WO1981000442A1 - Utilization of a heat pump for the feeding of house hold appliances - Google Patents

Utilization of a heat pump for the feeding of house hold appliances Download PDF

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Publication number
WO1981000442A1
WO1981000442A1 PCT/DE1979/000081 DE7900081W WO8100442A1 WO 1981000442 A1 WO1981000442 A1 WO 1981000442A1 DE 7900081 W DE7900081 W DE 7900081W WO 8100442 A1 WO8100442 A1 WO 8100442A1
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WO
WIPO (PCT)
Prior art keywords
heat
water
pump system
heat pump
diesel engine
Prior art date
Application number
PCT/DE1979/000081
Other languages
German (de)
French (fr)
Inventor
H Crede
Original Assignee
H Crede
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 H Crede filed Critical H Crede
Priority to PCT/DE1979/000081 priority Critical patent/WO1981000442A1/en
Publication of WO1981000442A1 publication Critical patent/WO1981000442A1/en
Priority to EP79900957A priority patent/EP0034141A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0257—Central heating systems using heat accumulated in storage masses using heat pumps air heating system
    • F24D11/0278—Central heating systems using heat accumulated in storage masses using heat pumps air heating system with recuperation of waste 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/13—Hot air central heating systems using heat pumps
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • 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

Definitions

  • washing machines Of the household appliances, heat-consuming machines such as washing machines, dishwashers and tumble dryers are the largest consumers of electricity. Most of the electrical power consumed by these machines is used to heat washing or rinsing water or to generate hot air in the case of the tumble dryer. There is the possibility of washing machines and dishwashers such. B. from the boiler of an oil heating system with hot water. However, only water with a temperature of up to approx. 55oC is available, because higher water temperatures are undesirable in the boilers for calcification reasons. For certain washing or rinsing processes, however, it is desirable or necessary to also use water at a temperature of more than 55 ° C. So far, only electrical heating is available. So far there have been for tumble dryers no alternative to electrical operation.
  • the invention has for its object to replace the use of electrical current in the operation of household appliances, such as washing machines, dishwashers and tumble dryers, by other, cheaper energy, temperatures up to about 100 ° C must be reached.
  • the temperature of the exhaust gases of the diesel engine is between 350 oC and 450 oC depending on the degree of pollution.
  • the washing water of a washing machine for example, can be heated to a desired washing water temperature of almost 100 oC in any case. It is irrelevant to the .principle of the process whether only the diesel engine exhaust gases are used to heat the water or whether all three basically possible heat exchange processes are switched in succession. It may also be appropriate to first obtain washing or rinsing water from the hot water boiler of the heat pump system and then to lengthen it to the final temperature by heat exchange with the diesel engine exhaust gases.
  • the air for a tumble dryer can be preheated by heat exchange with the hot water boiler, after which the final temperature is reached by heat exchange with the diesel engine exhaust gases.
  • the washing or rinsing water or hot air will heat up very quickly, which, as an additional advantage, will significantly reduce the washing, rinsing or drying times.
  • a heat exchange with the pressure side of the refrigerant circuit of the heat pump system and the cooling water and exhaust gases of the diesel engine is essentially only possible during the running time of the diesel engine. Therefore, the respective heat-consuming household appliance is advantageously coupled to the heat pump system, so that it runs in any case with the heat-consuming program step of the household appliance.
  • Refrigerated furniture i.e. refrigerators and freezers
  • the power consumption depends on how large the difference between the. so-called evaporation and condensation temperature of the refrigerant circuit of the refrigerator.
  • the evaporation temperature is the temperature at which the refrigerant must be evaporated in the evaporator inside the refrigerator in order to maintain a desired cooling temperature.
  • the condensation temperature is the temperature at which the coolant is liquefied again under pressure in the condenser attached to the outside of the refrigerator, it being the from the
  • the evaporation temperature is approx. -5 ° C.
  • the condensation temperature is at least + 50 ° C. This is due to the fact that the ambient temperature is of the order of + 20 ° C and the condenser the heat brought out of the refrigerator almost exclusively by convection, i.e. air flow to a poor heat conductor, namely the air must give up. If the condenser area is large enough, freezers, if they are in cooler cellars at an ambient temperature of around + 10oC, can manage with a condensation temperature of + 40oC.
  • the power consumption depends on the difference between the two temperatures mentioned. If this temperature difference could be significantly reduced, the current decrease consumption proportionally. For example, if the evaporation temperature in the refrigerator remained at -5 oC, but the condensation temperature could be reduced to + 5 oC, the temperature difference would only be 10 oC compared to 60 oC previously. This would reduce electricity consumption by around 85%. The same applies analogously to the freezers.
  • the evaporation temperature inside the chest is at a desired inside temperature of - 20 ° C at - 30 ° C and the condensation temperature in the most favorable case at + 40 ° C, so that the usual temperature range is 70 ° C. If the condensation temperature could also be reduced to + 5 oC here, the power consumption would be halved.
  • the order of magnitude of the possible electricity savings under the given conditions is about 800 kWh / year, without it having to be further calculated here.
  • the invention is therefore based on the further object of reducing the electricity consumption of refrigerated furniture by lowering the condensation temperature of the refrigerant.
  • a heat pump system which, according to the patent applications P 26 34 233.6-13 and P 27 15 075.0 of the applicant, works with a water tank as a heat store, which on the one hand works with surrounding heat sources and on the other hand with the The suction side of the refrigerant circuit is in heat exchange.
  • Water heat accumulator takes on a temperature of approx. 0o to 8oC during continuous operation depending on the season. If, according to the invention, the condenser located on the back of the usual refrigeration units is replaced by a simple, sufficiently long copper tube which is immersed in the water tank mentioned, this results in a substantially lower condensation temperature of approximately 5 ° to 10 ° C. compared to previous methods , because the environment, i.e. the content of the storage, has a much lower temperature and also a much more intense heat exchange can take place than with the usual metal-air contact of the conventional capacitor surfaces.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The heat pomp is driven by a Diesel engine. The air or water supply of a house hold apparatus is set into heat exchange relationship with the pressurized part of the refrigerating fluid circuit of the heat pump, with the cooling water of the Diesel engine and/or with the exhaust gases of the Diesel engine. The portion under vacuum of the refrigerating fluid circuit of the heat pump may be in heat exchange relationship with a water thermal accumulator wherein is immersed the condensor of a refrigerating apparatus.

Description

NUTZBARMACHUNG EINER WARMEPUMPENANLAGE BEIM BETREIBENUSE OF A HEAT PUMP SYSTEM IN OPERATION
VON HAUSHALTSGERATENOF HOUSEHOLD APPLIANCES
Von den Haushaltsgeräten sind die Wärme verbrauchenden Maschinen wie Waschmaschinen, Geschirrspülmaschinen und Wäschetrockner die größten Stromverbraucher. Der größte Teil des von diesen Maschinen verbrauchten elektrisehen Stroms fällt für die Erwärmung von Wasch- oder Spülwasser bzw. für die Erzeugung von Heißluft im Falle des Wäschetrockners an. Zwar besteht die Möglichkeit, Waschmaschinen und Geschirrspülmaschinen z. B. aus dem Boiler einer Ölheizungsanlage mit Warmwasser zu versorgen. Dabei steht aber nur Wasser mit einer Temperatur bis zu ca.55ºC zur Verfügung, weil in den Boilern aus Verkalkungsgründen höhere Wassertemperaturen unerwünscht sind. Für bestimmte Wasch- bzw. Spülvorgänge ist es aber erwünscht oder erforderlich, auch Wasser einer Temperatur von mehr als 55 ºC zu verwenden. Hierfür steht bislang nur die elektrische Aufheizung zur Verfügung. Für Wäschetrockner gibt es bisher keine Alternative zum elektrischen Betrieb.Of the household appliances, heat-consuming machines such as washing machines, dishwashers and tumble dryers are the largest consumers of electricity. Most of the electrical power consumed by these machines is used to heat washing or rinsing water or to generate hot air in the case of the tumble dryer. There is the possibility of washing machines and dishwashers such. B. from the boiler of an oil heating system with hot water. However, only water with a temperature of up to approx. 55ºC is available, because higher water temperatures are undesirable in the boilers for calcification reasons. For certain washing or rinsing processes, however, it is desirable or necessary to also use water at a temperature of more than 55 ° C. So far, only electrical heating is available. So far there have been for tumble dryers no alternative to electrical operation.
Elektrische Energie ist teuer, nämlich nach gegenwärtigen Preisen nahezu sechsmal so teuer wie das Äquivalent in Heizöl, wie sich durch einfache Rechnung ermitteln läßt. Der Stromverbrauch der genannten Geräte ist insofern von Bedeutung, als deren Betrieb im allgemeinen mindestens die Hälfte des Stromverbrauches der privaten Haushalte ausmacht. Der Stromverbrauch der privaten Haushalte in der Bundesrepublik Deutschland liegt derzeit in der Größenord nung von ca. 10 kwh/Person und Tag. Kann dieser Verbrauch in den nächsten Jahrzehnten um die Hälfte reduziert werden, so entspricht das einer nicht erforderlichen installiertenElectrical energy is expensive, namely, at current prices, almost six times as expensive as the equivalent in heating oil, as can be determined by simple calculation. The power consumption of the devices mentioned is important insofar as their operation generally accounts for at least half the power consumption of private households. The electricity consumption of private households in the Federal Republic of Germany is currently in the order of approx. 10 kwh / person and day. If this consumption can be reduced by half in the next few decades, this corresponds to an unnecessary installed one
Kraftwerksleistung von ca. 30.000 Megawatt. Das ist die gesamte bis zum Jahre 1985 als derzeit zusätzlich erforder lieh betrachtete Kernkraftwerkskapazität.Power plant output of approx. 30,000 megawatts. This is the total nuclear power plant capacity considered to be required up to 1985.
Der Erfindung liegt die Aufgabe zugrunde, die Verwendung von elektrischem Strom beim Betrieb von Haushaltsgeräten, wie Waschmaschinen, Geschirrspülmaschinen und Wäschetrocknern, durch andere, billigere Energie zu ersetzen, wobei Temperaturen bis ca. 100 ºC erreicht werden müssen.The invention has for its object to replace the use of electrical current in the operation of household appliances, such as washing machines, dishwashers and tumble dryers, by other, cheaper energy, temperatures up to about 100 ° C must be reached.
Vorliegend wurde gefunden, daß sich eine Wärmepumpenanläge, die gemäß Patentanmeldung P 27 44 615.7-13 durch einen Dieselmotor angetrieben wird, sehr einfach und in wirtschaftlicher Weise zum Aufheizen (bis auf Kochtemperatur des in Wasch- und Geschirrspülmaschinen benötigten Wassers sowie der in Wäschetrocknern benötigten Heiß-luft nutzen läßt. Dies erfolgt nach der Erfindung dadurch, daß die Wasserbzw. Luftversorgung des Haushaltsgeräts in. Wärmetausch mitIn the present case, it was found that a heat pump system, which is driven by a diesel engine according to patent application P 27 44 615.7-13, is very simple and economical for heating (up to the boiling temperature of the water required in washing machines and dishwashers and the heat required in tumble dryers) According to the invention, this takes place in that the water or air supply to the household appliance is exchanged with
— der Druckseite des Kältemittelkreislaufs der Wärmepumpen anlage,- the pressure side of the refrigerant circuit of the heat pump system,
— dem Kühlwasser des Dieselmotors und/oder- The cooling water of the diesel engine and / or
— den Abgasen des Dieselmotors gebracht wird.- The exhaust gases of the diesel engine is brought.
Die Temperatur der Abgase des Dieselmotors liegt je nach dessen Belastungsgrad zwischen 350 ºCund 450 ºC. Anstelle oder neben dem Heizungswasser kann damit z.B. das Waschwasser einer Waschmaschine in jedem Falle auf eine gewünschte Waschwassertemperatur von nahezu 100 ºC erhitzt werden. Dabei ist es für das .Prinzip des Verfah rens gleichgültig, ob ausschließlich die Dieselmotorabgase für die Erwärmung des Wassers benutzt werden oder alle drei grundsätzlich in Frage kommenden Wärmetauschvorgänge nacheinander geschaltet werden. Es kann auch zweckmäßig sein, Wasch- oder Spülwasser zunächst aus dem Heißwasser boiler der Wärmepumpenanlage zu beziehen und es anschlies send durch Wärmetausch mit den Dieselmotorabgasen auf die Endtemperatur zu bi Lngen. Die Luft für einen Wäschetrockner kann durch Wärmetausch mit dem Heißwasserboiler v—orerwärmt werden, wonach durch Wärmetausch mit den Dieselmotorabgasen die Endtemperatur erreicht wird.The temperature of the exhaust gases of the diesel engine is between 350 ºC and 450 ºC depending on the degree of pollution. Instead of or next to the heating water, the washing water of a washing machine, for example, can be heated to a desired washing water temperature of almost 100 ºC in any case. It is irrelevant to the .principle of the process whether only the diesel engine exhaust gases are used to heat the water or whether all three basically possible heat exchange processes are switched in succession. It may also be appropriate to first obtain washing or rinsing water from the hot water boiler of the heat pump system and then to lengthen it to the final temperature by heat exchange with the diesel engine exhaust gases. The air for a tumble dryer can be preheated by heat exchange with the hot water boiler, after which the final temperature is reached by heat exchange with the diesel engine exhaust gases.
Da keine elektrischen Heizelemente benötigt werden, vereinfacht sich der Aufbau der genannten Haushaltsgeräte wesentlich. Erforderlich ist nur mindestens ein Wärmetauscher pro angeschlossenem Haushaltsgerät. Durch einfache Ab leitung z.B. der Dieselmotorabgase mittels einer Vorrang- Magnetschaltung können die Abgase, bis die gewünschte Wassertemperatur erreicht ist, zur Aufheizung des Waschwassers verwendet, werden, wonach sie anschließend mittels geeigneter Thermostat-Automatik wieder mit dem Heizungswasserkreislauf in Wärmetausch gebracht werden. Dieses Verfahren ist sinngemäß auch für einen Geschirrspüler verwendbar. Mittels geeignet dimensioniertem Wärmetauscher kann auch Luft für die Beschickung eines Wäschetrockners bis zu einer vorgegebenen gewünschten Temperatur aufgeheizt werden. Aufgrund der hohen Heizleistung der Wärmepumpenanlage und der hohen Temperatur der Dieselmotorabgase wird eine sehr rasche Aufheizung des Wasch- bzw. Spülwassers oder der Heißluft erfolgen, wodurch sich als zusätzlicher Vorteil die Wasch-, Spül- oder Trocknun-gszeiten wesentlich verkürzen. Ein Wärmetausch mit der Druckseite des Kältemittel- kreislaufs der Wärmepumpenanlage und dem Kühlwasser und den Abgasen des Dieselmotors ist im wesentlichen nur während der Laufzeit des Dieselmotors möglich. Mit Vorteil ist deshalb das jeweilige Wärme verbrauchende Haushaltsgerät mit der Wärmepumpenanlage gekoppelt, so daß diese in jedem Fall mit dem Wärme verbrauchenden Programmschritt des Haushaitsge räts läuft.Since no electrical heating elements are required, the construction of the household appliances mentioned is considerably simplified. Only at least one heat exchanger is required per connected household appliance. By simply deriving, for example, the diesel engine exhaust gases using a priority magnetic circuit, the exhaust gases can be used to heat the washing water until the desired water temperature is reached, after which they are then brought back into heat exchange with the heating water circuit using a suitable automatic thermostat. This procedure can also be used for a dishwasher. By means of a suitably dimensioned heat exchanger, air can also be heated up to a predetermined desired temperature for loading a tumble dryer. Due to the high heat output of the heat pump system and the high temperature of the diesel engine exhaust, the washing or rinsing water or hot air will heat up very quickly, which, as an additional advantage, will significantly reduce the washing, rinsing or drying times. A heat exchange with the pressure side of the refrigerant circuit of the heat pump system and the cooling water and exhaust gases of the diesel engine is essentially only possible during the running time of the diesel engine. Therefore, the respective heat-consuming household appliance is advantageously coupled to the heat pump system, so that it runs in any case with the heat-consuming program step of the household appliance.
Auch Kühlmöbel, also Kühlschränke und Tiefkühltruhen, sind in den privaten Haushalten nicht zu vernachlässigende Stromverbraucher. Der Stromverbrauch hängt bei sonstigen, fest vorgegebenen äußeren Bedingungen davon ab, wie groß die Differenz zwischen der. sogenannten Verdampfungs— und der Kondensationstemperatur des Kältemittelkreislaufs des Kühlmöbels ist. Die Verdampfungstemperatur ist diejenige Temperatur, bei welcher das Kältemittel in dem im Innern des Kühlschranks vorhandenen Verdampfer zum Verdampfen gebracht werden muß, um eine gewünschte Kühltemperatur aufrechtzuerhalten. Die Kondensationstemperatur ist diejenige Temperatur, mit welcher das Kühlmittel in dem außen am Kühlmöbel angebrachten Kondensator unter Druck wieder verflüssigt wird, wobei es die aus demRefrigerated furniture, i.e. refrigerators and freezers, are also not negligible consumers of electricity in private households. For other, predetermined external conditions, the power consumption depends on how large the difference between the. so-called evaporation and condensation temperature of the refrigerant circuit of the refrigerator. The evaporation temperature is the temperature at which the refrigerant must be evaporated in the evaporator inside the refrigerator in order to maintain a desired cooling temperature. The condensation temperature is the temperature at which the coolant is liquefied again under pressure in the condenser attached to the outside of the refrigerator, it being the from the
Kühlschrank heraustransportierte Wärme an die Umgebung abgibt. Wird z.B. im Inneren des Kühlschrankes eine Temperatur von 0° C gewünscht, so beträgt die Verdampfungstemperatur ca. - 5ºC. Die Kondensationstemperatur liegt bei mindestens + 50° C. Das liegt daran, daß die Umgebungstemperatur in der Größenordnung von + 20° C liegt und der Kondensator die aus dem Kühlschrank herausgebrachte Wärme nahezu ausschließlich durch Konvektion, also Luftströmung an einen schlechten Wärmeleiter, nämlich die Luft abgeben muß. Bei ausreichend großer Kondensatorfläche können Tiefkühltruhen, wenn sie in kühleren Kellerräumen bei einer Umgebungstemperatur von etwa + 10 ºC stehen, mit einer Kondensationstemperatur von + 40ºC auskommen.Releases the heat transported out to the environment. E.g. if the temperature inside the refrigerator is 0 ° C, the evaporation temperature is approx. -5 ° C. The condensation temperature is at least + 50 ° C. This is due to the fact that the ambient temperature is of the order of + 20 ° C and the condenser the heat brought out of the refrigerator almost exclusively by convection, i.e. air flow to a poor heat conductor, namely the air must give up. If the condenser area is large enough, freezers, if they are in cooler cellars at an ambient temperature of around + 10ºC, can manage with a condensation temperature of + 40ºC.
Wie erwähnt, hängt der Stromverbrauch von der Differenz zwischen den beiden genannten Temperaturen ab. Liesse sich diese Temperaturdifferenz beträchtlich senken, so würde der Strom- verbrauch proportional sinken. Wenn also z.B. die Verdampfungstemperatur im Kühlschrank bei - 5 ºC bleibt, aber die Kondensationstemperatur auf + 5 ºC gesenkt werden könnte, so würde die Temperaturdifferenz nur noch 10 ºC betragen, gegenüber vorher 60 ºC. Dadurch würde sich der Stromverbrauch um ca. 85 % verringern. Gleiches gilt sinngemäß für die Tiefkühltruhen. Die Verdampfungstemperatur im Innern der Truhe liegt bei einer gewünschten Innentemperatur von - 20ºC bei - 30 ºC und die Kondensationstemperatur im gün-stigsten Fall bei + 40 ºC, so daß die übliche Temperaturspanne 70 ºCbeträgt. Könnte man auch hier die Koπdensationstemperatur auf + 5 ºC senken, so würde der Stromverbrauch etwa halbiert. Die Größenordnung der möglichen Stromeinsparung unter den angegebenen Verhältnissen beträgt, ohne daß es hier weiter rechnerisch ausgeführt werden soll, etwa 800 kwh/Jahr.As mentioned, the power consumption depends on the difference between the two temperatures mentioned. If this temperature difference could be significantly reduced, the current decrease consumption proportionally. For example, if the evaporation temperature in the refrigerator remained at -5 ºC, but the condensation temperature could be reduced to + 5 ºC, the temperature difference would only be 10 ºC compared to 60 ºC previously. This would reduce electricity consumption by around 85%. The same applies analogously to the freezers. The evaporation temperature inside the chest is at a desired inside temperature of - 20 ° C at - 30 ° C and the condensation temperature in the most favorable case at + 40 ° C, so that the usual temperature range is 70 ° C. If the condensation temperature could also be reduced to + 5 ºC here, the power consumption would be halved. The order of magnitude of the possible electricity savings under the given conditions is about 800 kWh / year, without it having to be further calculated here.
Der Erfindung liegt daher die weitere Aufgabe zugrunde, den Stromverbrauch von Kühlmöbeln durch Senkung der Kondensationstemperatur des Kältemittels zu verringern.The invention is therefore based on the further object of reducing the electricity consumption of refrigerated furniture by lowering the condensation temperature of the refrigerant.
Zur Absenkung der Kondensationstemperatur von Kühlmöbeln und damit zur Stromeinsparung läßt sich eine Wärmepumpenanlage nutzbar machen, die gemäß den Patentanmeldungen P 26 34 233.6-13 und P 27 15 075.0 des Anmelders mit einem Wassertank als Wärmespeicher arbeitet, der einerseits mit umgebenden Wärmequellen und andererseits mit der Saugseite des Kältemittelkreislaufs in Wärmeaustausch steht. DieserTo lower the condensation temperature of refrigeration units and thus to save electricity, a heat pump system can be used which, according to the patent applications P 26 34 233.6-13 and P 27 15 075.0 of the applicant, works with a water tank as a heat store, which on the one hand works with surrounding heat sources and on the other hand with the The suction side of the refrigerant circuit is in heat exchange. This
Wasser-Wärmespeicher nimmt während des Dauerbetriebs je nach Jahreszeit eine Temperatur von ca. 0º bis 8 ºC an. Ersetzt man gemäß der Erfindung den an der Rückseite der üblichen Kühlmöbel befindlichen Kondensator durch ein einfaches, ausreichend lanqes Kupferrohr, welches in den genannten Wassertank eingetaucht wird, so ergibt sich dadurch eine im Vergleich zu bisherigen Methoden wesentlich geringere Kondensationstemperatur von ca. 5º bis 10 ºC, da die Umgebung, also der Inhalt des Speichers, eine sehr viel niedrigere Temperatur hat und außerdem ein wesentlich intensiverer Wärme- tausch stattfinden kann als beim üblichen Metall-Luft-Kontakt der herkömmlichen Kondensatorflächen. Water heat accumulator takes on a temperature of approx. 0º to 8ºC during continuous operation depending on the season. If, according to the invention, the condenser located on the back of the usual refrigeration units is replaced by a simple, sufficiently long copper tube which is immersed in the water tank mentioned, this results in a substantially lower condensation temperature of approximately 5 ° to 10 ° C. compared to previous methods , because the environment, i.e. the content of the storage, has a much lower temperature and also a much more intense heat exchange can take place than with the usual metal-air contact of the conventional capacitor surfaces.

Claims

P a t e n t a n s p r ü c h e: Patent claims:
1. Verfahren zur Nutzbarmachung einer durch Dieselmotor anget—riebenen Wärmepumpenanlage beim Betreiben von Wärme verbrauchenden Haushaltsgeräten, wie Waschmaschinen, Geschirrspülmaschinen und Wäschetrocknern, dadurch g ek e n n z e i c h n e t, daß die Wasser- bzw. Luftversorgung des Haushaltsgeräts in Wärmetausch mit1. A method for utilizing a heat pump system driven by a diesel engine when operating heat-consuming household appliances, such as washing machines, dishwashers and tumble dryers, in such a way that the water or air supply to the household appliance is exchanged with heat
- der Druckseite des Kältemittelkreislaufs der Wärmepumpenanlage,- the pressure side of the refrigerant circuit of the heat pump system,
- dem Kühlwasser des Dieselmotors und/oder - den Abgasen des Dieselmotors gebracht wird.- The cooling water of the diesel engine and / or - The exhaust gases of the diesel engine is brought.
2. Verfahren nach Anspruch 1, dadurch g e k e n nz e i c h n e t, daß die Wasser- bzw. Luftversorgung des Haushaltsgeräts zunächst aus einem Heißwasserboiler der Wärmepumpenanlage gespeist bzw. mit diesem in Wärmetausch geführt und dann mit den Abgasen des Dieselmotors in Wärmetausch gebracht wird, und daß seinerseits das Wasser des Heißwasserboilers in Wärmetausch mit2. The method according to claim 1, characterized geken nz that the water or air supply of the household appliance is first fed from a hot water boiler of the heat pump system or with this in heat exchange performed and then brought into heat exchange with the exhaust gases of the diesel engine, and that in turn the water of the hot water boiler in heat exchange with
- der Druckseite des Kältemittelkreislaufs der Wärmepum penanlage und/oder- The pressure side of the refrigerant circuit of the heat pump system and / or
- dem Kühlwasser des Dieselmotors gebracht wird.- brought to the cooling water of the diesel engine.
3. Verfahren nach Anspruch 1 oder 2, dadurch g e k e n n z e i c h n e t, daß das Haushaltsgerät mit der Wärmepumpenanlage gekoppelt wird, so daß diese in jedem Fall mit dem Wärme verbrauchenden Programmschritt des Haushaltsgeräts läuft.3. The method according to claim 1 or 2, characterized in that the household appliance is coupled to the heat pump system so that it runs in any case with the heat consuming program step of the household appliance.
4. Wärme verbrauchendes Haushaltsgerät , wie Waschmaschine, Geschirrspülmaschine und Wäschetrockner, dadurch g e k e n n z e i c h n e t, daß es anstelle von Heizelemen ten zum Aufheizen von Wasser bzw. Luft einen externen Wärme tauscher besitzt, in dem das aufzuheizende Wasser bzw. die aufzuheizende Luft in Wärmetausch mit4. Heat-consuming household appliance, such as a washing machine, dishwasher and tumble dryer, thereby g e k e n z e i c h n t that instead of Heizelemen th for heating water or air has an external heat exchanger in which the water to be heated or the air to be heated in heat exchange with
- der Druckseite des Kältemittelkreislaufs einer Wärmepumpenanlage, - dem Kühlwasser eines Dieselm-otors für den Antrieb der Wärmepumpenanlage und/oder- the pressure side of the refrigerant circuit of a heat pump system, - the cooling water of a diesel engine for driving the heat pump system and / or
- den Abgasen des Dieselmotors gebracht wird.- The exhaust gases of the diesel engine is brought.
5. Verfahren zur Nutzbarmachung einer Warmepumpen- anläge mit einem einerseits mit umgebenden Wärmequellen und andererseits mit der Saugseite des Kältemittelkreislaufs in Wärmetausch stehenden Wasser-Wärmespelcher beim Betreiben von Kühlmöbeln, wie Kühlschränken und Tiefkühltruhen, dadurch g e k e n n z e i c h n e t, daß der Kältemittel- Kondensator des Kühlmöbels in Wärmetausch mit dem Wasser- Wärmespeicher der Wärmepumpenanlage gebracht wird.5. A method for harnessing a heat pump system with a heat source on the one hand with surrounding heat sources and on the other hand with the suction side of the refrigerant circuit in heat exchange when operating refrigerators, such as refrigerators and freezers, characterized in that the refrigerant condenser of the refrigerator is in heat exchange is brought with the water heat storage of the heat pump system.
6. Kühlmöbel, wie Kühlschrank oder Tiefkühltruhe, g e k e n n z e i c h n e t durch einen Kältemittel-Kondensator zum Eintauchen in einen einerseits mit umgebenden Wärmequellen und andererseits mit der Saugseite des Kälte- mittelkreislaufs einer Wärmepumpenanlage in Wärmetausch stehenden Wasser-Wärmespeicher. 6. Refrigerated furniture, such as a refrigerator or freezer, characterized by a refrigerant condenser for immersion in one hand with surrounding heat sources and on the other hand with the suction side of the refrigeration middle circuit of a heat pump system in heat exchange water heat storage.
PCT/DE1979/000081 1979-08-10 1979-08-10 Utilization of a heat pump for the feeding of house hold appliances WO1981000442A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/DE1979/000081 WO1981000442A1 (en) 1979-08-10 1979-08-10 Utilization of a heat pump for the feeding of house hold appliances
EP79900957A EP0034141A1 (en) 1979-08-10 1981-02-24 Utilization of a heat pump for the feeding of house hold appliances

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
WODE79/00081 1979-08-10
PCT/DE1979/000081 WO1981000442A1 (en) 1979-08-10 1979-08-10 Utilization of a heat pump for the feeding of house hold appliances

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015788A1 (en) * 1995-10-27 1997-05-01 Mamzed, Jan Method and device for heating with the aid of a heat pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH121316A (en) * 1926-06-11 1927-07-01 Haelg Ferdinand Method and device for heating washing machines.
US2562748A (en) * 1950-02-17 1951-07-31 Muncie Gear Works Inc Heat pump
BE682989A (en) * 1965-07-24 1966-12-01
DE2161495A1 (en) * 1971-12-10 1973-06-20 Rhein Westfael Elect Werk Ag HEAT RECOVERY PLANT
DE2625157A1 (en) * 1976-06-04 1977-12-08 Bogner Und Huber Gmbh & Co San Heat recovery system from hot waste water - feeds storage from collector with heat exchanger and controlled drain valve
DE2633775A1 (en) * 1976-07-28 1978-02-02 Motorheizung Gmbh Motor driven heating unit and heat pump - uses exhaust heated water tank and insulation to return heat to system
DE2715075A1 (en) * 1977-04-04 1978-10-12 Helfried Crede Energy recovery system e.g. for ice rink - extracts heat by pump from water tank then reheats from surrounding sources
DE2728273A1 (en) * 1977-06-23 1979-01-04 Ruhrgas Ag IC engine drive for heat pump - has engine driven flow brake to compensate for compressor decrease

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH121316A (en) * 1926-06-11 1927-07-01 Haelg Ferdinand Method and device for heating washing machines.
US2562748A (en) * 1950-02-17 1951-07-31 Muncie Gear Works Inc Heat pump
BE682989A (en) * 1965-07-24 1966-12-01
DE2161495A1 (en) * 1971-12-10 1973-06-20 Rhein Westfael Elect Werk Ag HEAT RECOVERY PLANT
DE2625157A1 (en) * 1976-06-04 1977-12-08 Bogner Und Huber Gmbh & Co San Heat recovery system from hot waste water - feeds storage from collector with heat exchanger and controlled drain valve
DE2633775A1 (en) * 1976-07-28 1978-02-02 Motorheizung Gmbh Motor driven heating unit and heat pump - uses exhaust heated water tank and insulation to return heat to system
DE2715075A1 (en) * 1977-04-04 1978-10-12 Helfried Crede Energy recovery system e.g. for ice rink - extracts heat by pump from water tank then reheats from surrounding sources
DE2728273A1 (en) * 1977-06-23 1979-01-04 Ruhrgas Ag IC engine drive for heat pump - has engine driven flow brake to compensate for compressor decrease

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015788A1 (en) * 1995-10-27 1997-05-01 Mamzed, Jan Method and device for heating with the aid of a heat pump

Also Published As

Publication number Publication date
EP0034141A1 (en) 1981-08-26

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