WO2010053278A2 - Vertical and horizontal integrated heat exchange units equipped with a waste heat recovery system - Google Patents

Abstract

The present invention relates to vertical and horizontal integrated heat exchanger units equipped with a waste heat recovery system designed in such a way that during heat exchange between a high-temperature waste heat supplied by a drier during blow dry and a low-temperature exhaust gas, the heat is recovered from the heat source and is supplied to the drier in the form of hot air via a condenser. Provided is a vertical integrated heat exchange unit (10) for supplying hot air to the inside of a drier (30) through a discharge duct (18) when external fresh air is sucked into a suction chamber (12) by a fan blower (14) driven by a driving device (15) and is passing through a heat exchanger (17) for generating a heat source. Said vertical integrated heat exchanger comprises: a compressor (50) installed on the upper side of the suction chamber (12) so as to compress an introduced low-temperature, low-pressure refrigerant to a high-temperature, high-pressure refrigerant, and to introduce the refrigerant into said heat exchanger (17) for generating a heat source; a heat exchanger (41) for recovering waste heat which is installed inside a discharge duct (40) for discharging waste heat from the inside of said drier (30) installed on the upper side of a discharge duct (18) in which said heat exchanger (17) for generating a heat source is installed, so as to exchange heat between the high-temperature waste heat discharged through said discharge duct (18) and a low-temperature exhaust gas; and a refrigerant expansion device (60) for converting the compressed high-pressure refrigerant discharged through a refrigerant discharge pipe (17b) of said heat exchanger (17) for generating a heat source into a low-temperature, low-pressure refrigerant, and introducing the low-temperature, low-pressure refrigerant to said heat exchanger (41) for recovering waste heat. Said heat exchange unit as described above requires low power and thus can greatly saving energy in comparison to heat exchangers used in conventional integrated heat exchange units (steam heater type, thermal medium heater type, and electric heater type). Also, said heat exchange unit uses electricity which is a clean fuel, and thus does not produce exhaust gases, while steam heater type and thermal medium heater type heat exchange units produce exhaust gases. In addition, said heat exchange unit consumes the least energy among existing integrated heat exchange units, thereby reducing production costs (a minimum of 20% of the energy consumed by using electric heaters and 5% of the energy consumed by using boiler kerosene). Furthermore, said heat exchange unit requires only 15–20% of the power consumed by using electric heaters, thus remarkably reducing a primary power installation cost, preventing a sharp increase in the amount of electricity used due to increasing oil costs, and reducing losses due to labour costs incurred when the amount of electricity consumed exceeds a certain amount. Said heat exchange unit also does not require separate secondary equipment (a boiler room, etc.), and thus can be installed in small spaces.

Description

[Correction according to Rule 26.12.2009] Vertical and horizontal type integral heat exchanger with waste heat recovery

The present invention relates to a vertical and horizontal type integrated heat exchange unit having a waste heat recovery device, and more particularly, a heat source is generated by recovering a heat source during heat exchange of high temperature waste heat exhausted by ventilation drying with a low temperature exhaust gas in a drier. A vertical and horizontal type integral heat exchange unit having a waste heat recovery unit configured to supply hot air to a dryer through a heat exchanger.

Dryer is a supply / exhaust circulation device that supplies heat to gravure printing machines, laminating machines, extrusion machines, industrial coating machines, and other equipment that requires drying. Fan blowers and heat sources It consists of generator and sealed box structure.

The air movement path of the dryer is divided into an air supply unit for supplying hot air, an exhaust unit for discharging the used hot air, and a hot air recovery unit for reusing part of the used heat.

The internal structure of the dryer is divided into an upper box and a lower box, and the air supply part and the exhaust part are formed in common in the upper box, and the air supply part is usually in the form of a nozzle. Guide Roll) and Hot Air Recovery.

It is installed on one side of such a dryer, and the independent equipment parts for producing high temperature and air of air supplied to the dryer are easy to install and combine in one body in order to simplify the volume, called an integrated heat exchange unit.

Since the integrated heat exchange unit is designed as a combination from the initial design, the duct facilities considering the flow of air are combined together so that air movement of each part can be performed smoothly. In addition, the number and shape of the components combined according to the purpose and type of use may be changed, such an integrated heat exchange unit is divided into two types according to the installation position of the heat exchanger. The horizontal type is located and the heat exchanger is located in the discharge duct of the fan blower.

7 and 8 show an integrated heat exchange unit of the vertical type in which the heat exchanger 17 is located in the discharge duct of the fan blower 15.

The integrated heat exchange unit 10 includes an intake port 11 formed at one side of a lower end, an intake chamber 12 for changing a temperature by mixing air sucked through the intake port 11, and in the intake chamber 12. An intermediate filter box 20 in which a HEPA filter (13; HEPA: High Efficiency Particulate Air) is inserted into a filter paper made of asbestos fiber, which is a known special electrified fiber that filters even minute harmful substances and contaminants contained in air; A fan blower (14) which allows suction through the HEPA filter (13) in the filter box (20) and blows air to the discharge duct side at the suction port (11), and drives the fan blower (14). A heat exchanger (17) for converting low temperature air discharged through the duct (16) upward through the fan blower (14) and the fan blower (14) into air of high air volume and the heat exchanger (17). Is installed on one side of the heat exchanger (17 Filter box 20 of the upper part is inserted into the HEPA filter 13 to filter the air converted into high temperature air again through the) and the discharge duct formed on one side of the filter box 20 of the upper It consists of 18.

The heat exchanger 17 is a device for converting the low temperature and high air volume air supplied from the fan blower into high temperature air, and there are a steam heater type, a heat medium heater type, and an electric heater type according to the type of the primary heat source.

Steam heater type heat exchanger requires steam boiler to generate steam by exchanging steam by passing heat inside heat exchanger and additional facilities of boiler room for driving the boiler. In order to maintain the exchange temperature, most traps are installed at the outlet of the heat exchanger to reduce the loss of steam and the connection of the control valve device. In addition to the energy source used in the steam transportation process, energy loss is generated due to exposure of pipes and components, and when the thermal energy is consumed due to the characteristics of steam, a device is required to discharge water (condensed water) in consideration of the characteristic of changing to water. A separate boiler room area is required for boiler installation, and it is necessary to prepare for damage of equipment parts due to freezing and freezing in winter.

As fuel mainly used for this steam heater type heat exchanger, light oil, boiler kerosene, LPG, LNG, etc. are used.

The heat medium heater type heat exchanger circulates the heated heat medium oil inside the heat exchanger to exchange heat, and in most cases, a flow control valve is used to maintain the temperature. Like steam boilers, the boiler room and the auxiliary facilities of the boiler room are required.

The installation area of the boiler room is larger than the steam boiler, and the equipment parts and equipment cost are about twice as much as the steam heater type. As with steam boilers, there are energy losses from pipe exposure.

The fuel mainly used in the heat medium heater type heat exchanger of this type is light oil, boiler kerosene, LPG, LNG, and the like, and an electric heater may be used when the heat consumption is low.

A heater mainly used in an electric heater type heat exchanger is an electric fan heater. In order to increase heat dissipation efficiency during air circulation, it is manufactured by attaching a heat radiating fin to a pipe heater. By using an electric heater, which is one of the clean fuels, there is no problem of environmental pollution during operation of the equipment. However, the calorific value per ((860 kcal / h per ㎾) is limited, so the more heat required, the larger the capacity. However, if the density is higher than the specified value, there is a risk of damaging the heater and generating a fire, so the installation of secondary safety devices should be considered.

Costs are incurred according to the amount of electricity added, and safety management personnel should be hired when the legal capacity is exceeded.

The product dried by the hot air supplied to the dryer from the integrated heat exchange unit is printed, adhesive, adhesive, coating on films (PET, OPP, NYLON, CPP, LLDED, deposition film, etc.), paper, aluminum foil, etc. made of petrochemicals In this case, the ink, adhesive, coating liquid and the like are largely divided into oil-soluble adhesive, adhesive, ink, coating liquid and the like water-soluble adhesive, ink, coating liquid used in dilution in organic solvents.

Both oil-soluble and water-soluble streams require fast drying (property drying) to increase productivity. In order to increase the fast drying, the air must be raised to a constant temperature to dry and ventilate well.

Particularly oil-soluble products should not mix evaporated residual solvents with the product.

In order to increase the quick drying rate and to provide a smooth ventilation drying condition, a large amount of air must be generated in a short time to be heated (maintain a relatively stable temperature), and this must be forced into a long sealed box space and exhausted. In order to stabilize the temperature, the wind speed on the surface of the product should be lowered below a certain speed.

Inside the sealed box is divided into air supply and exhaust part separated into independent partitions in one box, the air supply is made of nozzle-type injection port, the exhaust is made of filter inlet type, the outside of the box is connected to the supply and exhaust duct It should be made of easy structure.

The dryer is moved from the integrated heat exchange unit that produces the air in the atmosphere where the dust is filtered to a high temperature and high air volume in a short time through an air supply duct to a sealed dry box, and high inside the dry box. Air traveled by the wind speed is dispersed in several places to reduce the speed and dry the product through the air supply nozzle. At this time, when the product is dried, it is converted into gaseous solvent and moisture and dispersed and expanded inside the dry box. The gaseous solvent and moisture are discharged to the outside of the dry box through the exhaust port inside the dry box, at which time the high temperature and high air volume is also discharged.

The air volume used in this dryer is generally 40m3 / min to 60m3 / min, and the temperature is generally 50 ° C to 80 ° C (about 80%), but the airflow and temperature may be higher depending on product specifications.

The air of the high temperature and high air volume discharged through the exhaust port contains a solvent and water, and when reused, forced dry air condition is not achieved, so the quick drying is significantly reduced. Some relatively less contaminated heat sources under dry boxes may be reused but the risk of contamination cannot be ruled out.

The energy consumption of the dryer is mostly consumed in an integrated heat exchange unit, and is divided into a motor driving energy of a fan blower and a heat source generating energy of the heat exchanger.

The motor driving energy among the primary energy of the integrated heat exchange unit is all electricity, and the primary energy of the heat exchanger 17 is used for electricity and combustible fuels (light oil, boiler kerosene, LPG, LNG), etc. The consumption of group 17 is 90% or more.

Heat energy of the heat exchanger is discarded to the outside due to the ventilation drying characteristics of the dryer, the energy consumed for drying due to forced ventilation drying is only a fraction of 15% to 20%, and more than 80% to 85% of the heat energy is discarded. In particular, in the case of using flammable fuels, the environmental pollution due to the emission of emissions is being increased.

In addition, since the exhaust duct of the dryer is installed in the workplace, the exhaust gas containing the heat source of 80% to 85% or more is discharged through the exhaust duct, so that the temperature in the workplace rises and the working environment is poor, especially during the hot summer season. There is a problem in that the maintenance cost of the equipment is excessively consumed as the air conditioning equipment needs to be operated to cool.

That is, when the waste heat exhaust gas exhausted from the dryer is discharged to the outside of the workplace, it pollutes the environment and the temperature of the workplace is increased by the exhaust duct installed in the workplace.

Accordingly, an object of the present invention for solving the problems as described above is to recover the heat source when heat-exchanging the high temperature waste heat exhausted during ventilation drying in the dryer with a low temperature exhaust gas to supply hot air to the dryer through a heat exchanger for heat source generation It is to provide a vertical and horizontal type integral heat exchange unit having a waste heat recovery device configured to be.

In order to achieve the above object, the vertical type heat exchange unit having a waste heat recoverer according to the present invention has a fan blower driven by a driving device, whereby outside fresh air is sucked into the suction chamber and passes through a heat source heat exchanger. In an upright type integrated heat exchange unit for supplying hot air into a dryer through a discharge duct, a low temperature low pressure refrigerant, which is installed at an upper surface of the suction chamber, is compressed into a high temperature and high pressure refrigerant to be used as a heat source heat exchanger. Compressor for introducing the; Heat exchanger for waste heat recovery, wherein the heat source heat exchanger is installed in an exhaust duct for exhausting waste heat in the dryer provided on an upper surface of a discharge duct installed therein, and heat exchanges high temperature waste heat discharged through the exhaust duct with a low temperature exhaust gas. tile; And a refrigerant expansion device for converting the condensed high temperature refrigerant discharged through the refrigerant discharge tube of the heat source heat exchanger into a low temperature low pressure refrigerant and introducing the waste heat recovery heat exchanger.

Since the integrated heat exchanger unit equipped with the waste heat recovery device of the present invention requires less power, it is possible to save significantly higher energy than the heat exchanger (steam heater type, heat medium type heater, electric heater type) used in the conventional integral heat exchange unit. It does not have a risk of generating exhaust gas generated by using steam heater or heating medium heater because it uses electricity which is a clean fuel, and it reduces the production cost of the produced product because it consumes the least energy among existing integrated heat exchange units. (At least 2/10 of the energy consumption expenditure when using electric heaters and at least 1/20 of boiler kerosene). In addition, since only 15% to 20% of the power consumed when using the electric heater is required, the primary power equipment cost is significantly less, and furthermore, it is possible to prevent the surge in electricity consumption due to the increase in oil costs, as well as to exceed the required capacity. Labor cost can be reduced, and no additional secondary equipment (boiler room, etc.) is required, so it can be installed in a small space.

1 is a cross-sectional view showing that the dryer is connected to the vertical type integral heat exchange unit equipped with the waste heat recovery device of the present invention.

Figure 2 is a cross-sectional view showing a vertical type integral heat exchanger unit equipped with a waste heat recovery machine of the present invention.

3 is a side cross-sectional view of FIG. 2.

4 is a cross-sectional view showing that the dryer is connected to a horizontal type integral heat exchange unit equipped with a waste heat recovery device of the present invention.

5 is a cross-sectional view showing a horizontal type integral heat exchange unit equipped with a waste heat recovery device of the present invention.

6 is a side cross-sectional view of FIG. 5.

7 is a side view showing a conventional vertical type integrated heat exchange unit.

8 is a front view showing a conventional vertical type integrated heat exchange unit.

Explanation of symbols on the main parts of the drawings

10: integral heat exchange unit 12: suction chamber

14 fan blower 17 heat exchanger for heat generation

18: discharge duct 30: dryer

40: exhaust duct 41: waste heat recovery heat exchanger

50: compressor 60: refrigerant expansion device

61 expansion valve 62 capillary tube

63: distributor 70: wind pressure switch

In the vertical type integrated heat exchange unit having a waste heat recovery device according to the present invention, the fresh air is sucked into the suction chamber by a fan blower driven by a driving device, and the inside of the dryer is discharged through the discharge duct while passing through the heat exchanger for generating heat. A vertical type heat exchange unit for supplying hot air to a furnace, comprising: a compressor installed at an upper surface of the suction chamber to compress a low temperature low pressure refrigerant into a high temperature high pressure refrigerant to introduce a refrigerant into the heat source heat exchanger; Heat exchanger for waste heat recovery, wherein the heat source heat exchanger is installed in an exhaust duct for exhausting waste heat in the dryer provided on an upper surface of a discharge duct installed therein, and heat exchanges high temperature waste heat discharged through the exhaust duct with a low temperature exhaust gas. tile; And a refrigerant expansion device for converting the condensed high temperature refrigerant discharged through the refrigerant discharge tube of the heat source heat exchanger into a low temperature low pressure refrigerant and introducing the waste heat recovery heat exchanger.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing that the dryer is connected to the vertical type integral heat exchange unit with a waste heat recovery device of the present invention, Figure 2 is a cross-sectional view showing a vertical type integral heat exchange unit with a waste heat recovery device of the present invention, Figure 3 Figure 2 is a side cross-sectional view of Figure 2, Figure 4 is a cross-sectional view showing that the dryer connected to the horizontal type integral heat exchange unit equipped with the waste heat recovery device of the present invention, Figure 5 is a horizontal type integral heat exchange unit with a waste heat recovery device of the present invention 6 is a cross-sectional side view of FIG. 5.

Independent equipment parts for producing high-temperature, high-air air to be supplied to the dryer 30 are installed in one body to facilitate installation and simplify the volume, and are referred to as an integrated heat exchange unit 10.

Since the integrated heat exchange unit 10 is designed as a combination from the initial design, duct facilities considering the flow of air are combined together so that air movement of each part can be performed smoothly. In addition, the number and shape of the components combined according to the purpose and type of use may be changed, such an integrated heat exchange unit is divided into two types according to the installation position of the heat exchanger. The horizontal type is located and the heat exchanger is located in the discharge duct of the fan blower.

The integrated heat exchange unit 10 shown in Figs. 1 to 3 shows a heat exchanger (heat generating heat exchanger) 17 of the vertical type integral heat exchange unit 10 in which the fan blower 14 is located on the discharge duct side. have.

The integrated heat exchange unit 10 includes an intake port 11 formed at one side of a lower end, an intake chamber 12 for changing a temperature by mixing air sucked through the intake port 11, and in the intake chamber 12. An intermediate filter box into which a hepa filter, which is a filter paper made of asbestos fiber, which is a special specially charged fiber that filters even minute harmful substances and contaminants contained in the air, is inserted, and the hepa filter in the filter box is provided at the suction port 11. A fan blower 14 which allows suction to pass through and blows air to the discharge duct side, a driving device 15 which drives the fan blower 14, and a duct directed upward through the fan blower 14 A heat source generation heat exchanger (condenser 17) for converting the low temperature air discharged through the air into the air of a high air volume and a heat exchanger (17); Through high temperature Comprises a discharge duct (18) formed on a side of the air re-converted to air filtration, and the HEPA filter is inserted, the upper filter box so that the clean air, the upper filter box.

Reference numeral 70 denotes a wind pressure switch for detecting a flow of air passing through the respective outlets of the exhaust duct 41 and the discharge duct 18.

By supplying hot air into the dryer 30 through the discharge duct 18, printing, bonding, etc. to films (PET, OPP, NYLON, CPP, LLDED, deposition film, etc.) made of petrochemicals, paper, aluminum foil, etc. Adhesive and coating.

The interior of the dryer 30 is divided into an upper box and a lower box, the air supply unit and the exhaust unit are commonly formed in the upper box, the air supply unit is usually in the form of a nozzle, in the case of the lower box so that the fabric can pass smoothly There is a guide roll and a hot air recovery unit.

That is, in the integrated heat exchange unit, the air is moved to the closed dry box through the air supply duct, and the air moved at high wind speeds inside the dry box is dispersed to various places, and the speed decreases through the air supply nozzle. Dry the product. At this time, when the product is dried, it is converted into gaseous solvent and moisture and dispersed and expanded inside the dry box. The gaseous solvent and moisture are discharged to the outside of the dry box through the exhaust port inside the dry box, at which time the high temperature and high air volume is also discharged.

At this time, the exhaust duct 40 is located above the discharge duct 18 of the integrated heat exchange unit 10 so as to be in communication with the hot wind recovery unit for recovering the air of the high temperature and high air volume discharged outside the dry box of the dryer 30. .

In the exhaust duct 40, a waste heat recovery heat exchanger 41 for exchanging heat of high temperature and high air volume discharged through the hot wind recovery unit of the dryer 30 with a low temperature exhaust gas is installed. The heat exchanger 41 communicates with the heat source generation heat exchanger 17 provided in the discharge duct 18.

Refrigerant discharged from the compressor (50) is sucked into the heat exchanger (17) through the refrigerant suction pipe (17a), and the compressor (50) is installed above the suction chamber (12) to remove the waste heat. The low-temperature low-pressure gas refrigerant discharged and sucked from the refrigerant discharge pipe 41a of the recovery heat exchanger 41 is compressed into a high-temperature high-pressure refrigerant to be discharged to the heat source generation heat exchanger 17.

The refrigerant having passed through the refrigerant discharge pipe 17b of the heat source heat exchanger 17 is converted into gas of low temperature and low pressure while passing through the capillary tube 62 of the refrigerant expansion device 60 to exchange waste heat recovery 41. Flows into.

The refrigerant expansion device (60) includes an expansion valve (61) for expanding a high temperature refrigerant discharged through the refrigerant discharge pipe (17b) and converting the refrigerant into a low pressure refrigerant, and a low pressure refrigerant expanded from the expansion valve (61). Collector is composed of a distributor (63) for distributing to a plurality of capillary tubes (62) for supplying a plurality of waste heat recovery heat exchanger (41).

4 to 6 show an integrated heat exchange unit 10 of a horizontal type in which a heat source heat exchanger (condenser) 17 is located on the inlet side of the fan blower 14.

In such a horizontal type integrated heat exchange unit, the heat source heat exchanger 17 is provided in the suction chamber 12.

The structure of the dryer 30 to satisfy the ventilation drying conditions is mostly utilized only to discharge, that is, discard the used heat source. Although some of the heat is reused, it is only used within the range that satisfies the efficiency of the ventilation drying conditions.

Direct reuse of the heat source discarded in the dryer 30 may not only satisfy the ventilation drying conditions but may also result in deterioration of product quality, provision of product defects, and deterioration in productivity. Therefore, in order to effectively utilize the waste heat discarded, only the pure heat source of the exhaust heat source discharged should be recovered and used.

* Dryers 30 used in the ventilation drying is equipped with a plurality of dryers in the production equipment to satisfy the fast drying conditions of the product is completed as a single drying equipment. The size and capacity of the dryer are determined according to the production conditions of the product. Since the integrated heat exchange unit 10 is also manufactured according to different air flow and temperature conditions, the waste heat that is discarded also varies in temperature and air flow.

The air supply unit and the exhaust unit of the dryer are installed under different installation conditions, and the air supply unit is provided with an integrated heat exchange unit 10 in the same quantity as the installation quantity of the dryer in order to satisfy different fast drying conditions, and the exhaust unit is provided in a separate dryer installed. It is used to connect individual exhaust ducts and integrate them into one main exhaust duct.

The waste heat recovery capacity is calculated in proportion to the capacity of the integrated heat exchange unit, and one waste heat recovery unit is installed in one integrated heat exchange unit. This can satisfy both the installation quantity of the dryer and the different drying conditions (air volume + temperature = heat quantity).

Since the waste heat recovery unit is installed as close as possible to the dryer, nearly 100% of the waste heat can be used before the heat loss occurs as waste heat passes through the exhaust line.

In order to recover the maximum amount of waste heat under the condition of nearly 100% waste heat utilization, the freezing principle was applied to maximize the waste heat recovery rate. In air-cooled refrigerators, the liquid refrigerant changes to a gaseous state and is subcooled to an extremely low temperature.

The supercooled gas absorbs the surrounding heat to lower the ambient temperature, and the gas refrigerant absorbing the surrounding heat is condensed while being compressed to high temperature and high pressure through the compressor 50 and converted into a high temperature liquid state. The high temperature liquid refrigerant is moved to the heat source heat exchanger 17 again, and the surrounding air is sucked through the fan blower 14 to cool the heat source heat exchanger 17. The heat source heat exchanger 17 The air passing through the heat exchange is converted into hot air. This hot air is supplied into the dryer 30 through the discharge duct 18.

The integrated heat exchange unit provided with the waste heat recovery device of the present invention is equipped with a waste heat recovery heat exchanger 41 in the exhaust duct 40 to maximize the waste heat recovery, and utilizes a heat source heat exchanger 17 as a high temperature heat exchanger. To produce high heat, it was used as a heat source to supply to the dryer (30).

The power source of the integrated heat exchanger unit equipped with the waste heat recovery device of the present invention is electricity, and the most energy is consumed in the compressor (50), and the amount of power consumed by the compressor is surrounding the gas supercooled in the waste heat recovery heat exchanger (41). The more energy is absorbed, the less energy is consumed.

The most important point in the integrated heat exchange unit provided with the waste heat recovery device of the present invention is that by recovering and reusing the heat source of waste heat generated in the dryer 30 without loss as much as possible, it is possible to produce the temperature required for drying with a small amount of energy consumption. That is, when the high-temperature, high-pressure gaseous refrigerant compressed by the compressor 50 is first passed through the heat source heat exchanger 17 to generate heat, and exhausted through the dryer 30, 80% of the waste heat exhausted. The above is recovered and compressed into a gaseous refrigerant to reuse only a pure heat source, which is repeated over a short time.

Therefore, the temperature is increased each time a cycle is formed, and since the energy consumption requires only the power required to operate the compressor, high temperature heat can be produced with only a small amount of power. In other words, since the generated waste heat is recovered from the nearest place and used in the nearest place, the heat loss due to exposure can be reduced, and the efficiency is increased, so that the energy consumption is reduced.

The integrated heat exchanger unit equipped with the waste heat recovery device of the present invention is designed for high temperature heat exchanger, not a cooling device, in consideration of different critical temperature points of the refrigerant by calculating the amount of heat required for the dryer. Therefore, the heat transfer area of the heat exchanger is produced about 2 to 3 times in proportion to the capacity of the compressor because it uses high temperature heat unlike the conventional cooler or air conditioner.

In the integrated heat exchange unit having the waste heat recovery device of the present invention, the consumption of electrical energy is mainly consumed in the compressor 50, which consumes minimal power by the reuse condition of the heat source and is 15% to 20% compared to the conventional electric heater method. Consumes only%

In consideration of the different compression ratio and the critical temperature of the refrigerant in accordance with the operating temperature condition of the dryer 30, it is possible to manufacture a heat generator (heat exchanger) at low to medium or low temperature or more. This is a key technology that can be continuously applied with the development of new refrigerants and compressors.

The integrated heat exchange unit provided with the waste heat recovery device of the present invention is a technique different from the conventional heat pump.

Since the conventional heat pump method is manufactured for two purposes of cooling and heating, the number of parts to be mounted is increased compared to the present invention, and the energy consumption at an extremely low temperature of the subzero region is provided by installing the outdoor unit externally during heating. Is increased, and normal operation is not possible, but the present invention is installed in most industrial production equipment spaces not in the sub-zero region, so there is no operation in the sub-zero region, and energy consumption rate is increased because the waste heat generated during the operation of the production equipment is always reused. Constant and normal operation can be continued.

Claims (3)

Outside air is sucked into the suction chamber 12 by the fan blower 14 driven by the driving device 15 and passes through the heat exchanger 17 for generating heat, while the dryer 30 passes through the discharge duct 18. In the vertical type integrated heat exchange unit 10 for supplying hot air to the inside of the A compressor (50) installed on the upper surface of the suction chamber (12) to compress the low temperature low pressure refrigerant into the high temperature high pressure refrigerant to introduce the refrigerant into the heat source heat exchanger (17); The heat source heat exchanger 17 is installed in an exhaust duct 40 for exhausting waste heat in the dryer 30 installed on an upper surface of the discharge duct 18 installed therein, and is discharged through the exhaust duct 40. A waste heat recovery heat exchanger (41) for heat-exchanging the high temperature waste heat to low temperature exhaust gas; A refrigerant expansion device (60) for converting the condensed high temperature refrigerant discharged through the refrigerant discharge pipe (17b) of the heat source heat exchanger (17) into a low temperature low pressure refrigerant to flow into the waste heat recovery heat exchanger (41). Vertical integrated heat exchange unit with a waste heat recovery, characterized in that it comprises a). The expansion valve (61) of claim 1, wherein the refrigerant expansion device (60) expands the high temperature refrigerant discharged through the refrigerant discharge pipe (17b) and converts the refrigerant into a low pressure refrigerant. Vertical type integrated heat exchanger having a waste heat recovery device comprising: a distributor (63) for collecting low-pressure refrigerant expanded at and distributing it to a plurality of capillaries (62) for supplying a plurality of waste heat recovery (41) to the waste heat recovery heat exchanger (41). unit. The fan blower 14 driven by the driving device 15 passes through the heat source generating heat exchanger 17 installed on the inlet side through which the fresh air is sucked into the suction chamber 12 and heat-exchanges with hot air to discharge the duct. In the horizontal type integrated heat exchange unit (10) for supplying hot air heat exchanged into the dryer (30) through the (18), A compressor (50) installed on the upper surface of the suction chamber (12) to compress the low temperature low pressure refrigerant into the high temperature high pressure refrigerant to introduce the refrigerant into the heat source heat exchanger (17); It is installed in the exhaust duct 40 for exhausting the waste heat in the dryer 30 installed above the discharge duct 18, and heat exchanges the high temperature waste heat discharged through the exhaust duct 40 with a low temperature exhaust gas. Waste heat recovery heat exchanger (41); A refrigerant expansion device (60) for converting the condensed high temperature refrigerant discharged through the refrigerant discharge pipe (17b) of the heat source heat exchanger (17) into a low temperature low pressure refrigerant to flow into the waste heat recovery heat exchanger (41). Horizontal type integrated heat exchanger unit having a waste heat recovery, characterized in that it comprises a).

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