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WO2017219052A1 - Système de conversion d'énergie thermique en énergie cinétique ou électrique - Google Patents

Système de conversion d'énergie thermique en énergie cinétique ou électrique Download PDF

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Publication number
WO2017219052A1
WO2017219052A1 PCT/AT2016/000068 AT2016000068W WO2017219052A1 WO 2017219052 A1 WO2017219052 A1 WO 2017219052A1 AT 2016000068 W AT2016000068 W AT 2016000068W WO 2017219052 A1 WO2017219052 A1 WO 2017219052A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine
fluid
heat exchanger
motor
energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/AT2016/000068
Other languages
German (de)
English (en)
Inventor
Siegfried Prugner
Michael ROHRMAIR
Adolf PRUGNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/AT2016/000068 priority Critical patent/WO2017219052A1/fr
Publication of WO2017219052A1 publication Critical patent/WO2017219052A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/04—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled condensation heat from one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat

Definitions

  • the present invention relates to a device for converting thermal energy into motive or electrical energy with a first heat exchanger in which a fluid flowing therethrough is heated, after which the pressurized and gaseous fluid is supplied to a motor or to a turbine coupled to a generator in which the thermal energy of the fluid is converted into motion or electrical energy.
  • a turbine is supplied, which with a generator for generating electrical energy
  • a motor for the provision of
  • the present invention therefore aims to avoid or at least reduce the abovementioned disadvantages of known systems and in particular to increase the efficiency of such a system or arrangement for converting thermal energy into motive or electrical energy, in order in particular to use those
  • the motor or the turbine is followed by at least one further motor or another turbine, in which (r) a conversion of thermal energy into motive or electrical energy with respect to the upstream stage of a motor or a turbine reduced temperature - and or Pressure level is performed.
  • the first stage which comprises at least one heat exchanger and an associated or associated motor or an associated turbine, at least one further motor or a further turbine is connected downstream, succeeds in the fluid after passing through the motor or the Use first stage turbine corresponding residual energy accordingly, since in the
  • Movement or electrical energy is carried out or carried out in relation to the preceding stage reduced temperature and / or pressure level.
  • the downstream engine or the downstream turbine thus remaining in the fluid after passing through the first stage residual energy level can be used accordingly, so that the efficiency of such an inventive arrangement, which at least one further stage of an engine or
  • Motion or electrical energy includes, compared to known single-stage systems can be increased.
  • Heat exchanger can be fed, in which the after
  • downstream stage are used to be used at least partially raised fluid, so that in such a way the overall efficiency of the invention
  • Downstream stage used fluid is hereby advantageously the residual energy
  • downstream stage is preferably brought to the vapor state.
  • associated motor or an associated turbine can be in a cascade-like arrangement
  • Provision of heat energy can be supplied to external consumers, as a further preferred
  • Embodiment of the arrangement according to the invention corresponds.
  • the fluid is guided in a closed circuit through the plurality of at least one respective heat exchanger and a motor or a turbine having stages.
  • inventive arrangement can be optimized. To further improve the efficiency and to optimize the structural design of the
  • fluids have at least partially different chemical and physical properties.
  • a fluid in a fluid circuit of the first stage has a higher boiling point than a fluid in a fluid circuit of at least one
  • the fluids in a conventional manner of water or organic media, such as hydrocarbons or silicone oils
  • At least one heat exchanger is flowed through in counterflow of fluids of different stages, as corresponds to a further preferred embodiment.
  • the at least one heat exchanger of a downstream stage thus the residual heat of the fluid or of the fluids two different stages preceded to
  • one after the other two heat exchangers can be fed.
  • the fluid is thus heated in two stages, namely first in a first of the two further heat exchangers and then in a second of the two further heat exchangers.
  • the first of the two further heat exchangers may be used to heat the fluid in the liquid state
  • the second of the two further heat exchangers may be used to evaporate the fluid heated in the first heat exchanger.
  • the fluid may already be evaporated in the first heat exchanger so that the second heat exchanger can be used to overheat the steam.
  • Another advantage is that the supplied for the operation of the second heat exchanger external Energy according to the respective needs,
  • Efficiency is operated to operate the engine or the turbine of the upstream stage.
  • the mass flow of the working fluid to be heated or evaporated of the respective stage can also be varied, in particular with regard to achieving optimum performance of the engine or of the turbine.
  • the energy supplied externally via the second heat exchanger can thus be selected in the second and optionally further downstream stage (s) such that in each of the downstream stages an optimization of the energy conversion in the engine or turbine independent of the other stages takes place succeed.
  • FIG. 1 is a schematic diagram of a first embodiment of an inventive arrangement for converting thermal energy into motive or electrical energy
  • Fig. 2 in a similar to Fig. 1 representation of a modified embodiment of a inventive arrangement for converting thermal energy into motive or electrical energy
  • FIG. 3 again, similar to the representation according to FIG. 1, shows a further modified embodiment of a device according to the invention
  • a plant for converting thermal energy into motion or electrical energy is generally denoted by 1, wherein in a first stage, a heat exchanger 2 is provided, with which, for example via a non-illustrated solar device via a supply line 3, an energy supply he follows.
  • a heat exchanger 2 heating or heating of a fluid supplied via a line 4, which subsequently takes the form of high-pressure steam via a line 5 of a turbine 6, takes place
  • the turbine 6 is coupled to a generator 7.
  • turbine 6 is a conversion or conversion of thermal energy, as they mediate the heat exchanger 2 for
  • Coupled may also be provided for converting the thermal energy, a motor with which a conversion the thermal energy is provided in kinetic energy.
  • the emerging from the turbine 6 fluid is supplied via a line 8 to a further heat exchanger 9, in which a heating or heating of a
  • Fluid line 10 supplied fluid is made in countercurrent. This fluid is in turn converted in the heat exchanger 9 into a high-pressure steam, which is supplied via a line 10 to a further turbine 11, which, like the turbine 6, is in turn coupled to a generator 12.
  • a heat exchanger 2 or 9 is provided for providing high-pressure steam, which is subsequently supplied to a downstream turbine 6 or 11, in the embodiment shown in FIG. 1, a further heat exchanger 13 a further stage provided in which via a supply line 14 supplied fluid
  • a further heat exchanger 19 is indicated in Fig. 1, which residual heat from the preceding stages in each case for the conversion of thermal Energy is supplied in moving or electrical energy, wherein the heat to be emitted in the heat exchanger 19, for example, a schematically indicated heating, for example, a floor heating 20 is supplied.
  • Residual heat exchanger 22 From the representation of FIG. 1 it can be seen that all stages of the cascade arranged
  • series-connected units for converting thermal energy into motive or electrical energy each having at least one heat exchanger 2, 9 and 13 and a turbine 6, 11 and 16 coupled thereto, are operated with a common fluid, wherein a reservoir for the common fluid 23 is indicated and for a circulation of the fluid, a pump 24th
  • the individual stages or units for converting respective thermal energy into motive or electrical energy in the embodiment according to FIG. 1 are operated, for example, using an organic medium as fluid at the following temperature parameters.
  • the fluid is withdrawn at a temperature of about 80 ° C.
  • the fluid is supplied at a temperature of about 75 ° C of the turbine 11, wherein it is discharged at a temperature of about 55 ° C from the turbine.
  • the fluid is supplied at a temperature of about 53 ° C and at a
  • Turbines with a power of about 3 kW for the turbine 6, of about 2 kW for the turbine 11 and about 1 kW for the turbine 16 are operated, so that it can be seen immediately that compared to a single-stage formation of an assembly for conversion Thermal energy in motion or electrical energy can achieve a correspondingly increased efficiency of the entire system, in particular in connection with a provision of electrical energy.
  • the stages shown in FIG. 2 are also in each case at different temperature and / or pressure levels
  • FIG. 3 another modified embodiment of an arrangement 201 for converting thermal energy into moving or electrical energy is shown, wherein again the same elements or components with a
  • Generator 207 is coupled.
  • a heat exchanger or condenser 209 and a turbine 211 and a generator 212 are provided, while in a third stage, a heat exchanger or condenser 213 and a turbine 216 and a generator 217 are provided. While in the embodiment of FIG. 1 is a common
  • Fluid is provided in all circuits or stages and are provided for the embodiment of FIG. 2 in the individual stages or circuits different fluids, in the embodiment of FIG. 3 in the first circuit, a first fluid, for example water provided while in the second and third circuit, for example, a respective identical fluid, for example, SES 36, in particular in a separate circuit is provided.
  • a further heat exchanger or evaporator 225 is provided, which as well as the first heat exchanger or evaporator 202 from the outside via a supply line 226 energy is supplied.
  • the second turbine 211 can in turn be steamed by the heat exchangers 209 and 226 arranged one behind the other increased pressure for conversion into electrical energy in the generator 212 are supplied.
  • the turbine 216 of the third stage is adjacent to the heat exchanger or
  • Heat exchanger or evaporator 227 is provided, which in turn is supplied with energy from the outside via a supply line 228 as well as in the previous stages to again the third stage fluid, for example SES 36, the turbine 216 with a correspondingly high temperature and high pressure for conversion into electrical energy in the
  • circulation pumps in the individual fluid circuits are designated by 229, 230 and 231.
  • Fluid circuits are formed as follows. in the
  • the fluid After passing through the turbine 206, the fluid passes through the second stage heat exchanger 209, where a residual heat of the fluid for heating or evaporating the fluid of the second
  • Fluid circuit is used. Thereafter, the fluid passes through the third stage heat exchanger 213, in which a
  • the fluid is used to heat the fluid of the third fluid circuit. Thereafter, the fluid is supplied via the circulation pump 229 to the heat exchanger of the first stage. In the fluid circuit of the second stage, the fluid is passed through the turbine 211 through the heat exchanger 213 of the third stage, where a residual heat of the fluid for heating or evaporation of the fluid of the third Fluid circuit is used. After that, the fluid becomes
  • the fluid is supplied via the circulation pump 230 to the heat exchangers 209 and 225 of the second stage to be brought back to the energy level required for the operation of the turbine 211.
  • the fluid is also supplied to the final heat exchanger 219 for providing heat energy to external consumers 220 and the residual heat exchanger 222 after passing through the turbine 216.
  • the fluid is supplied via the circulation pump 231 to the heat exchangers 213 and 227 of the third stage to return to that for the operation of the turbine 216
  • the turbine 206 is supplied as fluid water or water vapor at 160 ° C and a pressure of 5 bar. After the turbine, the water vapor has a
  • the second turbine becomes a different one from water
  • Fluid for example, in turn, an organic fluid, in particular SES 36 at a temperature of 100 ° C and a pressure of 5 bar, while the turbine 211 at a temperature of, for example, about 75 ° C and again leaves a slight overpressure.
  • the third turbine 216 is supplied with the fluid, for example, SES 36 at a temperature of 60 ° C, leaving the turbine at a temperature of about 35-40 ° C.
  • the first heat exchanger or evaporator 202 are about 122 kW supplied, so that the turbine 206 below
  • Condenser 209 second stage delivered to the second stage, in addition to the evaporator or
  • Heat exchanger 225 177 kW are supplied, so that the second turbine 211 a total of about 277 kW are available.
  • the third stage is the total residual heat, consisting of the liquid (condensate) from the first stage, which is received in the heat exchanger 213, and from the total heat of condensation of the fluid vapor from the turbine 211, which is also recorded in the heat exchanger 213, and on the Heat exchanger or evaporator 227 supplied additional heat and used in the third turbine 216.
  • an efficiency of about 11%, for the second turbine 211 an efficiency of about 10%, and for the third turbine 216 an efficiency of about 4% can be assumed for the first turbine 206.
  • a total energy production of approximately 43 kW of electric power can thus be achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne un système (1) de conversion d'énergie thermique en énergie cinétique ou électrique, le système comprenant un premier échangeur de chaleur (2) dans lequel un fluide circulant est chauffé, après quoi le fluide sous pression et gazeux est acheminé jusqu'à un moteur ou une turbine (6) accouplée à un générateur (7), dans lequel/laquelle l'énergie thermique du fluide est convertie en énergie cinétique ou électrique. Selon l'invention, au moins un autre moteur ou une autre turbine (11, 16) sont placés en aval du moteur ou de la turbine (6), autre moteur ou autre turbine dans lequels une conversion d'énergie thermique en énergie cinétique ou électrique est effectuée à un niveau de température et/ou de pression réduit par rapport à l'étage, placé en amont, d'un moteur ou d'une turbine (6), de sorte qu'on peut obtenir un rendement global accru en conséquence d'un système de ce type de conversion d'énergie.
PCT/AT2016/000068 2016-06-20 2016-06-20 Système de conversion d'énergie thermique en énergie cinétique ou électrique Ceased WO2017219052A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/AT2016/000068 WO2017219052A1 (fr) 2016-06-20 2016-06-20 Système de conversion d'énergie thermique en énergie cinétique ou électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AT2016/000068 WO2017219052A1 (fr) 2016-06-20 2016-06-20 Système de conversion d'énergie thermique en énergie cinétique ou électrique

Publications (1)

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WO2017219052A1 true WO2017219052A1 (fr) 2017-12-28

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110209474A1 (en) * 2008-08-19 2011-09-01 Waste Heat Solutions Llc Solar thermal power generation using multiple working fluids in a rankine cycle
EP2514931A1 (fr) * 2011-04-20 2012-10-24 General Electric Company Intégration de la chaleur perdue issue du refroidissement d'air de suralimentation dans un système à cycle de Rankine organique en cascade
US20140000261A1 (en) * 2012-06-29 2014-01-02 General Electric Company Triple expansion waste heat recovery system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110209474A1 (en) * 2008-08-19 2011-09-01 Waste Heat Solutions Llc Solar thermal power generation using multiple working fluids in a rankine cycle
EP2514931A1 (fr) * 2011-04-20 2012-10-24 General Electric Company Intégration de la chaleur perdue issue du refroidissement d'air de suralimentation dans un système à cycle de Rankine organique en cascade
US20140000261A1 (en) * 2012-06-29 2014-01-02 General Electric Company Triple expansion waste heat recovery system and method

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