TWI863012B - Binary cycle power generation system with chiller apparatus utilizing waste heat for cooling and power generation method thereof - Google Patents

Abstract

A binary cycle power generation system with chiller apparatus utilizing waste heat for cooling comprises a cycle power generation apparatus, a chiller apparatus, a cold circulation pipeline and a heat source pipeline. The cycle power generation apparatus comprises a condenser, a pump, a heat exchanger and a turbine generator connected in series by a circulation pipeline. A heat source fluid flows through a portion of the heat source pipeline in the heat exchanger such that a first fluid inside a portion of the circulation pipeline in the heat exchanger is vaporized. Then the first fluid drives the turbine generator for generating electricity power, and then the first fluid is delivered to a portion of the circulation pipeline in the condenser. A heat input portion of the chiller apparatus absorbs heat when the heat source fluid with waste heat flows through a portion of the heat source pipeline in the chiller apparatus, such that a second fluid inside a portion of the cold circulation pipeline in the chiller apparatus is cooled down by a chiller portion of the chiller apparatus. The second fluid flows through a portion of the cold circulation pipeline in the condenser such that the first fluid inside the portion of the circulation pipeline in the condenser is condensed into a liquid due to temperature decrease; thereby, a temperature difference of the first fluid before being input to the turbine generator and after being output from the turbine generator is increased, so as to improve the overall power generation efficiency of the power generation system.

Description

Binary cycle power generation system with refrigeration device utilizing waste heat for refrigeration and its power generation method

A binary cycle power generation system having a refrigeration device utilizing waste heat for refrigeration, in particular, a binary cycle power generation system utilizing waste heat of a heat exchanger as a source of energy for refrigeration of the refrigeration machine.

Please refer to FIG8 , which is a schematic diagram of a binary cycle power generation system of the prior art. A binary cycle power generation system 9 of the prior art includes: a power generation cycle device 90, a cooling tower 91, a cooling cycle pipeline 92 and a heat source pipeline 93. The power generation cycle device 90 includes: a condenser 94, a pump 95, a heat exchanger 96, a turbine generator 97 and a power generation cycle pipeline 98. The power generation cycle pipeline 98 includes: a condenser section 940, a pump section 950, a heat exchanger section 960 and a turbine section 970. The condenser section 940 is disposed in the condenser 94. The pump section 950 is disposed in the pump 95. The heat exchanger section 960 is disposed in the heat exchanger 96. The turbine section 970 is disposed in the turbo generator 97. An input end and an output end of the pump section 950 are respectively connected to an output end of the condenser section 940 and an input end of the heat exchanger section 960. An input end and an output end of the turbine section 970 are respectively connected to an output end of the heat exchanger section 960 and an input end of the condenser section 940. The cooling circulation pipeline 92 includes: a first cooling section 920 and a second cooling section 921. The first cooling section 920 is disposed in the cooling tower 91. The second cooling section 921 is disposed in the condenser 94. An input end and an output end of the first cooling section 920 are respectively connected to an output end and an input end of the second cooling section 921. The heat source pipeline 93 is arranged in the heat exchanger 96. An input end and an output end of the heat source pipeline 93 are respectively connected to a geothermal output well 930 and a geothermal injection well 931. The pump 95 pressurizes a circulating fluid in a liquid state in the pump section 950 of the power generation circulation pipeline 98 and outputs it to the heat exchanger section 960. The geothermal output well 930 inputs a high-temperature geothermal water into the heat source pipeline 93. In the heat exchanger 96, the circulating fluid in the heat exchanger section 960 absorbs part of the heat energy of the geothermal water in the heat source pipeline 93, so that the circulating fluid is converted into gaseous state (high temperature), and then output to the turbine section 970; after the geothermal water is partially absorbed by the circulating fluid, the remaining geothermal water is discharged into the geothermal injection well 931. The gaseous circulating fluid in the turbine section 970 drives the turbine generator 97 to generate electricity (the temperature of the gaseous circulating fluid is lowered after the electricity is generated), and then output to the condenser section 940. In the cooling tower 91, the cooling tower 91 cools a cooling water in the first cooling section 920, and then outputs the cooled cooling water to the second cooling section 921. In the condenser 94, the circulating fluid in the condenser section 940 is cooled by the cooling water in the second cooling section 921, so that the circulating fluid is condensed into liquid and then output to the pump section 950. After the cooling water cools the circulating fluid, the temperature of the cooling water is increased, and then the cooling water is transported back to the first cooling section 920 to be cooled by the cooling tower 91.

The conventional binary cycle power generation system 9 utilizes heat exchange in the heat exchanger 96 to absorb the heat of the high-temperature geothermal water; however, the remaining heat of the geothermal water is discharged into the geothermal injection well 931, which is not utilized in the conventional technology, thus wasting the excess heat of the geothermal water. In addition, the discharge of geothermal water above normal temperature into the geothermal injection well 931 will cause impact and damage to the environment. Furthermore, if the cooling tower 91 of the binary cycle power generation system 9 of the prior art adopts a normal temperature cooling method, the temperature of the cooling water cooled in the second cooling section 921 is approximately normal temperature, for example, 25°C to 35°C; in this way, the temperature difference between the circulating fluid before being input into the turbine section 970 and after being output from the turbine section 970 is too small, which will greatly reduce the power generation efficiency of the turbine generator 97. However, if the cooling tower 91 of the conventional binary cycle power generation system 9 adopts a compressor-type cooler, for example, to lower the temperature of the cooling water to a lower level in order to improve the power generation efficiency of the turbine generator 97, additional energy is still required to cool the cooling water in the second cooling section 921, and the cooling efficiency of the compressor-type cooler is not high. Therefore, all of the above factors will reduce the overall power generation efficiency of the conventional binary cycle power generation system 9.

In view of this, the inventor has developed a new design that can avoid the above-mentioned shortcomings and has the advantage of low cost, taking into account considerations such as flexibility of use and economy, thus resulting in the present invention.

The technical problem that the present invention aims to solve is how to provide a binary cycle power generation system that utilizes geothermal water to generate electricity and then utilizes the residual heat of the geothermal water as the energy required for cooling water, thereby increasing the temperature difference between the fluid before it is input into the turbine section and after it is output from the turbine section, thereby improving the overall power generation efficiency of the low-turbine generator.

In order to solve the above-mentioned problems and achieve the expected effect, the present invention provides a binary cycle power generation system with a refrigeration device that utilizes waste heat for refrigeration, including a power generation cycle device, a refrigeration device, a cold cycle pipeline and a heat source pipeline. The power generation cycle device includes a condenser, a pump, a heat exchanger, a turbine generator and a power generation cycle pipeline. The power generation cycle pipeline includes a condenser section arranged in the condenser, a pump section arranged in the pump, a heat exchanger section arranged in the heat exchanger and a turbine section arranged in the turbine generator. An input end and an output end of the pump section are respectively connected to an output end of the condenser section and an input end of the heat exchanger section. An input end and an output end of the turbine section are connected to an output end of the heat exchanger section and an input end of the condenser section, respectively. The refrigeration device includes a heat energy input section and a refrigeration section. The cold circulation pipeline includes a first cold exchange section arranged in the refrigeration section and a second cold exchange section arranged in the condenser. An input end and an output end of the second cold exchange section are connected to an output end and an input end of the first cold exchange section, respectively. The heat source pipeline includes a first heat exchange section arranged in the heat exchanger and a second heat exchange section arranged in the heat energy input section. An input end of the first heat exchange section is connected to a first heat source. An input end of the second heat exchange section is connected to an output end of the first heat exchange section. During operation, a first fluid in the condenser section is output to the pump section, and the pump pressurizes the first fluid and outputs it to the heat exchanger section. When a first heat source fluid of the first heat source flows into the first heat exchange section, the first fluid in the heat exchanger section absorbs heat, so that the first fluid becomes gaseous and then outputs it to the turbine section. The first fluid drives the turbine generator to generate electricity and then outputs it to the condenser section. The first heat source fluid with residual heat flows through the second heat exchanger section. The heat is absorbed by the heat energy input section during the cooling section to provide the heat energy required for cooling by the refrigeration device, so that the temperature of a second fluid in the first cold exchange section is reduced. The second fluid flows through the second cold exchange section to reduce the temperature of the first fluid in the condenser section and condense into a liquid state, thereby increasing the temperature difference between the first fluid before it is input into the turbine section and after it is output from the turbine section, thereby improving the overall power generation efficiency of the binary cycle power generation system of the present invention.

In addition, the present invention further provides a method for generating electricity in a binary cycle power generation system with a refrigeration device that utilizes waste heat for refrigeration, comprising the following steps: transporting a first heat source fluid of a first heat source to a heat exchanger of a power generation cycle device, so that a first fluid that is pressurized and transported to the heat exchanger by a pump of the power generation cycle device absorbs heat and becomes a gas; transporting the first fluid to a turbine generator of the power generation cycle device to drive the turbine generator to generate electricity, and then transporting the first fluid to a condenser of the power generation cycle device; transporting the first heat source fluid with residual heat to a heat exchanger of a first heat source device; The first heat source fluid is transported from the heat exchanger to a heat energy input part of a refrigeration device, and the heat energy input part absorbs the residual heat of the first heat source fluid to provide the heat energy required for refrigeration of the refrigeration device, so that a refrigeration part of the refrigeration device reduces the temperature of a second fluid; and the second fluid is transported to the condenser, so that the temperature of the first fluid transported from the turbine generator to the condenser is reduced and condensed into a liquid, thereby increasing the temperature difference between the first fluid before being input to the turbine generator and after being output from the turbine generator, so as to improve the overall power generation efficiency of the binary cycle power generation system.

In practice, the refrigeration device is an absorption refrigeration machine, the heat energy input part of the refrigeration device is a generator of the absorption refrigeration machine, and the refrigeration part of the refrigeration device is an evaporator of the absorption refrigeration machine.

In practice, the refrigeration device further includes an absorber, a refrigeration condenser and a cooling pipeline, wherein the cooling pipeline includes at least one of an absorber cooling section disposed in the absorber and a condenser cooling section disposed in the refrigeration condenser.

In practice, the refrigeration device is an adsorption refrigeration machine, the heat energy input part of the refrigeration device is a desorber of the adsorption refrigeration machine, and the refrigeration part of the refrigeration device is an evaporator of the adsorption refrigeration machine.

In practice, the refrigeration device further includes an adsorber, a refrigeration condenser, and a cooling line, wherein the cooling line includes at least one of a condenser cooling section disposed in the refrigeration condenser and an adsorber cooling section disposed in the adsorber.

In practice, the refrigeration device further includes a cooling water supply portion, and an input end and an output end of the cooling pipeline are respectively connected to the cooling water supply portion.

During implementation, the binary cycle power generation system further includes a cooling device, a first control valve and a second control valve. An input end of the first control valve is connected to the output end of the second cold exchange section. A first output end of the first control valve is connected to the input end of the first cold exchange section. A second output end of the first control valve is connected to an input end of the cooling device. A first input end of the second control valve is connected to an output end of the cooling device. A second input end of the second control valve is connected to the output end of the first cold exchange section. An output end of the second control valve is connected to the input end of the second cold exchange section. The first control valve is used to control the diversion ratio of the second fluid from the second cold exchange section to the first cold exchange section and the cooling device. The second control valve is used to control a merging ratio of the second fluid from the first cold exchange section and the cooling device to the second cold exchange section, wherein the diversion ratio is equal to the merging ratio. The cooling device is used to cool the second fluid.

During implementation, the heat source pipeline further includes a heat source control valve, which has a first input end, a second input end and an output end. The first input end is connected to the output end of the first heat exchange section, the second input end is connected to a second heat source, and the output end of the heat source control valve is connected to the input end of the second heat exchange section. The heat source control valve controls an input ratio of a first heat source fluid at the first input end and a second heat source fluid from the second heat source at the second input end to control a fluid output temperature at the output end of the heat source control valve to meet the temperature requirement of the refrigeration device.

In implementation, the second heat source is at least one of a geothermal heat source, a solar heat source, a fossil fuel heat source, a biofuel heat source, and an industrial waste heat source.

In implementation, the first heat source is at least one of a geothermal heat source, a solar heat source, a fossil fuel heat source, a biofuel heat source, and an industrial waste heat source.

In practice, an output end of the second heat exchange section is connected to at least one of a geothermal injection well and a wastewater treatment system.

In practice, the binary cycle power generation system further includes a cooling device and a condensation cooling section. The condensation cooling section is disposed in the condenser. An input end and an output end of the cooling device are respectively connected to an output end and an input end of the condensation cooling section. The cooling device is used to supply cooling water to the condensation cooling section to cool down the condenser.

In practice, the binary cycle power generation system further includes an air cooling device. The air cooling device cools down the condenser by air cooling.

In order to further understand the present invention, the following preferred embodiments are given, and the specific components and effects of the present invention are described in detail with reference to the drawings and figure numbers.

Please refer to Figure 1, which is a schematic diagram of a specific embodiment of a binary cycle power generation system with a refrigeration device that utilizes waste heat for refrigeration of the present invention. A binary cycle power generation system 1 with a refrigeration device that utilizes waste heat for refrigeration of the present invention includes: a power generation cycle device 2, a refrigeration device 3, a cold cycle pipeline 6 and a heat source pipeline 7. The power generation cycle device 2 includes: a condenser 20, a pump 21, a heat exchanger 22, a turbine generator 23 and a power generation cycle pipeline 5. The power generation cycle pipeline 5 includes: a condenser section 50, a pump section 51, a heat exchanger section 52 and a turbine section 53. The condenser section 50 is arranged in the condenser 20. The pump section 51 is disposed in the pump 21. The heat exchanger section 52 is disposed in the heat exchanger 22. The turbine section 53 is disposed in the turbogenerator 23. An input end 511 and an output end 512 of the pump section 51 are respectively connected to an output end 502 of the condenser section 50 and an input end 521 of the heat exchanger section 52. An input end 531 and an output end 532 of the turbine section 53 are respectively connected to an output end 522 of the heat exchanger section 52 and an input end 501 of the condenser section 50. The refrigeration device 3 is a refrigeration device that absorbs heat energy as refrigeration energy to achieve the refrigeration function. For more specific embodiments of the refrigeration device 3, please refer to an absorption refrigeration machine 39 in Figure 2 or an adsorption refrigeration machine 4 in Figures 3 and 4. The absorption refrigeration machine 39 in Figure 2 and the adsorption refrigeration machine 4 in Figures 3 and 4 both achieve the refrigeration function by absorbing heat energy. The refrigeration device 3 includes a heat energy input part 34 and a refrigeration part 35. The cold circulation pipeline 6 includes: a first cold exchange section 60 and a second cold exchange section 61. The first cold exchange section 60 is arranged in the refrigeration part 35 of the refrigeration device 3. The second cold exchange section 61 is arranged in the condenser 20 of the power generation cycle device 2. An input end 611 and an output end 612 of the second cold exchange section 61 are connected to an output end 602 and an input end 601 of the first cold exchange section 60, respectively. The heat source pipeline 7 includes: a first heat exchange section 70 and a second heat exchange section 71. The first heat exchange section 70 is arranged in the heat exchanger 22 of the power generation cycle device 2. The second heat exchange section 71 is arranged in the heat energy input part 34 of the refrigeration device 3. An input end 701 and an output end 702 of the first heat exchange section 70 are connected to a first heat source 72 and an input end 711 of the second heat exchange section 71, respectively. In this embodiment, the first heat source 72 is a geothermal output well, and an output end 712 of the second heat exchange section 71 is connected to a geothermal injection well 74 (or a wastewater treatment system). During operation, the condenser 20 outputs a first fluid (not shown in the figure) in a liquid state in the condenser section 50 of the power generation circulation pipeline 5 to the pump section 51. The pump 21 pressurizes the first fluid in the pump section 51 and outputs it to the heat exchanger section 52. The first heat source 72 (geothermal output well) inputs a high-temperature first heat source fluid (in this embodiment, the first heat source fluid is geothermal water, not shown in the figure) into the first heat exchange section 70 (set in the heat exchanger 22 of the power generation circulation device 2). In the heat exchanger 22, the high-pressure first fluid in the heat exchanger section 52 absorbs part of the heat energy of the first heat source fluid (geothermal water) in the first heat exchange section 70, so that the first fluid is converted into a gaseous state (high temperature), and then the gaseous first fluid is output to the turbine section 53. After the first heat source fluid absorbs part of the heat energy by the first fluid, the first heat source fluid with the remaining heat is output to the second heat exchange section 71 (set in the heat energy input part 34 of the refrigeration device 3). After the high-temperature gaseous first fluid in the turbine section 53 drives the turbine generator 23 to generate electricity (after generating electricity, the temperature of the first fluid is reduced), the first fluid is output to the condenser section 50. In the refrigeration device 3, the first heat source fluid with residual heat in the second heat exchange section 71 (from the first heat source fluid with residual heat in the first heat exchange section 70) absorbs the residual heat of the first heat source fluid by the heat energy input part 34 of the refrigeration device 3. The refrigeration device 3 uses the residual heat of the first heat source fluid absorbed by the heat energy input part 34 as the energy for refrigeration of the refrigeration device 3, so that the refrigeration of the refrigeration device 3 is The cooling device 3 uses the residual heat output by the first heat exchange section 70 to cool down the second fluid (not shown in the figure) in the first cold exchange section 60 (set in the cooling part 35 of the cooling device 3), and then outputs the cooled second fluid to the second cold exchange section 61 (set in the condenser 20). After the residual heat of the first heat source fluid is absorbed by the heat energy input section 34 of the cooling device 3, the temperature of the first heat source fluid is further reduced, and finally output from the output end 712 of the second heat exchange section 71 to the geothermal injection well 74. In the condenser 20, the first fluid after driving the turbine generator 23 to generate electricity is output to the condenser section 50, and the first fluid in the condenser section 50 is cooled by the second fluid in the second cold exchange section 61 (disposed in the condenser 20), so that the first fluid in the condenser section 50 is condensed into a liquid state, and then the first fluid is output to the pump section 51. After the second fluid in the second cold exchange section 61 cools the first fluid in the condenser section 50, the temperature of the second fluid in the second cold exchange section 61 is increased, and then the second fluid in the second cold exchange section 61 is transported to the first cold exchange section 60 to be cooled by the refrigeration part 35 of the refrigeration device 3. The binary cycle power generation system 1 of the refrigeration device utilizing waste heat for refrigeration of the present invention utilizes the absorption refrigeration machine 39 or the adsorption refrigeration machine 4, which has the function of refrigeration by absorbing heat energy, and inputs the first heat source fluid with waste heat after passing through the heat exchanger 22 into the refrigeration device 3, so that the heat energy input part 34 of the refrigeration device 3 absorbs the first heat source fluid. The waste heat of the first fluid is used to provide the energy required for refrigeration in the refrigeration section 35 of the refrigeration device 3, so as to cool the second fluid in the first cold exchange section 60 (installed in the refrigeration section 35 of the refrigeration device 3) and to transfer it to the second cold exchange section 61 (installed in the condenser 20), so as to cool the first fluid in the condenser section 50 (installed in the condenser 20), and condense the first fluid in the condenser section 50 into a liquid state. In this way, the temperature difference between the temperature of the first fluid before being input into the turbine section 53 and the temperature of the first fluid after being output from the turbine section 53 is increased, so as to improve the overall power generation efficiency of the binary cycle power generation system 1 having a refrigeration device that uses waste heat for refrigeration. Compared to the binary cycle power generation system of the prior art, the binary cycle power generation system 1 of the present invention with a refrigeration device utilizing waste heat for refrigeration reuses the waste heat of the first heat source fluid (from the first heat source fluid with waste heat remaining in the first heat exchange section 70) after passing through the heat exchanger 22, saving the additional energy required to cool the second fluid. In addition, the refrigeration efficiency of the absorption refrigeration machine 39 or the adsorption refrigeration machine 4 is much higher than that of the general compressor type refrigeration machine, that is, the absorption refrigeration machine 39 or the adsorption refrigeration machine 4 saves more energy (or can be reduced to a lower temperature) when refrigerating, thereby increasing the aforementioned temperature difference before and after, so as to improve the overall power generation efficiency. In addition, the temperature of the first heat source fluid discharged into the geothermal injection well 74 is slightly reduced to about room temperature, which can reduce the impact and damage to the environment. Furthermore, the absorption chiller 39 or the adsorption chiller 4 does not need to use refrigerants such as chlorofluorocarbons (CFC), hydrochlorofluorocarbons (HCFC), or hydrofluorocarbons (HFC) that damage the environment, so it is very friendly to the environment. Therefore, the binary cycle power generation system of the present invention with a refrigeration device that utilizes waste heat for refrigeration can indeed utilize the waste heat of the first heat source fluid (geothermal water) as the energy required to cool the cooling water after utilizing the first heat source fluid (geothermal water) to cool the condenser, thereby increasing the temperature difference between the first heat source fluid (geothermal water) before it is input into the turbine section and after it is output from the turbine section, thereby improving the overall power generation efficiency of the low-turbine generator.

The present invention further provides a method for generating electricity in a binary cycle power generation system 1 having a refrigeration device for utilizing waste heat for refrigeration, comprising the following steps: transporting a first heat source fluid (not shown in the figure) of a first heat source 72 to a heat exchanger 22 of a power generation cycle device 2 (i.e., transporting to a first heat exchange section 70 of a heat source pipeline 7 disposed in the heat exchanger 22) for a first fluid (not shown in the figure) pressurized and transported to the heat exchanger 22 by a pump 21 of the power generation cycle device 2 (i.e., transported from a pump section 51 of a power generation cycle pipeline 5 disposed in the pump 21 to a heat exchanger section 52 of a power generation cycle pipeline 5 disposed in the heat exchanger 22) to absorb heat and become a gas; transporting the first fluid from the heat exchanger 22 to the power generation cycle device 2; The first fluid is then transported from the turbine generator 23 to a condenser 20 of the power generation cycle device 2 (i.e., from the heat exchanger section 52 disposed in the heat exchanger 22 to a turbine section 53 of the power generation cycle pipeline 5 disposed in the turbine generator 23) to drive the turbine generator 23 to generate electricity, and then the first fluid is transported from the turbine generator 23 to a condenser 20 of the power generation cycle device 2 (i.e., from the turbine generator The first heat source fluid with residual heat is transported from the heat exchanger 22 to a heat energy input part 34 of a refrigeration device 3 (that is, from the first heat exchange section 70 disposed in the heat exchanger 22 to the heat source pipeline 7 disposed in the heat energy input part 34). The heat energy input section 34 absorbs the surplus heat of the first heat source fluid (the first heat source fluid in the second heat exchange section 71) to provide the heat energy required for refrigeration of the refrigeration device 3, so that the refrigeration section 35 of the refrigeration device 3 reduces the temperature of a second fluid (not shown in the figure) (that is, the temperature of the second fluid in a first cold exchange section 60 of a cold circulation pipeline 6 arranged in the refrigeration section 35 is reduced); and the second fluid is transported from the refrigeration section 35 to the condenser 20 (that is, from the first cold exchange section 60 arranged in the refrigeration section 35 to the second cold exchange section 61 of the cold circulation pipeline 6 arranged in the condenser 20), so that the temperature of the first fluid transported from the turbine generator 23 to the condenser 20 is reduced. After condensing into liquid, the first fluid is transported from the condenser 20 to the pump 21 (that is, from the condenser section 50 disposed in the condenser 20 to the pump section 51 disposed in the pump 21), and the second fluid is transported from the condenser 20 to the refrigeration section 35 (that is, from the second cold exchange section 61 disposed in the condenser 20 to the first cold exchange section 60 disposed in the refrigeration section 35), thereby increasing the temperature difference before and after the first fluid is input into the turbine generator 23 and after it is output from the turbine generator 23 (that is, before it is input into the turbine section 53 disposed in the turbine generator 23 and after it is output from the turbine section 53 disposed in the turbine generator 23), so as to improve the overall power generation efficiency of the binary cycle power generation system 1.

The binary cycle power generation system of the present invention can be a Rankine cycle power generation system, a supercritical cycle power generation system or a hybrid supercritical cycle power generation system.

In some embodiments, the output end 612 of the second cold exchange section 61 is not connected to the input end 601 of the first cold exchange section 60.

Please refer to FIG. 1 and FIG. 2, wherein FIG. 2 is a schematic diagram of a specific embodiment of the refrigeration device of FIG. 1. In the embodiment of FIG. 2, the refrigeration device 3 is an absorption refrigeration machine 39. The refrigeration device 3 includes: a generator 30 (i.e., the heat input part 34 of the refrigeration device 3), an evaporator 31 (i.e., the refrigeration part 35 of the refrigeration device 3), a refrigeration condenser 32, an absorber 33, a heat exchanger 36, a cooling pipeline 8 and a vacuum pump (not shown in the figure). The second heat exchange section 71 is arranged in the heat input part 34 of the refrigeration device 3 (i.e., arranged in the generator 30 of the refrigeration device 3). The first cold exchange section 60 is arranged in the refrigeration part 35 of the refrigeration device 3 (i.e., arranged in the evaporator 31 of the refrigeration device 3). The vacuum pump is used to maintain the generator 30, the evaporator 31, the refrigeration condenser 32 and the absorber 33 at a certain degree of vacuum (for example, about 6 mmHg). The cooling line 8 includes: a condenser cooling section 80 and an absorber cooling section 81. The condenser cooling section 80 is arranged in the refrigeration condenser 32. The absorber cooling section 81 is arranged in the absorber 33. An output end of the absorber cooling section 81 is connected to an input end of the condenser cooling section 80. A cooling water is input from an input end 841 of the absorber cooling section 81, first flows through the absorber cooling section 81, then flows through the condenser cooling section 80, and then outputs from an output end 842 of the condenser cooling section 80. As is known to all, the boiling temperature of water under a standard atmospheric pressure is 100°C, that is, at 100°C under atmospheric pressure, water will evaporate in large quantities, and this process will absorb a large amount of heat. However, when the atmospheric pressure is about 6 mmHg, water will boil at about 4°C, that is, at about 6 mmHg and about 4°C, water will also evaporate in large quantities, and this process will also absorb a large amount of heat. In this embodiment, the boiling point of water is lower than the boiling point of lithium bromide solution, so the refrigeration device 3 uses water as a refrigerant (i.e., a refrigerant), and lithium bromide solution (a mixed solution of lithium bromide and water) as an absorbent, and uses the property that water and lithium bromide solution are easily mixed together to allow water to evaporate and condense in a vacuum space (e.g., about 6 mmHg). At the bottom of an absorber 33 of the refrigeration device 3 is a lithium bromide solution 37 (absorbent) with a relatively low concentration, which is pressurized and pumped out by a pump 333, flows through a pipeline 336, passes through a heat exchanger 36, and is then transported to a spraying section 302 of the generator 30 through a pipeline 360. The spraying section 302 of the generator 30 sprays the lithium bromide solution 37 with a relatively low concentration on the second heat exchange section 71. Since the temperature of the first heat source fluid (e.g., geothermal water) with residual heat in the second heat exchange section 71 of the generator 30 (i.e., the heat energy input section 34 of the refrigeration device 3) is relatively high (e.g., above 85°C), the water in the lithium bromide solution 37 with a relatively low concentration sprayed on the second heat exchange section 71 easily absorbs the residual heat of the first heat source fluid (e.g., geothermal water) and evaporates, so a lithium bromide solution 370 (absorbent) with a relatively high concentration is formed at the bottom of the generator 30. After the water vapor enters the refrigeration condenser 32, the water vapor condenses into liquid water 38 (refrigerant) in the refrigeration condenser 32 due to the cooling of the cooling water flowing through the cooling section 80 of the condenser. The liquid water 38 flows downward through a pipeline 321 into the evaporator 31. The liquid water 38 at the bottom of the evaporator 31 is then pressurized by a pump 313 and transported to a spraying portion 312 of the evaporator 31, so that the liquid water 38 is sprayed on the first cold exchange section 60, so that the liquid water 38 absorbs the heat of the second fluid in the first cold exchange section 60, thereby evaporating the liquid water 38 and cooling the second fluid in the first cold exchange section 60. The evaporated water vapor enters the absorber 33. The lithium bromide solution 370 with a higher concentration (higher temperature) at the bottom of the generator 30 is pressurized and transported through a pipeline 306 and a pump 303, first flows through a heat exchanger 36, and then is transported to a spraying portion 332 of the absorber 33 through a pipeline 363, so that the spraying portion 332 sprays the lithium bromide solution 370 with a higher concentration on the cooling section 81 of the absorber. Since the lithium bromide solution has a strong absorption capacity, the lithium bromide solution 370 with a higher concentration can effectively absorb the water vapor entering the absorber 33 from the evaporator 31, and the cooling effect of the cooling section 81 of the absorber, thereby forming a lithium bromide solution 37 with a lower concentration at the bottom of the absorber 33.

The absorption chiller 39 in FIG. 2 is only a schematic diagram of one type of absorption chiller, which does not limit the type or structure of the absorption chiller. The refrigeration device 3 in FIG. 1 can be not only the absorption chiller 39 in FIG. 2, but also an absorption chiller of other types or structures. In some embodiments, the refrigeration device 3 in FIG. 1 is other types of single-effect absorption chillers (Single-effect absorption chiller). In other embodiments, the refrigeration device 3 in FIG. 1 is a double-effect absorption chiller (Doubleeffect absorption chiller). In some other embodiments, the refrigeration device 3 in FIG. 1 is a water spray absorption chiller or a single-pressure absorption chiller.

In some embodiments, the output end of the absorber cooling section 81 is connected to the input end of the condenser cooling section 80. The output end 842 of the condenser cooling section 80 and the input end 841 of the absorber cooling section 81 are respectively connected to an input end and an output end of a cooling water supply (not shown in the figure). In other embodiments, the output end 842 of the condenser cooling section 80 and the output end of the absorber cooling section 81 are respectively connected to the input end of the cooling water supply (not shown in the figure); the input end of the condenser cooling section 80 and the input end 841 of the absorber cooling section 81 are respectively connected to the output end of the cooling water supply (not shown in the figure).

In some embodiments, the refrigeration device 3 uses water as a refrigerant (i.e., a refrigerant) and one of lithium chloride, lithium iodide, and calcium chloride as an absorbent. In some embodiments, the refrigeration device 3 uses methanol as a refrigerant (i.e., a refrigerant) and lithium bromide or zinc bromide as an absorbent. In some embodiments, the refrigeration device 3 uses methanol as a refrigerant (i.e., a refrigerant) and lithium bromide and zinc bromide as an absorbent.

In some embodiments, the refrigeration device 3 uses one of ammonia, methylamine and ethylamine as a refrigerant (ie, a coolant) and water as an absorbent.

Please refer to FIG. 1, FIG. 3 and FIG. 4 simultaneously, wherein FIG. 3 and FIG. 4 are schematic diagrams of the first phase and the second phase of another specific embodiment of the refrigeration device of FIG. 1, respectively. In the embodiments of FIG. 3 and FIG. 4, the refrigeration device 3 is an adsorption refrigeration machine 4. The refrigeration device 3 includes: a first adsorber/desorber 40, an evaporator 41 (i.e., the refrigeration part 35 of the refrigeration device 3), a refrigeration condenser 42, a second adsorber/desorber 43, two switching valves 44, 45, a pump 46, a cooling line 8 and a vacuum pump (not shown in the figure). The vacuum pump is used to maintain the first adsorber/desorber 40, the evaporator 41, the refrigeration condenser 42 and the second adsorber/desorber 43 at a certain degree of vacuum (e.g., about 6 mmHg). The first cold exchange section 60 is disposed in the refrigeration part 35 of the refrigeration device 3 (that is, disposed in the evaporator 41 of the refrigeration device 3). The cooling line 8 includes a condenser cooling section 82 and an adsorber cooling section 83. The condenser cooling section 82 is disposed in the refrigeration condenser 42. The condenser cooling section 82 and the adsorber cooling section 83 may be connected to a cooling water supply unit (not shown in the figure) in a series or parallel manner; in the series manner, for example, an input end 851 of the condenser cooling section 82 is connected to an output end 862 of the adsorber cooling section 83, and an output end 852 of the condenser cooling section 82 and an input end 861 of the adsorber cooling section 83 are respectively connected to the cooling water supply unit (not shown in the figure). The condenser cooling section 82 and the adsorber cooling section 83 are connected to an input terminal and an output terminal thereof (not shown); wherein the parallel connection is such that, for example, the output terminal 852 of the condenser cooling section 82 and the output terminal 862 of the adsorber cooling section 83 are respectively connected to the input terminal of the cooling water supply section (not shown in the figure); and the input terminal 851 of the condenser cooling section 82 and the input terminal 861 of the adsorber cooling section 83 are respectively connected to the output terminal of the cooling water supply section (not shown in the figure). In this embodiment, the refrigeration device 3 uses water as a refrigerant (i.e., a refrigerant) and silica gel as an adsorbent, and utilizes water to evaporate, condense, adsorb to silica gel (adsorbent), and desorb from silica gel (adsorbent) in a vacuum space (e.g., about 6 mmHg). The embodiment of FIG. 3 is the first phase of the adsorption refrigeration machine 4, the first adsorption/desorption device 40 is used as a desorption device (i.e., the heat energy input part 34 of the refrigeration device 3), and a pipeline disposed in the first adsorption/desorption device 40 is used as the second heat exchange section 71 of the heat source pipeline 7; and the second adsorption/desorption device 43 is used as an adsorber, and a pipeline disposed in the second adsorption/desorption device 43 is used as the adsorber cooling section 83 of the cooling pipeline 8. The embodiment of Figure 4 is the second phase of the adsorption refrigeration machine 4, wherein the first adsorption/desorption device 40 serves as an adsorber, and the pipeline arranged in the first adsorption/desorption device 40 serves as the adsorber cooling section 83 of the cooling pipeline 8; and the second adsorption/desorption device 43 serves as a desorption device (that is, the heat energy input part 34 of the refrigeration device 3), and the pipeline arranged in the second adsorption/desorption device 43 serves as the second heat exchange section 71 of the heat source pipeline 7.

In the embodiment of FIG. 3 , the first adsorber/desorber 40 is used as a desorber (i.e., the heat input unit 34 of the refrigeration device 3 ). A silica gel 48 (adsorbent) in the first adsorber/desorber 40 as a desorber originally adsorbs water (refrigerant, i.e., refrigerant). The pipeline arranged in the first adsorption/desorption device 40 is the second heat exchange section 71 of the heat source pipeline 7. The input end 711 of the second heat exchange section 71 is connected to the output end 702 of the first heat exchange section 70, so that the first heat source fluid (such as geothermal water) with residual heat flows to the second heat exchange section 71. The residual heat of the first heat source fluid (geothermal water) causes the water adsorbed by the silicone 48 in the first adsorption/desorption device 40 serving as a desorption device to begin to evaporate (the first heat source fluid (geothermal water) then flows into the geothermal injection well 74 (or wastewater treatment system) through the output end 712). At this time, a valve 402 is opened to allow water vapor to enter the refrigeration condenser 42. After the water vapor enters the refrigeration condenser 42, the cooling water in the condenser cooling section 82 cools the water vapor, and forms liquid water 47 at the bottom of the refrigeration condenser 42. The liquid water 47 at the bottom of the evaporator 41 is transported upward through a pipeline 411 and a pump 46 under pressure, and is combined with the liquid water 47 flowing downward from the bottom of the refrigeration condenser 42 through a pipeline 421, and transported to a spraying portion 412 of the evaporator 41, so that the liquid water 47 is sprayed on the first cold exchange section 60, so that the liquid water 47 absorbs the heat of the second fluid in the first cold exchange section 60, and the liquid water 47 evaporates, and the second fluid in the first cold exchange section 60 is cooled. At this time, a valve 413 is opened to allow water vapor to enter the second adsorber/desorber 43 as an adsorber. The silicone 48 in the second adsorber/desorber 43 as an adsorber does not originally adsorb water. After the water vapor enters the second adsorber/desorber 43 as an adsorber, the cooling water in the adsorber cooling section 83 cools the silicone 48 in the second adsorber/desorber 43 as an adsorber, causing the water vapor to begin to condense, so that the silicone 48 in the second adsorber/desorber 43 as an adsorber adsorbs water. When the silica gel 48 in the second adsorber/desorber 43 as an adsorber has reached a saturated state of adsorbed water and cannot continue to adsorb more water, the two switching valves 44, 45 can be switched respectively to the state shown in FIG. 4, so that the adsorption refrigeration machine 4 switches to the second phase.

In the embodiment of Fig. 4, the second adsorber/desorber 43 is used as a desorber (i.e., the heat input part 34 of the refrigeration device 3). A silica gel 48 in the second adsorber/desorber 43 as a desorber originally adsorbs water (saturated adsorption). The pipeline arranged in the second adsorption/desorption device 43 is the second heat exchange section 71 of the heat source pipeline 7. The input end 711 of the second heat exchange section 71 is connected to the output end 702 of the first heat exchange section 70, so that the first heat source fluid (such as geothermal water) with residual heat flows to the second heat exchange section 71. The residual heat of the first heat source fluid (geothermal water) causes the water adsorbed by the silicone 48 in the second adsorption/desorption device 43 serving as a desorber to begin to evaporate (the first heat source fluid (geothermal water) then flows into the geothermal injection well 74 (or wastewater treatment system) through the output end 712). At this time, a valve 432 is opened to allow water vapor to enter the refrigeration condenser 42. After the water vapor enters the refrigeration condenser 42, the cooling water in the condenser cooling section 82 cools the water vapor, and forms liquid water 47 at the bottom of the refrigeration condenser 42. The liquid water 47 at the bottom of the evaporator 41 is transported upward through a pipeline 411 and a pump 46 under pressure, and is combined with the liquid water 47 flowing downward from the bottom of the refrigeration condenser 42 through a pipeline 421, and transported to a spraying portion 412 of the evaporator 41, so that the liquid water 47 is sprayed on the first cold exchange section 60, so that the liquid water 47 absorbs the heat of the second fluid in the first cold exchange section 60, and the liquid water 47 evaporates, and the second fluid in the first cold exchange section 60 is cooled. At this time, a valve 410 is opened to allow water vapor to enter the first adsorber/desorber 40 as an adsorber. The silicone 48 in the first adsorber/desorber 40 as an adsorber does not originally adsorb water. After the water vapor enters the first adsorber/desorber 40 as an adsorber, the cooling water in the adsorber cooling section 83 cools the silicone 48 in the first adsorber/desorber 40 as an adsorber, causing the water vapor to begin to condense, so that the silicone 48 in the first adsorber/desorber 40 as an adsorber adsorbs water. When the silica gel 48 in the first adsorber/desorber 40 as an adsorber has reached a saturated state of adsorbed water and cannot continue to adsorb more water, the two switching valves 44, 45 can be switched respectively to the state shown in FIG. 3, so that the adsorption refrigeration machine 4 is switched to the first phase.

The adsorption refrigeration machine 4 in FIG. 3 and FIG. 4 is only a schematic diagram of one type of adsorption refrigeration machine, which does not limit the type or structure of the adsorption refrigeration machine. The refrigeration device 3 in FIG. 1 can be an adsorption refrigeration machine 4 in FIG. 3 and FIG. 4, or an adsorption refrigeration machine of other types or structures.

In some embodiments, the refrigeration device 3 uses water as a refrigerant (ie, a coolant) and zeolite as an adsorbent.

Please refer to Figure 5, which is a schematic diagram of another specific embodiment of a binary cycle power generation system of the present invention having a refrigeration device that utilizes waste heat for refrigeration. The main structure of the embodiment of Figure 5 is roughly the same as the structure of the embodiment of Figure 1, but it further includes a heat source control valve 75. The heat source control valve 75 has a first input end 750, a second input end 751 and an output end 752. The first input end 750 of the heat source control valve 75 is connected to the output end 702 of the first heat exchange section 70. The second input end 751 of the heat source control valve 75 is connected to a second heat source 73. The output end 752 of the heat source control valve 75 is connected to the input end 711 of the second heat exchange section 71. The first heat source fluid (e.g. geothermal water) with residual heat is inputted from the first input end 750; the second heat source fluid flowing in from the second heat source 73 is inputted from the second input end 751; and the mixed fluid of the first heat source fluid (geothermal water) with residual heat and the second heat source fluid flowing in from the second heat source 73 is outputted from the output end 752. The heat source control valve 75 controls the input ratio of the first heat source fluid (geothermal water) at the first input end 750 and the second heat source fluid from the second heat source 73 at the second input end 751 to control the fluid output temperature at the output end 752 of the heat source control valve 75 to meet the temperature requirement of the absorption chiller 39 or the adsorption chiller 4.

Please refer to Figure 6, which is a schematic diagram of another specific embodiment of a binary cycle power generation system of the present invention having a refrigeration device that utilizes waste heat for refrigeration. The main structure of the embodiment of Figure 6 is roughly the same as the structure of the embodiment of Figure 1, but it further includes a cooling device 76, a first control valve 77 and a second control valve 78. The cooling device 76 has an input end 761 and an output end 762. The first control valve 77 has an input end 770, a first output end 771 and a second output end 772. The second control valve 78 has a first input end 780, a second input end 781 and an output end 782. The input end 770 of the first control valve 77 is connected to the output end 612 of the second cold exchange section 61. The first output end 771 of the first control valve 77 is connected to the input end 601 of the first cold exchange section 60. The second output end 772 of the first control valve 77 is connected to the input end 761 of the cooling device 76. The first input end 780 of the second control valve 78 is connected to the output end 762 of the cooling device 76. The second input end 781 of the second control valve 78 is connected to the output end 602 of the first cold exchange section 60. The output end 782 of the second control valve 78 is connected to the input end 611 of the second cold exchange section 61. The first control valve 77 is used to control a diversion ratio of the second fluid from the second cold exchange section 61 to the first cold exchange section 60 and the cooling device 76. The second control valve 78 is used to control the confluence ratio of the second fluid from the first cold exchange section 60 and the cooling device 76 to the second cold exchange section 61, wherein the diversion ratio is approximately equal to the confluence ratio. The cooling device 76 is used to cool the second fluid. When the first control valve 77 is controlled to make the second fluid flow completely from the second cold exchange section 61 to the first cold exchange section 60, and the second control valve 78 is controlled to make the second fluid flow completely from the first cold exchange section 60 to the second cold exchange section 61 without allowing the second fluid to flow through the cooling device 76, at this time, the embodiment of Figure 6 (the same as the embodiment of Figure 1) relies on the refrigeration device 3 (first cold exchange section 60) to make the second fluid to reduce the temperature of the condenser 20 (second cold exchange section 61). However, in some situations (for example, the temperature of the first heat source fluid (such as geothermal water) of the first heat source 72 is not high enough, or the temperature of the cooling water in the cooling pipeline 8 of the refrigeration device 3 is not low enough), when the refrigeration capacity of the refrigeration device 3 is insufficient, the first control valve 77 and the second control valve 78 can be controlled separately to control the diversion ratio and the confluence ratio, so that part of the second fluid flows through the cooling device 76, allowing the cooling device 76 to cool down part of the second fluid to assist the insufficient cooling of the refrigeration device 3.

In some embodiments, the second fluid may be water.

Please refer to FIG. 7, which is a schematic diagram of another specific embodiment of a binary cycle power generation system with a refrigeration device that utilizes waste heat for refrigeration according to the present invention. The main structure of the embodiment of FIG. 7 is substantially the same as the structure of the embodiment of FIG. 1, but it further includes a cooling device 76 and a condensing cooling section 79. The condensing cooling section 79 is disposed in the condenser 20. An input end 761 and an output end 762 of the cooling device 76 are respectively connected to an output end 792 and an input end 791 of the condensing cooling section 79. The cooling device 76 is used to supply, for example, cooling water. In some cases (for example, the temperature of the first heat source fluid (such as geothermal water) of the first heat source 72 is not high enough, or the temperature of the cooling water in the cooling pipeline 8 of the refrigeration device 3 is not low enough), when the refrigeration capacity of the refrigeration device 3 is insufficient, the cooling device 76 can be used to provide cooling water to assist the condenser 20 in cooling down.

In addition, in some embodiments, the binary cycle power generation system 1 with a refrigeration device utilizing waste heat for refrigeration of the present invention further includes an air cooling device (not shown in the figure). The air cooling device can be an electric fan, an industrial fan or other equipment that can cool down by air cooling. The air cooling device can be installed beside the condenser 20 or directly installed in the condenser 20, and directly blow air to the condenser 20 to assist in lowering the temperature of the condenser 20 (the second cold exchange section 61).

The above are specific embodiments of the present invention and the technical means used. Many changes and modifications can be derived based on the disclosure or teaching of this article, which can still be regarded as equivalent changes made to the concept of the present invention. The effects produced still do not exceed the essential spirit covered by the description and drawings, and should be regarded as within the technical scope of the present invention.

In summary, according to the contents disclosed above, the present invention can achieve the expected purpose of the invention, and provide a binary cycle power generation system and a power generation method thereof having a refrigeration device that utilizes waste heat for refrigeration, which can utilize the waste heat of the first heat source fluid (geothermal water) to generate electricity, and then utilize the waste heat of the first heat source fluid (geothermal water) as the energy required for cooling the water, and can increase the temperature difference between the first heat source fluid (geothermal water) before it is input into the turbine section and after it is output from the turbine section, so as to improve the overall power generation efficiency of the low-turbine generator, and has great value for industrial use, and therefore a patent application for the invention is filed in accordance with the law.

1: Binary cycle power generation system with refrigeration device using waste heat for refrigeration 2: Power generation cycle device 20: Condenser 21: Pump 22: Heat exchanger 23: Turbogenerator 3: Refrigeration device 30: Generator 302: Sprinkler 303: Pump 306: Pipeline 31: Evaporator 312: Sprinkler 313: Pump 32: Refrigeration condenser 321: Pipeline 33: Absorber 332: Sprinkler 333: Pump 336: Pipeline 34: Heat input unit 35: Refrigeration unit 36: Heat exchanger 360: Pipeline 363: Pipeline 37: Lithium bromide solution with lower concentration 370: Lithium bromide solution with higher concentration 38: Liquid water 39: Absorption refrigeration machine 4: Adsorption refrigeration machine 40: First adsorption/desorption unit 402: Valve 41: Evaporator 410: Valve 411: Pipeline 412: Spraying unit 413: Valve 42: Refrigeration condenser 421: Pipeline 43: Second adsorption/desorption unit 432: Valve 44: Switch valve 45: Switch valve 46: Pump 47: Liquid water 48: Silicone 5: Power generation circulation pipeline 50: Condenser section 501: Input end of condenser section 502: Output end of condenser section 51: Pump section 511: Input end of pump section 512: Output end of pump section 52: Heat exchanger section 521: Input end of heat exchanger section 522: Output end of heat exchanger section 53: Turbine section 531: Input end of turbine section 532: Output end of turbine section 6: Cold circulation pipeline 60: First cold exchange section 601: Input end of first cold exchange section 602: Output end of the first cold exchange section 61: Second cold exchange section 611: Input end of the second cold exchange section 612: Output end of the second cold exchange section 7: Heat source pipeline 70: First heat exchange section 701: Input end of the first heat exchange section 702: Output end of the first heat exchange section 71: Second heat exchange section 711: Input end of the second heat exchange section 712: Output end of the second heat exchange section 72: First heat source 73: Second heat source 74: Geothermal injection well 75: Heat source control valve 750: First input end of heat source control valve 751: Second input end of heat source control valve 752: Output end of heat source control valve 76: Cooling device 761: Input end of cooling device 762: Output end of cooling device 77: First control valve 770: Input end of first control valve 771: First output end of first control valve 772: Second output end of first control valve 78: Second control valve 780: First input end of second control valve 781: Second input end of second control valve 782: Output end of second control valve 79: Condensation cooling section 791: Input end of condensation cooling section 792: Output end of condensation cooling section 8: Cooling pipeline 80: Condenser cooling section 81: Absorber cooling section 82: Condenser cooling section 83: Adsorber cooling section 841: Input end of absorber cooling section 842: Output end of condenser cooling section 851: Input end of condenser cooling section 852: Output end of condenser cooling section 861: Input end of adsorber cooling section 862: Output end of adsorber cooling section 9: Binary cycle power generation system 90: Power generation cycle device 91: Cooling tower 92: Cooling cycle pipeline 920: First cooling section 921: Second cooling section 93: Heat source pipeline 930: Geothermal output well 931: Geothermal injection well 94: Condenser 940: Condenser section 95: Pump 950: Pump section 96: Heat exchanger 960: Heat exchanger section 97: Turbine generator 970: Turbine section 98: Power generation circulation pipeline

[Figure 1] is a schematic diagram of a specific embodiment of a binary cycle power generation system having a refrigeration device using waste heat for refrigeration of the present invention. [Figure 2] is a schematic diagram of a specific embodiment of the refrigeration device of Figure 1. [Figure 3] is a schematic diagram of the first phase of another specific embodiment of the refrigeration device of Figure 1. [Figure 4] is a schematic diagram of the second phase of the refrigeration device of Figure 3. [Figure 5] is a schematic diagram of another specific embodiment of a binary cycle power generation system having a refrigeration device using waste heat for refrigeration of the present invention. [Figure 6] is a schematic diagram of yet another specific embodiment of a binary cycle power generation system having a refrigeration device using waste heat for refrigeration of the present invention. [Figure 7] is a schematic diagram of another specific embodiment of a binary cycle power generation system of the present invention having a refrigeration device that utilizes waste heat for refrigeration. [Figure 8] is a schematic diagram of a binary cycle power generation system of the prior art.

1: A binary cycle power generation system with a refrigeration device that utilizes waste heat for refrigeration

2: Power generation cycle device

20: Condenser

21: Pump

22: Heat exchanger

23: Turbogenerator

3: Refrigeration equipment

34: Heat input unit

35: Refrigeration Department

5: Power generation circulation pipeline

50: Condenser section

501: Input end of condenser section

502: Output end of condenser section

51: Pump section

511: Input end of pump section

512: Output end of pump section

52: Heat exchanger section

521: Input end of heat exchanger section

522: Output end of heat exchanger section

53: Turbine section

531: Input end of turbine section

532: Output terminal of turbine section

6: Cold circulation pipeline

60: First cold exchange section

601: Input end of the first cold exchange section

602: Output end of the first cold exchange section

61: Second cold exchange section

611: Input end of the second cold exchange section

612: Output end of the second cold exchange section

7: Heat source pipeline

70: First heat exchange section

701: Input end of the first heat exchange section

702: Output end of the first heat exchange section

71: Second heat exchange section

711: Input end of the second heat exchange section

712: Output end of the second heat exchange section

72: The first heat source

74: Geothermal injection well

Claims (10)

A binary cycle power generation system with a refrigeration device utilizing waste heat for refrigeration, comprising: a power generation cycle device, comprising: a condenser; a pump; a heat exchanger; a turbine generator; and a power generation cycle pipeline, comprising: a condenser section, which is arranged in the condenser; a pump section, which is arranged in the pump, an input end of the pump section is connected to an output end of the condenser section; a heat exchanger section, which is arranged in the heat exchanger, an input end of the heat exchanger section is connected to an output end of the pump section; and a turbine section, which is arranged in the turbine generator, an input end and an output end of the turbine section are connected to an output end of the heat exchanger section and the output end of the turbine section, respectively. A refrigeration device, wherein the refrigeration device is one of an absorption refrigeration machine and an adsorption refrigeration machine, the refrigeration device comprising: a heat energy input section; and a refrigeration section; a cold circulation pipeline, comprising: a first cold exchange section, which is arranged in the refrigeration section of the refrigeration device; and a second cold exchange section, which is arranged in the condenser of the power generation cycle device, an input end and an output end of the second cold exchange section are respectively connected to an output end and an input end of the first cold exchange section; and a heat source pipeline, comprising: a first heat exchange section, which is arranged in the heat exchanger of the power generation cycle device, the first heat exchange section An input end is connected to a first heat source; and a second heat exchange section is arranged in the heat energy input part of the refrigeration device, and an input end of the second heat exchange section is connected to an output end of the first heat exchange section; wherein the condenser outputs a first fluid in the condenser section to the pump section, and the pump pressurizes the first fluid in the pump section and outputs it to the heat exchanger section, and a first heat source fluid of the first heat source flows into the first heat exchange section through the input end of the first heat exchange section and is absorbed by the first fluid in the heat exchanger section. After absorbing heat, the high-pressure first fluid becomes gaseous and is then output to the turbine section, and the gaseous first fluid in the turbine section pushes The turbine generator is driven to generate electricity and then output to the condenser section. The first heat source fluid with residual heat flows through the second heat exchange section and is absorbed by the heat energy input part of the refrigeration device, thereby providing the heat energy required for refrigeration of the refrigeration device, so that the temperature of a second fluid in the first cold exchange section set in the refrigeration part of the refrigeration device is reduced. The low-temperature second fluid flows through the second cold exchange section set in the condenser, so that the temperature of the first fluid in the condenser section is reduced and condensed into liquid, thereby increasing the temperature difference between the first fluid before being input to the turbine section and after being output from the turbine section, so as to improve the overall power generation efficiency of the binary cycle power generation system. A binary cycle power generation system having a refrigeration device for refrigeration using waste heat as described in claim 1, wherein (1) the refrigeration device is the absorption refrigeration machine, the heat energy input part of the refrigeration device is a generator of the absorption refrigeration machine, and the refrigeration part of the refrigeration device is an evaporator of the absorption refrigeration machine, or (2) the refrigeration device is the adsorption refrigeration machine, the heat energy input part of the refrigeration device is a desorber of the adsorption refrigeration machine, and the refrigeration part of the refrigeration device is an evaporator of the adsorption refrigeration machine. A binary cycle power generation system with a refrigeration device utilizing waste heat for refrigeration as described in claim 1 or 2, further comprising a cooling device and a condensing cooling section, wherein the condensing cooling section is disposed in the condenser, an input end and an output end of the cooling device are respectively connected to an output end and an input end of the condensing cooling section, and the cooling device is used to supply cooling water to the condensing cooling section to cool down the condenser. The binary cycle power generation system having a refrigeration device utilizing waste heat for refrigeration as described in claim 1 or 2 further includes an air cooling device, which cools down the condenser by air cooling. A binary cycle power generation system with a refrigeration device utilizing waste heat for refrigeration as described in claim 1 or 2, further comprising a cooling device, a first control valve and a second control valve, wherein an input end of the first control valve is connected to the output end of the second cold exchange section, a first output end of the first control valve is connected to the input end of the first cold exchange section, a second output end of the first control valve is connected to an input end of the cooling device, a first input end of the second control valve is connected to an output end of the cooling device, and the A second input end of the second control valve is connected to the output end of the first cold exchange section, and an output end of the second control valve is connected to the input end of the second cold exchange section. The first control valve is used to control a diversion ratio of the second fluid from the second cold exchange section to the first cold exchange section and the cooling device, and the second control valve is used to control a confluence ratio of the second fluid from the first cold exchange section and the cooling device to the second cold exchange section, and the cooling device is used to cool the second fluid. A binary cycle power generation system with a refrigeration device utilizing waste heat for refrigeration as described in claim 1 or 2, wherein the heat source pipeline further includes a heat source control valve, the heat source control valve having a first input end, a second input end, and an output end, the first input end being connected to the output end of the first heat exchange section, the second input end being connected to a second heat source, the output end of the heat source control valve being connected to the input end of the second heat exchange section, the heat source control valve controls an input ratio of the first heat source fluid at the first input end and a second heat source fluid from the second heat source at the second input end to control a fluid output temperature at the output end of the heat source control valve to meet the temperature requirement of the refrigeration device. A binary cycle power generation system with a refrigeration device utilizing waste heat for refrigeration as described in claim 6, wherein the second heat source is at least one of a geothermal heat source, a solar heat source, a fossil fuel heat source, a biofuel heat source, and an industrial waste heat source. A binary cycle power generation system having a refrigeration device utilizing waste heat for refrigeration as described in claim 1 or 2, wherein the first heat source is at least one of a geothermal heat source, a solar heat source, a fossil fuel heat source, a biofuel heat source, and an industrial waste heat source. A method for generating electricity in a binary cycle power generation system with a refrigeration device utilizing waste heat for refrigeration, comprising the following steps: transporting a first heat source fluid of a first heat source to a heat exchanger of a power generation cycle device, so that a first fluid that is pressurized and transported from a pump of the power generation cycle device to the heat exchanger absorbs heat and becomes gaseous; transporting the first fluid to a turbine generator of the power generation cycle device to drive the turbine generator to generate electricity, and then transporting the first fluid to a condenser of the power generation cycle device; transporting the first heat source fluid with residual heat from the heat exchanger to a heat energy input part of a refrigeration device, The heat energy input part absorbs the residual heat of the first heat source fluid to provide the heat energy required for refrigeration of the refrigeration device, so that a refrigeration part of the refrigeration device reduces the temperature of a second fluid, wherein the refrigeration device is one of an absorption refrigeration machine and an adsorption refrigeration machine; and the second fluid is transported to the condenser, so that the temperature of the first fluid transported from the turbine generator to the condenser is reduced and condensed into a liquid state, thereby increasing the temperature difference between the first fluid before being input to the turbine generator and after being output from the turbine generator, so as to improve the overall power generation efficiency of the binary cycle power generation system. A method for generating electricity of a binary cycle power generation system having a refrigeration device utilizing waste heat for refrigeration as described in claim 9, wherein (1) the refrigeration device is the absorption refrigeration machine, the heat energy input part of the refrigeration device is a generator of the absorption refrigeration machine, and the refrigeration part of the refrigeration device is an evaporator of the absorption refrigeration machine, or (2) the refrigeration device is the adsorption refrigeration machine, the heat energy input part of the refrigeration device is a desorber of the adsorption refrigeration machine, and the refrigeration part of the refrigeration device is an evaporator of the adsorption refrigeration machine.

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