EP0036981A2 - Procédé pour le fonctionnement d'une installation de chauffage à absorption - Google Patents

Procédé pour le fonctionnement d'une installation de chauffage à absorption Download PDF

Info

Publication number: EP0036981A2
Authority: EP; European Patent Office
Prior art keywords: heat; refrigerant; absorber; heat generator; pump
Prior art date: 1980-03-28
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.): Granted

Application number

EP81101810A

Other languages

German (de)

English (en)

Other versions

EP0036981A3 (en

EP0036981B1 (fr

Inventor

Paul Heimbach

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.)

Buderus AG

Original Assignee

Buderus AG

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.)

1980-03-28

Filing date

1981-03-12

Publication date

1981-10-07

1981-03-12 Application filed by Buderus AG filed Critical Buderus AG

1981-03-12 Priority to AT81101810T priority Critical patent/ATE11694T1/de

1981-10-07 Publication of EP0036981A2 publication Critical patent/EP0036981A2/fr

1981-11-25 Publication of EP0036981A3 publication Critical patent/EP0036981A3/de

1985-02-06 Application granted granted Critical

1985-02-06 Publication of EP0036981B1 publication Critical patent/EP0036981B1/fr

Status Expired 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
- F25B30/00—Heat pumps
- F25B30/04—Heat pumps of the sorption type
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters

Definitions

the invention relates to a method for operating an absorption heating system, which is alternatively operated either as a heat pump or as direct heating, with a heat transfer circuit which is thermally coupled to a refrigerant circuit containing a heat generator, condenser, evaporator and absorber, with low-refrigerant solution from the heat generator to Absorber and refrigerant-rich solution from the absorber to the heat generator, and a device for performing the method.
Such a method is carried out with the heating system described in DE-OS 27 58 773. With this method, it is possible to achieve the required heating output even at low outside temperatures without additional equipment, such as a boiler heated with fossil fuels. If the heat output of the heat pump is no longer sufficient at a specified outside temperature, the heating system is switched from heat pump operation to direct heating operation. For this, the fuel supply to the burner of the heat generator, the refrigerant, is increased circuit interrupted and the low-refrigerant solution from the heat generator either directly or via the refrigerant cross-section of the condenser to the absorber.
the solution heated in the heat generator is brought into heat exchange with the heat transfer medium, avoiding a heat exchanger between low-refrigerant and refrigerant-rich solution (in the first case in the absorber, in the second case additionally in the condenser). In both cases, the solvent is transported by a pump.
the present invention is therefore based on the object of developing a method of the type mentioned at the outset which is distinguished by lower energy consumption and high operational reliability.
This object is achieved in that when switching from heat pump to direct heating operation, the exchange of low-refrigerant and refrigerant-rich solution between the heat generator and the absorber is interrupted and the heat transfer medium in the heat generator is exchanged with flue gas and by taking up condensation heat in the reflux cooler of a rectifier downstream of the heat generator is warmed.
the supply of low-refrigerant solvent from the heat generator to the absorber and of refrigerant-rich solvent from the absorber to the heat generator is interrupted.
the absorption heating system is converted into a direct heating system.
the heat transfer medium is then heated exclusively by direct heat absorption from the flue gas flow in the heat generator and by absorption of condensation heat in the reflux cooler of the rectifier.
the advantage of the method according to the invention is that the absorber, the condenser and the solvent pump no longer become hot in direct heating mode as before. This reduces the heat loss in the heating system and improves the energy balance. In this way, the risk of corrosion on these parts of the system is significantly reduced.
the heat transfer medium when switching from heat pump operation to direct heating operation, is directed past the absorber and the condenser.
the absorber and the condenser remain cold according to the invention, the heat carrier in these parts of the system is not heated anyway. By bypassing the absorber and the condenser, the pressure drop in the heat transfer circuit is reduced.
the method according to the invention has a favorable effect if, when switching from heat pump to direct heating mode, a pump for circulating refrigerant-rich solution and the device for heating the evaporator are removed be switched.
the pump for the refrigerant-rich solution and the blower for the evaporator are switched off. In this way, the energy consumption of the heating system is reduced.
a device for performing the method according to the invention comprises a heat pump with a heat generator, an evaporator, a condenser, an absorber, and a heat exchanger with flow cross sections for low-refrigerant and refrigerant-rich solution, and is characterized by shut-off devices in the solvent lines leading to the heat exchanger, and one in the flue gas stream of the heat generator and a heat exchanger connected to this heat exchanger, a rectifier connected downstream of the heat generator.
shut-off pump for the refrigerant-rich solution and for a low-refrigerant solution to provide a float regulator for low-refrigerant solution actuated by the bottom liquid of the rectifier downstream of the heat generator.
the rectifier has feeds for the refrigerant-rich solution and for the gaseous portions of the low-refrigerant solution leaving the heat generator.
the refrigerant-rich liquid is fed to the heat generator from the sump of the rectifier, and a refrigerant-rich gas is removed from the head of the rectifier.
a shut-off valve is arranged in the refrigerant supply line to the condenser.
the barrier The valve is located, for example, in the extraction line for gaseous refrigerant from the head of the rectifier.
a multi-way valve and a bypass line for the condenser and absorber connected to the multi-way valve are provided in the heat transfer circuit in front of the condenser.
the figure shows a flow diagram of an absorption heating system according to the invention.
the absorption heating system shown in the figure works monovalently-alternatively, i.e. it can be used without additional heating sources in the entire application area defined by its intended use as space and / or domestic water heating, for example of single and multi-family houses, and is alternatively operated either as a heat pump or in direct heat exchange between primary energy and heating water.
the heating system contains a heat generator 1 which is heated with a burner 2.
a pump 3 is used to circulate refrigerant-rich solution, for example water with ammonia, when the heating system is operating as a heat pump.
the refrigerant-rich solution first gets into a countercurrent heat exchanger 4, where it is exchanged with low-refrigerant heat. Solution warmed and fed to a rectifier 5 via a check valve 22.
the rectifier 5 the refrigerant-rich solution is broken down into a refrigerant-rich liquid (water), which collects in the sump of the rectifier 5 and essentially Chen the refrigerant, for example ammonia, containing gas that collects at the head of the rectifier 5, instead.
the refrigerant-rich solution 5 is removed from the sump - and reaches an expeller 6, which is arranged in the heat generator 1.
the lower-boiling refrigerant evaporates in the expeller 6 and is separated from the solution in a subsequent separator 7 and fed to the rectifier 5.
the remaining solution passes through a float controller 24, the function of which will be described in the following, into the heat exchanger 4, in which it is cooled in the heat exchange with a refrigerant-rich solution. After cooling, the solution is sprayed into an absorber 8.
Gaseous refrigerant is removed from the head of the rectifier 5 and fed via a line 20, which can be shut off with a solenoid valve 21, to a condenser 10 in which the refrigerant is liquefied.
the refrigerant is then expanded to evaporation pressure and evaporated in an evaporator 11 by supplying heat, for example from the ambient air, which is drawn in by a fan 23 via the evaporator 11.
the gaseous refrigerant is then fed to the absorber 8.
the gaseous refrigerant is absorbed by the solvent.
the solution which is rich in refrigerant, is removed from the sump of the absorber and reaches the solvent pump 3.
the heating system further comprises a heat transfer circuit in which a heat transfer medium, for example water, is fed via a circulation pump 12 to a consumer group 13, for example with a plurality of space heaters.
the heat transfer medium emits heat in the consumer group 13. He arrives closing via a line 17 to a multi-way solenoid valve 18, which is switched during heat exchange operation so that the heat transfer medium in tube coils 14 gets into the condenser and is heated there.
the heat transfer medium is then passed through tube coils 15 in the absorber 8 and through the heat released here warmed further.
the heat transfer medium is further heated in a reflux cooler 9 in the head of the rectifier 5, with reflux liquid condensing out at the coils of the reflux condenser 9 at the same time.
the heat transfer medium is passed through a heat exchanger 16 arranged in the flue gas stream of the heat generator 1 and further heated there before it is fed back to the circulating pump 12.
the heating system according to the invention is switched to direct heating mode.
the pump 3 for the refrigerant-rich solution and the fan 23 on the evaporator 11 are switched off, the solenoid valve 21 in the refrigerant line 20 is closed and the multi-way valve 18 in the heat transfer line is switched so that the heat transfer medium no longer flows through the condenser 10 and the absorber 8, but through the bypass line 19
the rectifier 5 By switching off the pump 3, the rectifier 5 is no longer supplied with liquid, so that the liquid level in the sump of the rectifier 5 drops. As a result, the float valve 24 closes the solvent line 25.
the heat transfer medium is only heated in the rectifier 5 and in the heat generator 1. (Coils 9, 16). Both in the structure and in the energy groove utilization factor is obtained dadruch an approximation to the V th e rhal- a conventional heating system, which represented an optimum in the case of direct heating.
the outlay on equipment is very low, especially since the heat exchanger 16 in the heat generator 1 can also be used expediently in heat pump operation, if the solvent temperature in the expeller 6 is to be equal to or higher than the desired final flue gas temperature.

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Thermal Sciences (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Sorption Type Refrigeration Machines (AREA)

EP81101810A 1980-03-28 1981-03-12 Procédé pour le fonctionnement d'une installation de chauffage à absorption Expired EP0036981B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT81101810T ATE11694T1 (de)	1980-03-28	1981-03-12	Verfahren zum betreiben einer absorptionsheizanlage.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19803012061 DE3012061A1 (de)	1980-03-28	1980-03-28	Verfahren und vorrichtung zum betreiben einer absorptions-heizanlage
DE3012061		1980-03-28

Publications (3)

Publication Number	Publication Date
EP0036981A2 true EP0036981A2 (fr)	1981-10-07
EP0036981A3 EP0036981A3 (en)	1981-11-25
EP0036981B1 EP0036981B1 (fr)	1985-02-06

Family

ID=6098639

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP81101810A Expired EP0036981B1 (fr)	1980-03-28	1981-03-12	Procédé pour le fonctionnement d'une installation de chauffage à absorption

Country Status (3)

Country	Link
EP (1)	EP0036981B1 (fr)
AT (1)	ATE11694T1 (fr)
DE (2)	DE3012061A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0046196B1 (fr) *	1980-08-16	1984-09-12	Buderus Aktiengesellschaft	Procédé pour le fonctionnement d'une installation de chauffage à absorption monovalente et alternative
US4665711A (en) *	1985-02-08	1987-05-19	Ic Gas International Ltd.	Heat pump systems
RU2393388C1 (ru) *	2009-03-10	2010-06-27	Сергей Петрович Горенко	Система теплоснабжения
RU2426033C1 (ru) *	2010-08-24	2011-08-10	Сергей Петрович Горенко	Система теплоснабжения и холодоснабжения
EP2871430A1 (fr) *	2013-11-07	2015-05-13	Robert Bosch Gmbh	Pompe à chaleur à absorption
CN111156734A (zh) *	2020-01-15	2020-05-15	东北电力大学	可变工况运行的全热回收型吸收-压缩式耦合热泵系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2748415C2 (de) *	1977-10-28	1986-10-09	Naamloze Vennootschap Nederlandse Gasunie, Groningen	Heizverfahren und bimodales Heizsystem zum Heizen von Gebäuden
DE2756910A1 (de) *	1977-12-17	1979-06-21	Vaillant Joh Gmbh & Co	Sorptionswaermepumpe
DE2758773C2 (de) *	1977-12-29	1981-12-17	Ask August Schneider Gmbh & Co Kg, 8650 Kulmbach	Bivalente Heizanlage
DE2838715A1 (de) *	1978-09-02	1980-03-13	Vaillant Joh Gmbh & Co	Sorptionswaermepumpe

1980
- 1980-03-28 DE DE19803012061 patent/DE3012061A1/de not_active Withdrawn
1981
- 1981-03-12 EP EP81101810A patent/EP0036981B1/fr not_active Expired
- 1981-03-12 DE DE8181101810T patent/DE3168717D1/de not_active Expired
- 1981-03-12 AT AT81101810T patent/ATE11694T1/de not_active IP Right Cessation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0046196B1 (fr) *	1980-08-16	1984-09-12	Buderus Aktiengesellschaft	Procédé pour le fonctionnement d'une installation de chauffage à absorption monovalente et alternative
US4665711A (en) *	1985-02-08	1987-05-19	Ic Gas International Ltd.	Heat pump systems
RU2393388C1 (ru) *	2009-03-10	2010-06-27	Сергей Петрович Горенко	Система теплоснабжения
RU2426033C1 (ru) *	2010-08-24	2011-08-10	Сергей Петрович Горенко	Система теплоснабжения и холодоснабжения
EP2871430A1 (fr) *	2013-11-07	2015-05-13	Robert Bosch Gmbh	Pompe à chaleur à absorption
CN111156734A (zh) *	2020-01-15	2020-05-15	东北电力大学	可变工况运行的全热回收型吸收-压缩式耦合热泵系统
CN111156734B (zh) *	2020-01-15	2022-11-08	东北电力大学	可变工况运行的全热回收型吸收-压缩式耦合热泵系统

Also Published As

Publication number	Publication date
DE3168717D1 (en)	1985-03-21
EP0036981A3 (en)	1981-11-25
DE3012061A1 (de)	1981-10-08
EP0036981B1 (fr)	1985-02-06
ATE11694T1 (de)	1985-02-15

Legal Events

Date	Code	Title	Description
1981-08-08	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1981-09-21	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1981-10-07	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LU NL SE
1981-11-25	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LU NL SE
1982-02-03	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: BUDERUS AKTIENGESELLSCHAFT
1982-07-07	17P	Request for examination filed	Effective date: 19820429
1984-12-07	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1985-02-06	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LI LU NL SE
1985-02-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19850206 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19850206
1985-02-06	REF	Corresponds to:	Ref document number: 11694 Country of ref document: AT Date of ref document: 19850215 Kind code of ref document: T
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1985-03-29	ET	Fr: translation filed
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1985-12-17	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1986-02-19	26N	No opposition filed
1986-03-03	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: LU Payment date: 19860303 Year of fee payment: 6
1987-01-07	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 19870107 Year of fee payment: 7
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1988-09-30	BERE	Be: lapsed	Owner name: BUDERUS A.G. Effective date: 19880331
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1989-03-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19890331

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