EP0524269B1 - Hochtemperatur-wärmepumpentransformator - Google Patents

Hochtemperatur-wärmepumpentransformator Download PDF

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Publication number
EP0524269B1
EP0524269B1 EP91918223A EP91918223A EP0524269B1 EP 0524269 B1 EP0524269 B1 EP 0524269B1 EP 91918223 A EP91918223 A EP 91918223A EP 91918223 A EP91918223 A EP 91918223A EP 0524269 B1 EP0524269 B1 EP 0524269B1
Authority
EP
European Patent Office
Prior art keywords
pressure
heat
desorber
absorber
working medium
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.)
Expired - Lifetime
Application number
EP91918223A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0524269A1 (de
Inventor
Vinko Mucic
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.)
Schmeink & Cofreth Energie-Management GmbH
Original Assignee
Schmeink & Cofreth Energie-Management GmbH
Schmeink & Cofreth En Manageme
Schmeink & Cofreth Energie-Management GmbH
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 Schmeink & Cofreth Energie-Management GmbH, Schmeink & Cofreth En Manageme, Schmeink & Cofreth Energie-Management GmbH filed Critical Schmeink & Cofreth Energie-Management GmbH
Publication of EP0524269A1 publication Critical patent/EP0524269A1/de
Application granted granted Critical
Publication of EP0524269B1 publication Critical patent/EP0524269B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/02—Compression-sorption machines, plants, or systems

Definitions

  • the invention relates to a high-temperature heat pump transformer with a solution circuit of a two-component working fluid, in particular an ammonia-water mixture with a flow line branch, in which a poor solution of the working fluid is gradually raised from low to high pressure by pumps and by supplying heat from a lower one brought to a higher temperature level, flows to a resorber, which is fed from a compressor to the resorber pressure, gaseous working fluid component and is absorbed with the release of heat of absorption in the solution, whereby rich solution high pressure is created, which in a return line branch of the solution circuit with at least one switched on Throttle element flows under pressure reduction and heat dissipation to a desorber, in which gaseous working medium component is expelled with supply of thermal energy and fed to the compressor, with further degassers v are provided in which heat transfer from the rich solution flowing in the return line branch to the poor solution flowing in the forward line branch is sufficient this additional gaseous working fluid component is expelled and returned to the solution cycle.
  • the temperature level of the heat of absorption obtained in the resorber is still relatively low in the known heat pump, so that the heat of absorption obtained in generally only for heating purposes.
  • heat at a significantly higher temperature level for example than process heat, is required, and waste heat from the process or from other heat sources is available at a lower temperature level, but significantly higher than the environmental heat or the heat of running waters.
  • the use of heat transformers (DE-PS 33 44 599, FIGS. 3 and 4) is suitable for obtaining the useful or process heat at an elevated temperature level under these temperature conditions.
  • the invention has for its object to develop the system of the known heat pump so that it can be used in the manner of a heat transformer at higher temperature levels and provides an even better heat ratio compared to known heat transformers.
  • this object is achieved in that in the section of the flow line branch adjoining the outlet of the desorber, a throttle element is switched on for a further pressure reduction and the section is then led to the inlet of an absorber connected on the outlet side to the subsequent section of the flow line branch, the in addition, for the purpose of pre-enriching the solution, the gaseous working fluid component expelled via the further degassers is fed in and released with the release of heat of absorption at a lower temperature level, so that the connecting line (s) leading into the absorber, the gaseous working fluid component expelled in the further degassers, at least one expansion machine which lowers the pressure in the gaseous working medium and converts it into mechanical energy is switched on, and that the outlet of the absorber in the subsequent section of the flow line branch igs a pump increasing the pressure of the poor solution pre-enriched in the absorber is connected at least to the desorber pressure.
  • the system part corresponding to the construction of the known heat pump can then - in accordance with the known heat transformers - operate on the desorber and resorber side at higher temperature levels, with the absorption of the gaseous working fluid components expelled in the additional degassers into an absorber operated at ambient temperature to obtain a sufficient temperature and pressure drop to gain additional mechanical energy in the expansion machine can either be used to generate electrical energy in a generator coupled to the expansion machine or - in the case of direct coupling to the compressor - also to reduce the drive power of the drive motor for the compressor of the system.
  • the pump immediately downstream of the absorber, increasing the pressure to the desorber pressure in the subsequent subsection of the flow line branch, is followed by at least two pumps which successively increase the pressure to the absorber pressure, one of the further degassers in the area of the desorber pressure
  • Flow line branch between the first and the second pump and another further degasifier is switched on in the region of the flow line branch between the second and the third pump which is at an intermediate pressure between the desorber and resorber pressure
  • the other degasifier on the other hand is switched on Resorber pressure section of the return line branch are turned on.
  • outlets for the gaseous working fluid component of the further degasifier can each be connected to the inlet of a separate expansion machine, the outlets of which are connected to the connection of the absorber for the gaseous working fluid component.
  • outlets for the gaseous working fluid component of the further degassers can be connected to two inlets assigned to different pressure stages of a common expansion machine, which is then expediently designed as a multi-stage turbine, the outlet of which is connected to the inlet of the absorber for the gaseous working fluid component.
  • the pressure in the further degasifier arranged between the second and the third pump in the flow line branch is preferably at one, for example the root of the product of the Desorber pressure and the intermediate pressure corresponding to the absorber pressure are set, since this optimizes the heat ratio when viewed as a heat pump or - when viewed as a heat transformer - the heat ratio.
  • the illustrated in Figure 1, designated in its entirety with 10 two-substance heat pump transformer according to the invention has a degasser or desorber 12, in which at a pressure p1 by supplying thermal energy at a medium temperature level gaseous working fluid component is expelled from a rich two-fluid working solution.
  • a degasser or desorber 12 in which at a pressure p1 by supplying thermal energy at a medium temperature level gaseous working fluid component is expelled from a rich two-fluid working solution.
  • ammonia-water mixture is used as the working medium, ammonia is expelled in gaseous form from the solution in the desorber 12.
  • the thermal energy required to degas the rich solution may be available, for example, as waste heat at temperatures between 40 and 100 ° C - but in any case still well above the ambient heat.
  • the resulting poor solution is pumped via a first line branch 14 to a absorber 16, the function of which will be explained in detail later, and then pumped to a resorber 18 with a multistage pressure increase to a resorber 18 while the gaseous working medium component is transferred to the resorber a line 20 is supplied with the compressor 22 switched on.
  • the heat of absorption occurring in the resorber 18 during the absorption of the gaseous working medium in the poor solution at a high temperature level can be used, for example, as process heat in work processes.
  • the rich again by resorption of the gaseous working medium is returned from the resorber 18 via a second line branch 24 under pressure reduction to the pressure level p 1 of the desorber in a throttle body 26 in the desorber 12 and degassed there again.
  • the poor solution emerging from the desorber is first fed to an absorber 16 in a first section of the line branch 14, with the pressure being reduced by a throttle member 27, in which the poor solution is dissipated to the ambient atmosphere or to a flowing water to the temperature t m0 is cooled.
  • a throttle member 27 in which the poor solution is dissipated to the ambient atmosphere or to a flowing water to the temperature t m0 is cooled.
  • the pressure is then gradually increased to the absorber pressure p 2, the pressure in the section of the line branch 14 lying between the first pump 32 and the following pump 34 being approximately the same the pressure prevailing in the desorber 12 may be p 1, while consequently a pressure between the desorber pressure p 1 and the resorber pressure p 2 prevails in the section of the line branch 14 lying between the second and third pumps 34 and 36, respectively.
  • leading line branch 24, ie the return line branch, and the forward line branch 14 are temperature changers 38 and 40, in which heat transfer from the rich to the poor solution in the region of the intermediate pressure or the resorber pressure p2 of the flow line branch 14, the rich solution is cooled.
  • a corresponding temperature changer 42 is also connected between the desorber 12 with the absorber 16 and the section of the flow line branch 14 lying between the first and the second pumps 32 and 34.
  • the gaseous working medium component fed to the absorber 16 - as mentioned above - from the expansion machine 30 via the line 28 comes from two further degassers 44 and 46, which are connected between the flow and return line branches 14 and 24 and in which by heat transfer the rich solution on the poor solution is expelled gaseous working fluid component and fed to the expansion machine 30 via lines 48 and 50, respectively.
  • the pressure of the gaseous working fluid component expelled in the further degasser 44 from the poor solution corresponds approximately to the desorber pressure p 1 and the pressure of the gaseous working fluid component expelled from the further degasser 46 at a higher pressure - between the desorber and the resorber pressure p 1 or respectively .
  • p2 - lies.
  • the gaseous working fluid component expelled in the degassers 44, 46 is converted into mechanical energy under relaxation to the absorber pressure p0, which, by mechanical coupling with the compressor 22 and the drive motor 52 of the compressor, is a part of that for the promotion and pressure increase of the gaseous working fluid component expelled in the desorber 12 takes over the drive energy required for the resorber.
  • the expansion machine 30 could also drive a generator for the production of electrical energy.
  • the investment for the heat pump transformer according to the invention is therefore quite worthwhile if waste heat is available in the favorable temperature range, for example between 50 and 90 ° C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
EP91918223A 1991-02-13 1991-10-24 Hochtemperatur-wärmepumpentransformator Expired - Lifetime EP0524269B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4104263 1991-02-13
DE4104263A DE4104263C1 (enrdf_load_stackoverflow) 1991-02-13 1991-02-13
PCT/EP1991/002019 WO1992014977A1 (de) 1991-02-13 1991-10-24 Hochtemperatur-wärmepumpentransformator

Publications (2)

Publication Number Publication Date
EP0524269A1 EP0524269A1 (de) 1993-01-27
EP0524269B1 true EP0524269B1 (de) 1995-03-15

Family

ID=6424902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91918223A Expired - Lifetime EP0524269B1 (de) 1991-02-13 1991-10-24 Hochtemperatur-wärmepumpentransformator

Country Status (5)

Country Link
EP (1) EP0524269B1 (enrdf_load_stackoverflow)
JP (1) JPH05505450A (enrdf_load_stackoverflow)
AT (1) ATE119992T1 (enrdf_load_stackoverflow)
DE (1) DE4104263C1 (enrdf_load_stackoverflow)
WO (1) WO1992014977A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7735325B2 (en) * 2002-04-16 2010-06-15 Research Sciences, Llc Power generation methods and systems
EP3540332B1 (de) * 2018-03-15 2020-07-15 AGO AG Energie + Anlagen Sorptionswärmepumpe und sorptionskreisprozess

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182098A (en) * 1934-09-29 1939-12-05 Mallory & Co Inc P R Duplex solution thermo-compression process
DE867122C (de) * 1950-08-29 1953-02-16 Edmund Dr-Ing E H Altenkirch Verfahren und Vorrichtung zum Heben der einem Waermetraeger entzogenen Waermemenge niedrigerer Temperatur auf eine hoehere Temperatur
DE3344599C1 (de) * 1983-12-09 1985-01-24 TCH Thermo-Consulting-Heidelberg GmbH, 6900 Heidelberg Resorptions-Wärmewandleranlage
DE3408192C2 (de) * 1984-03-06 1987-03-26 Markus 8058 Erding Rothmeyer Verfahren zum Hochtransformieren der Temperatur von Wärme sowie Wärmetransformator
DE3716642A1 (de) * 1987-05-18 1988-12-08 Thermo Consulting Heidelberg Zweistoff-kompressions-waermepumpe bzw. expansionsmaschinen-anlage mit loesungskreislauf
DE3808257C1 (enrdf_load_stackoverflow) * 1988-03-12 1989-03-02 Tch Thermo-Consulting-Heidelberg Gmbh, 6900 Heidelberg, De

Also Published As

Publication number Publication date
WO1992014977A1 (de) 1992-09-03
EP0524269A1 (de) 1993-01-27
JPH05505450A (ja) 1993-08-12
DE4104263C1 (enrdf_load_stackoverflow) 1992-04-09
ATE119992T1 (de) 1995-04-15

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