DE2804895A1 - Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator - Google Patents

Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator

Info

Publication number
DE2804895A1
DE2804895A1 DE19782804895 DE2804895A DE2804895A1 DE 2804895 A1 DE2804895 A1 DE 2804895A1 DE 19782804895 DE19782804895 DE 19782804895 DE 2804895 A DE2804895 A DE 2804895A DE 2804895 A1 DE2804895 A1 DE 2804895A1
Authority
DE
Germany
Prior art keywords
evaporator
heat pump
internal combustion
engine
combustion engine
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.)
Withdrawn
Application number
DE19782804895
Other languages
German (de)
Inventor
Georg Schmitz
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.)
BROETJE FA AUGUST
Original Assignee
BROETJE FA AUGUST
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 BROETJE FA AUGUST filed Critical BROETJE FA AUGUST
Priority to DE19782804895 priority Critical patent/DE2804895A1/en
Publication of DE2804895A1 publication Critical patent/DE2804895A1/en
Withdrawn legal-status Critical Current

Links

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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

A heat pump (2) has a condenser (4) an expansion valve (5) an evaporator (6) and a compressor (3). The compressor is driven by an internal combustion engine (1) and the evaporator draws heat from atmospheric air (7) which is blown over it. The exhaust (12) of the internal combustion engine is mixed with the air blown over the evaporator. This raises the temp sufficiently to prevent frost formation on the evaporator and also increases the thermodynamic efficiency by raising the tamp of the source. The engine cooling water (9, 10) s also used to preheat the water heated by the heat pump condenser (4).

Description

Verfahren zum Abtauen eines Luft durchsetzenden VerdampfersMethod of defrosting an aerated evaporator

einer lärmepumpe Die Erfindung betrifft ein Verfahren zum Abtauen eines Iuft durchsetzenden Verdampfers einer mit Brennkraftmaschinen betriebenen Wärmepumpe.a noise pump The invention relates to a method for defrosting an air-permeating evaporator operated by internal combustion engines Heat pump.

Die Verdampfer von Wärmepumpen, welche den Wärmegehalt atmosphärischer Luft nutzen, neigen sehr stark zum Vereisen, weil der Wasserdampfgehalt der durchgesetzten Luft sich an der kälteren Oberflache des Verdampfers niederschläg. The evaporator of heat pumps, which increases the heat content of the atmosphere Use air, tend to freeze very strongly, because of the water vapor content of the enforced Air is deposited on the colder surface of the evaporator.

Die sich bildenden Eiskrusten müssen durch periodisches Abtauen des tTerdamDfers wieder entfernt werden, da. der Wärmedurchgang durch die isolierende Wirkung von Eis wesentlich verschlechtert wird. Das Abtauen des Verdampfers stel t einen aufwendigen Vorgang dar, der zum Beispiel mit Hilfe eines getrennten Abtaukreislaufes durchgeführt werden kann. Zu -iesem Zweck wird der verdampfer zweirohrig ausgeführt, und aus einem für das Abtauen installierten Järmespeicher wird nach Bedarf eine nichtgefrierende Fliissigkeit durch den Verdampfer gepumpt.The ice crusts that form must be defrosted periodically tTerdamDfers will be removed again since. the heat transfer through the insulating Effect of ice is significantly worsened. Defrost the evaporator t is a complex process, for example with the help of a separate defrosting circuit can be carried out. For this purpose, the evaporator is designed with two pipes, and a heat accumulator installed for defrosting becomes a non-freezing liquid is pumped through the evaporator.

Zum Abtauen von Verdampfern ist es auch bekannt, Umkehrschaltungen vorzunehmen, indem durch entsprechende Umstellung von eingebauten Armaturen das im Verdampfer vom Wärmegehalt der durchgesetzten Luft verdampfende Kältemittel rückwärts durch die Anlage fließt, d. h., vom Kompressor mit starker tberhitzung zunächst durch den Verdampfer gedrückt wird. Reversing circuits are also known for defrosting evaporators to be carried out by converting the built-in fittings accordingly refrigerant evaporating backwards in the evaporator from the heat content of the air through it flows through the system, d. i.e. from the compressor with severe overheating at first is pushed through the evaporator.

Wärmepumpen können verhältnismäßig witschaftlich mit Brennkraftmaschinen betrieben werde, indem die beim Verbrennungsprozess in der Maschine freigesetzte Wärmeenergie über das Kühlwasser und die Abgase teilweise zurückgewonnen werden kann und über geeignete Wärmeaustauscher ebenso wie die dem Kondensator der Wärmepumpe entzogene 5 rme, beispielsweise einem Heizungskreislauf zugemischt wird. Heat pumps can be relatively economical with internal combustion engines operated by the released during the combustion process in the machine Thermal energy can be partially recovered via the cooling water and the exhaust gases can and via suitable heat exchangers as well as the condenser of the heat pump withdrawn 5 rme, for example, a heating circuit is added.

Der Erfindung liegt die Aufgabe zugrunde, bei einer solchen mit Brennkraftmaschinen betriebenen Wärmepumpe das Abtauen der Verdampfer wirtschaftlicher und einfacher zu gestalten. The invention is based on the object of such with internal combustion engines operated heat pump, defrosting the evaporator is more economical and easier to design.

Diese Aufgabe ist gemäß der Erfindung dadurch gelöst worden, daß die Abgase der Brennkraftmaschine der Eintrittseite des Verdampfers zugeführt werden. Durch die höhere Temperatur der Abgase wird die Vereisung des Verdampfers vermieden. This object has been achieved according to the invention in that the exhaust gases from the internal combustion engine are fed to the inlet side of the evaporator. The higher temperature of the exhaust gases prevents the evaporator from icing up.

Vorzugsweise werden die Abgase der Brennkraftmaschine der durchzusetzenden Luft vor dem Eintritt in den Verdampfer beigemischt. Die Luft erhält dadurch ebenfalls eine höhere Temperatur, wodurch die Vereisung des Verdampfers vermieden oder zumindest verzögert wird. The exhaust gases from the internal combustion engine are preferably the ones to be enforced Air added before entering the evaporator. The air also receives this a higher temperature, thereby avoiding or icing up the evaporator at least is delayed.

Durch die höhere Temperatur der zugeführten Luft stehen dem Verdampfer auch höhere wärmemengen zur Verfügung, wodurch sich die Carnot'sche Leistungszahl wesentlich erhöht. Durch diese Wllirkungsverbesserung der Wärme pumpe kann auf den Wärmetauscher zur Ausnutzung der Wärme der Abgase zwecks Beimischung in den Heizungskreisleuf verzichtet werden, so daß die Anlage der Wärmepumpe kostengünstig zu bauen ist. The evaporator is exposed to the higher temperature of the air supplied higher amounts of heat are also available, which increases the Carnot coefficient of performance significantly increased. By this Wllirkungsverbesserung the heat pump can on the Heat exchanger to utilize the heat of the exhaust gases for the purpose of admixture in the heating circuit can be dispensed with, so that the system of the heat pump can be built inexpensively.

Es ist auch möglich, die Abgase der Brennkraftmaschine einem ersten Teilbereich der Eintrittseite des Verdampfens unvermischt zuzuführen und die danach etwas abgektihlten Abgase noch einmal der in einen zweiten Teilbereich des Verdampfers eintretenin Luft beizumischen. It is also possible to have the exhaust gases from the internal combustion engine a first To supply part of the inlet side of the evaporation unmixed and then The slightly cooled exhaust gases are fed into a second section of the evaporator to mix in air.

In vorbestimmten Intervallen können diese Gaswege durch die Teilbereiche des Verdampfers gewechselt werden. Dies ist durch einfaches Umstellen von Klappen in den Gaswegen auf der intrittseite des Verdampfers möglich. These gas paths can pass through the subregions at predetermined intervals of the evaporator must be changed. This is done by simply moving flaps possible in the gas paths on the inlet side of the evaporator.

Ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens zum Abtauen des Verdampfe 5 ist in der Zeichnung dargestel't, die eine schematisch dargestellte Schaltung einer Wärmepumpe zeigt. An embodiment of the method according to the invention for defrosting of the evaporator 5 is dargestel't in the drawing, which is a shown schematically Circuit of a heat pump shows.

Der Kreislauf der Wärmepumpe ist mit 2 bezeichnet. The circuit of the heat pump is denoted by 2.

Das verwendete Kältemittel wird durch diesen Kreislauf mit dem Kompressor 3 gedrückt, der von einem Dieselmotor 1 angetrieben wird. Es kann hier auch eine andere Brennkraftmaschine, beispielsweise ein Gasmotor, verwendet werden. Mit 4 ist ein Wärmetauscher bezeichnet, der als Kondensator für die ?!ärmeumpe dient, indem sich das vom Kompressor eingepumpte Kältemittel niederschlägt und kondensiert. In der Drossel 5 werden die Druckverh-ltnisse normalisiert, bevor das Kältemittel dem Verdampfer 6 zugeführt wird. In dem Verdampfer wird das Kaltemittel durch den Wärmeinhalt des passierenden Luftstroms 7 verdampft. Mit 9 und 10 ist ein Kühlkreislauf des Dieselmotors 1 bezeinet, der auf einen Wärmetauscher 8 wirkt und somit zusätzlich zum Kondensator 4 freiwerdende Wärme an beispielsweise einen Heizungskreislauf 14 einer Heizung 13 abgibt. Die Abgase des Dieselmotors 1 werden gemäß der Erfindung über die Abgasleitung 12 dem in den Verdampfer eintretenden Luftstrom beigemischt.The refrigerant used is through this cycle with the compressor 3, which is driven by a diesel engine 1, is pressed. It can Another internal combustion engine, for example a gas engine, is also used here will. 4 with a heat exchanger is referred to as a condenser for the poor pump serves by the refrigerant pumped in by the compressor precipitating and condensing. In the throttle 5, the pressure conditions are normalized before the refrigerant the evaporator 6 is supplied. In the evaporator, the refrigerant is through the The heat content of the passing air stream 7 evaporates. With 9 and 10 is a cooling circuit of the diesel engine 1, which acts on a heat exchanger 8 and thus additionally The heat released to the condenser 4, for example, to a heating circuit 14 a heater 13 gives off. The exhaust gases of the diesel engine 1 are according to the invention mixed into the air flow entering the evaporator via the exhaust pipe 12.

LeerseiteBlank page

Claims (4)

Ansprüche: Verfahren zum Abtauen eines Tuft durchsetzenden Verdampfers einer mit Brennkraftmaschinen betriebenen @ärmepumpe, d a d u r c h g e k e n n z e i c h n e t, daß die Abgase der Brennkraftmaschine (1) der Eintrittsseite des Verdampfers (6) zugeführt werden.Claims: Method for defrosting a tuft penetrating evaporator a heat pump operated by internal combustion engines, d u r c h e k e n n n z e i c h n e t that the exhaust gases of the internal combustion engine (1) the inlet side of the Evaporator (6) are supplied. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Abgase der Brennkraftmaschine der Luft vor dem intritt in den Verdampfer (6) beigemischt werden. 2. The method according to claim 1, characterized in that the exhaust gases the internal combustion engine is mixed with the air before it enters the evaporator (6) will. 3. Verfahren nsch Anspruch 1, dadurch gekennzeichnet, daß die Abgase der Brennkraftmaschine (1) einem ersten Teilbereich der Eintrittsseite des Verdampfers (6) zugeführt werden und daR die danach etwas abgekihlten Abgase erneut der in einen zweiten Teilbereich d-s Verdampfte 5 eintrete#en Luft beigemischt werden. 3. The method nsch claim 1, characterized in that the exhaust gases of the internal combustion engine (1) a first sub-area of the inlet side of the evaporator (6) and that the flue gases, which are then somewhat cooled down, are fed back into a second sub-area d-s evaporated 5 entering air are added. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Gaswege durch den Verdampfer (6) in vorbestimmten Intervallen gewechselt werden. 4. The method according to claim 3, characterized in that the gas paths can be changed by the evaporator (6) at predetermined intervals.
DE19782804895 1978-02-04 1978-02-04 Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator Withdrawn DE2804895A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782804895 DE2804895A1 (en) 1978-02-04 1978-02-04 Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782804895 DE2804895A1 (en) 1978-02-04 1978-02-04 Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator

Publications (1)

Publication Number Publication Date
DE2804895A1 true DE2804895A1 (en) 1979-08-09

Family

ID=6031225

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782804895 Withdrawn DE2804895A1 (en) 1978-02-04 1978-02-04 Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator

Country Status (1)

Country Link
DE (1) DE2804895A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501841A1 (en) * 1981-03-16 1982-09-17 Boites Vitesses Indles Domestic heat pump installation - has compressor driven by electric motor and-or internal combustion engine acting through differential gearbox
FR2525330A1 (en) * 1982-04-14 1983-10-21 Renault Tech Nouvelles Evaporator de-icing in air heat pump driven by heat engine - using engine cooling water and exhaust heat to melt external ice on evaporator tubes
FR2542377A1 (en) * 1983-03-09 1984-09-14 Misawa Homes Co IC engine driving compressor or heat pump
EP0119651A1 (en) * 1983-03-09 1984-09-26 B.V. v/H. Gebr. de Haan Device for the dosed absorption of heat from exhaust gases
US4517799A (en) * 1983-03-09 1985-05-21 Misawa Home Co., Ltd. Heat utilizing system using internal combustion engine
WO1988006258A1 (en) * 1987-02-19 1988-08-25 Dalin Paer Heat recuperation device, for use during the operation of a heat pump system
US4805689A (en) * 1986-05-29 1989-02-21 Aisin Seiki Kabushiki Kaisha Outdoor unit for a heat pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501841A1 (en) * 1981-03-16 1982-09-17 Boites Vitesses Indles Domestic heat pump installation - has compressor driven by electric motor and-or internal combustion engine acting through differential gearbox
FR2525330A1 (en) * 1982-04-14 1983-10-21 Renault Tech Nouvelles Evaporator de-icing in air heat pump driven by heat engine - using engine cooling water and exhaust heat to melt external ice on evaporator tubes
FR2542377A1 (en) * 1983-03-09 1984-09-14 Misawa Homes Co IC engine driving compressor or heat pump
EP0119651A1 (en) * 1983-03-09 1984-09-26 B.V. v/H. Gebr. de Haan Device for the dosed absorption of heat from exhaust gases
US4517799A (en) * 1983-03-09 1985-05-21 Misawa Home Co., Ltd. Heat utilizing system using internal combustion engine
US4805689A (en) * 1986-05-29 1989-02-21 Aisin Seiki Kabushiki Kaisha Outdoor unit for a heat pump
WO1988006258A1 (en) * 1987-02-19 1988-08-25 Dalin Paer Heat recuperation device, for use during the operation of a heat pump system

Similar Documents

Publication Publication Date Title
DE60204540T2 (en) METHOD AND DEVICE FOR REMOVING CARBON DIOXIDE BY DESUBLIMATION WITH REGARD TO ITS STORAGE
DE69212356T2 (en) De-icing control
DE2822808A1 (en) DEVICE FOR COOLING CHIMNEY GASES
CN1865812A (en) Heat pump system and method for heating a fluid
EP1221390A2 (en) Air conditioning for a motor vehicle
EP0174292A2 (en) Defrosting method for evaporators of heat pump and refrigeration plants
DE2804895A1 (en) Heat pump driven by IC engine - uses engine exhaust to prevent frost formation on heat pump evaporator
EP0280942A3 (en) Collector for the condensate originating from the evaporator of a vehicle air conditioning apparatus
GB1202268A (en) An apparatus for evaporating a liquor
DE102008043823B4 (en) heat pump system
DE3834387A1 (en) Device for heating and cooling the passenger compartment of motor vehicles, in particular buses
DE2921257A1 (en) Heat pump for central heating - combines heat exchanger and evaporator in common unit in refrigeration section of circuit
EP0838644B1 (en) Method and device for defrosting a cooler of a refrigeration plant
DE4028787C1 (en) Vehicle air conditioner evaporator desiccator - has pipe system separate from heating circuit through heat exchanger
DE2540813A1 (en) HEAT PUMP
DE3216948A1 (en) EXTERNAL HEAT EXCHANGER AND HEAT EXCHANGE DEVICE
DE1963232A1 (en) Method and device for generating energy by means of internal combustion engines with compressed air supply
JPS5886361A (en) Heat pump device operated by low-temperature source consisting of turbid solution or corrosive solution
DE167119C (en)
EP1353130A1 (en) System for keeping a heat exchange apparatus ice-free
US2046319A (en) Cooling apparatus and method
DE3323338A1 (en) Monovalent heat pumps with air as the energy source
DE804009C (en) Defrosting device
DE2554917A1 (en) HEAT PUMP
CH141194A (en) Compound compression refrigeration machine for refrigerated transport vehicles.

Legal Events

Date Code Title Description
OGA New person/name/address of the applicant
8140 Disposal/non-payment of the annual fee for main application