WO1999013276A1 - Coupled power-heat device for supplying energy - Google Patents

Coupled power-heat device for supplying energy Download PDF

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Publication number
WO1999013276A1
WO1999013276A1 PCT/DE1998/002756 DE9802756W WO9913276A1 WO 1999013276 A1 WO1999013276 A1 WO 1999013276A1 DE 9802756 W DE9802756 W DE 9802756W WO 9913276 A1 WO9913276 A1 WO 9913276A1
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WO
WIPO (PCT)
Prior art keywords
heat
ƒ
da
hot
characterized
Prior art date
Application number
PCT/DE1998/002756
Other languages
German (de)
French (fr)
Inventor
Jörg HARTAN
Ingo Gatzke
Ralph Bahke
Original Assignee
Vng - Verbundnetz Gas Aktiengesellschaft
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
Priority to DE19740398.0 priority Critical
Priority to DE19740398A priority patent/DE19740398C2/en
Application filed by Vng - Verbundnetz Gas Aktiengesellschaft filed Critical Vng - Verbundnetz Gas Aktiengesellschaft
Publication of WO1999013276A1 publication Critical patent/WO1999013276A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B27/00Machines, plant, or systems, using particular sources of energy
    • F25B27/02Machines, plant, or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02GHOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02Profiting from waste heat of exhaust gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00Central heating systems using heat accumulated in storage masses
    • F24D11/02Central heating systems using heat accumulated in storage masses using heat pumps using heat-pumps
    • F24D11/0214Central heating systems using heat accumulated in storage masses using heat pumps using heat-pumps water heating system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/16Waste heat
    • F24D2200/18Flue gas recuperation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/16Waste heat
    • F24D2200/22Ventilation air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00Heat sources or energy sources
    • F24D2200/16Waste heat
    • F24D2200/26Internal combustion engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H2240/00Fluid heaters having electrical generators
    • F24H2240/10Fluid heaters having electrical generators with fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/20Adapting or protecting infrastructure or their operation in buildings, dwellings or related infrastructures
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/70Hybrid systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/50Systems profiting of external or internal conditions
    • Y02B30/52Heat 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/10Combined combustion
    • Y02E20/14Combined heat and power generation [CHP]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/16Energy recuperation from low temperature heat sources of the ICE to produce additional power
    • Y02T10/166Waste heat recovering cycles or thermoelectric systems

Abstract

The invention relates to a coupled power-heat device for heating, cooling and supplying buildings and installations with electric energy comprising an internal combustion engine (1), a generator (2) and a heat accumulator (4) to which a cooling accumulator (6) is assigned. Both accumulators (4, 6) are connected to one another via a heat pump (3), whereby the cooling accumulator (6) serves as a heat source for said heat pump (3). System modules which generate the heat energy having a relatively high thermal level are attached to the heat accumulator (4) and the modules which deliver the heat energy having a relatively low thermal level to the cooling accumulator (6).

Description

Combined heat-coupled device for supplying power

The invention relates to a power-heat-coupled device of small to medium power for supplying power to private and / or public buildings and institutions using primary energy from liquid or gaseous fuel, preferably natural gas.

Numerous facilities and equipment for energy supply of buildings with heat and electrical energy and for the treatment of warm water are already known from the prior art. The measures provided for heating, including hot water, air conditioning and power generation of buildings and equipment are usually installed separately and operated. This has the inevitable consequence that both the capital and operating costs, especially for the employed primary energies are high. From DE 42 03 491 Al an electronically controlled power supply unit is known, which is used for generating heat and electrical energy. The power supply unit comprises a generator for power generation, which is driven by an internal combustion engine. The heat energy is won from the exhaust gases of the engine and from the cooling water of the internal combustion engine by means of the heat exchanger and provided in a boiler. With the aid of a heat pump, which is driven by the internal combustion engine, residual heat is recovered from the engine exhaust gases and used for the heating of the boiler. The boiler can optionally also be heated by the generated electrical energy. The power supply unit to DE 42 03 491 AI does not have equipment for air conditioning of buildings and for the recovery of heat from the exhaust air. Renewable energy sources are not exploited.

A similar heating and power plant for the conversion of primary energy and ambient heat into electricity and useful heat proposes the DE-OS 40 06 742 AI. Core of the system is operated with a burner and a heated boiler burner having the same Stirling engine that drives a generator and a heat pump. The generator is preferably a linear generator, which can be electrically connected via a corresponding control to the drive motor of a heat pump, with the public mains or with other consumers. With the help of the heat pump and heat energy from the ambient heat to be recovered and made available for heating purposes. A subsystem for the air conditioning of buildings and facilities and to recover the heat energy from the air conditioning does not provide for this proposed solution. A combined system for producing electric energy by utilizing the waste heat from the power generation for home space heating is known from DE 44 34 831 AI. The electric energy is generated by a gas engine generator set, wherein a waste heat recovery pipe working as a heat source a heat exchanger is connected to the gas engine generator set. In the quellenseiti- gen heat exchanger, a heat carrier is heated and the vapor thus formed is supplied to the heat exchangers for the space heating. The liquefied vapor then flows back into the source-side heat exchanger of the gas engine-generator arrangement according to deliver its heat energy. According to a preferred embodiment of this system, a Absorptionskühlein- direction is additionally provided, which is integrated in a Umlaufröhrleitung. The circulation pipe is filled with a gas-liquid phase change heat subject agent. At this Umlaufröhrleitung heat exchangers are connected, which are used for cooling the building floors. The disadvantage of this device is, in turn, is that the system does not provide means for exploiting renewable energies.

From DE 41 02 636 Al is also known that the buffering in a combined heat and power plant coupled generated with the aid of a generator electric power in a battery. In addition to a greater independence from public power supply networks, the operating times of the system are reduced with this measure and the in-house supply of electrical energy can be better adapted to the respective requirements. The proposed system, which serves for the supply of domestic hot water and space heating, works exclusively with electric energy as the primary energy use and has no further equipment to use renewable energies and for heat storage. is particularly disadvantageous to view that greater amounts of heat that occur in peak hours, not used and must be released to protect the system.

A proposal for the integration of solar panels in a heating system, which is operated with fossil primary energy, is known from DE 26 91 774th The proposed heating system is also equipped with a liquid heat storage and heat pumps to achieve the highest possible efficient use of the heat generated by solar and primary energy. The heat energy generated by the solar panels is used in this system as far as possible only for heating purposes. Any further utilization of solar energy, for example in the year when the sun is not as strong, and the use of other renewable energy does not provide this facility.

The object underlying the invention is to develop an electronically controlled device of the aforementioned type for heating, cooling and power supply of buildings and facilities with renewable energies that can be realized with relatively low cost and investment costs and the required primary energy content of the heat further reduced and energy supply -.

According to the invention the object is achieved by the features indicated in claim 1. Advantageous further developments of the invention result from claims 2 to 10. With the coupling according to the invention a known basic modules and their specific coordinated interaction of a completely new quality in the utilization of the primary energy input is achieved, wherein the plant of the invention warm at the same time for heating, to generate industrial water and for air conditioning (cooling) can be used in buildings. The invention thus represents no addition or expansion of known power-heat-coupled systems, but a new, completely independent and environmentally friendly solution that has an extremely high efficiency. It combines a whole complex functionalities heating, power generation, water production and cooling while making efficient use of renewable energy in the environment.

The plant according to the invention, which in winter operation for generating heat and electrical energy from fossil fuels, such as gas or oil, is used, is used in summer operation for air conditioning of buildings and facilities for the preparation of domestic hot water at the same time generating electricity. Thus, no additional costs for air conditioning in summer operation necessary, with corresponding dimensions of the heating surfaces are to be considered only in the configuration, which serve as cooling surfaces during summer operation.

The installation of the invention can be used in all situations efficiently and thus the Primärernergieverbrauch be reduced where currently more conventional gas, oil or solid fuel heating systems are installed. The core of the inventive power-heat-coupled device is a heat accumulating in conjunction with an additional cold storage, which according to the invention with an internal combustion engine that drives a power generator, and with a heat pump, which is optionally formed as a compression or absorption heat pump, and solar devices for connected utilization of renewable energy sources and resulting from the use of primary energy waste heat.

Through the use of the two memories, the number of operating hours of the internal combustion engine can be designed with appropriate dimensioning of the entire system, that when properly maintained, a maximum service life is easily achieved with standard machines. The use of special and expensive combustion engines that need to be designed for continuous operation, will not be required. The integration of the heat pump system, it is even possible to use a low-cost air-cooled fuel engine for this application because the cylinder and housing waste heat can be used coupled to the storage system. The plant according to the invention, which is equipped with a temperature and taupunktgeführten scheme secures by the use of an efficient, electronic control, a highest possible utilization of renewable energy. The term of the power-heat-coupled devices and the consumption of primary energy can be reduced to a minimum due to the energy storage. In the internal combustion engine, which is coupled to a generator for generating electric power used and serves to drive the heat pump, a landed heat is supplied via the cooling system of the internal combustion engine to heat different levels of the hot or cold storage. With the help of heat exchangers is extracted from the exhaust gases, the cooling water and the engine oil of the internal combustion engine to heat a relatively high level part of the residual heat and is coupled to the further charging of the storage heater.

With the aid of a condensing capacitor is the already cooled exhaust gases more residual heat, including the heat of condensation removed due to the condensing effect and supplied to the cold storage at relatively low thermal levels.

According to an essential feature of the invention, the internal combustion engine-generator unit is thermally encapsulated in a sound- and heat-insulated housing. The resulting waste heat in the housing is coupled by an air-water heat exchanger to heat a low level in the cold storage and can thereby be used also. These energies are the source for the heat pump.

Through the invention is thus ensures an almost complete use of the waste heat from the plant, which the cogeneration plant (CHP) principle, including the utilization of the condensing effect equivalent.

Via the cold storage to which a recooler for recovering heat from the ventilation system of a building, a heat exchanger for the utilization of waste water residual heat and during the winter operation, the solar panels are connected on the primary side, are with the heat pump, which would be the heat accumulating the cold storage connects etechnisch, heat energy from the environment, which have a relatively low level, exploited and fed with a higher thermal level in the hot memory for preparation of hot water for heating and domestic hot water. the effect of number of power-heat-coupled device according to the invention is due to the plant by the use of the heat pump is increased to the effect that a multi of usable heat and electrical energy is provided as the primary energy used includes.

This effect results from the coupling of the environmental energy from the solar energy system in combination with the heat pump.

The invention will be explained in more detail below using an embodiment. The accompanying drawing shows a schematic representation of the power-heat-coupled heating, cooling and power supply device.

As is apparent from the drawing, the heating, for air conditioning (cooling), for the generation of electric energy and primary energy used domestic hot water, in the present embodiment, preferably natural gas, is supplied in a known way an internal combustion engine 1, for example a gas motor or a turbine , which drives a generator 2 to generate electric power. Internal combustion engine 1 and generator 2 are housed in a sound- and heat-insulated housing 36 with a feed air inlet and outlet 37; 38 is provided for cooling purposes. To the generator 2 for driving the pump 3, the home network 34 are connected to the electric power supply and the public network via the E-E network connection 32nd The terminal connection to the public e-network is the interposition of counter units 15 for the reference and for the return / supply of electric energy.

The generator 2 is preferably designed as an asynchronous machine, which is rigidly connected to the internal combustion engine. 1 This variant offers the advantage that the generator can be used as a drive for starting the internal combustion engine 1 and waives elaborate network synchronizations. For generators of large capacity, a so-called soft start circuit may be necessary. The use of synchronous and DC generators is of course possible and, among other things makes sense when one island operational driving, the electric power supply system is intended.

After starting the internal combustion engine 1 is high at the rated speed of the motor corresponding to the applied mains frequency. At loads of the engine by increasing the primary energy supply over-synchronization of the generator 2 is performed, and it is current fed in the connected network. The load of the internal combustion engine can be regulated so that the generator operates at its nominal output by measuring the power. This state is the nominal operating point in the generation of electric energy and waste heat.

34 is consumed electric power during the generator operation in the parallel-connected home network, so that power is supplied directly from the generator 2 and need not be subject to charges removed from the public E-net. Through the use of the hot memory 4 the duration of the means for generating electric energy may be controlled such that it always operates when the electric power consumption in the building or in the public network is given.

In principle, instead of the engine-generation, the use of a fuel cell rato purity possible without that the downstream equipment and operating principles thus change substantially.

Due to the intermittent operation of the system of the invention, it is useful and economically storing electric energy generated intermediate states. According to the present embodiment, the alternating current generated by the generator 2 is rectified in a photovoltaic system 16 and supplied to a plant 16 in the integrated battery system in which a storage of the electric energy takes place. The so stored for own consumption electric power is supplied by the inverter as ac voltage via the E-network terminal 33 and the switching device 40 in the home network 34th In addition, the photovoltaic system 16 is connected to the public e-network.

The Solarpa- included in the photovoltaic system 16 nele complement the use of renewable energy in a known manner.

Besides the known use of a hot memory 4, an additional cold storage 6 is part of the power-heat-coupled device according to the invention. This cold storage 6 serves on the one hand as a heat supplier of the evaporator of the heat pump 3 in heating mode during the winter operation, and as a cooling agent in the cooling mode in the air conditioning of buildings in summer mode.

To the cold storage 6, which is connected via the heat pump 3 to the hot memory 4, the primary side the solar collectors 13, the calorific value capacitor during the winter operation 42 and the cooling system 10 of internal combustion engine 1 and generator 2 by means connected to the lines. 5

A heat exchanger for utilizing the waste heat from the exhaust air re-cooling of the building 27 is also connected to the cold storage. 6 All of the aforementioned modules provide Warmeernergie having a relatively lower thermal level of the cold storage 6, which forms the heat energy source for the heat pump. 3

In addition, a heat exchanger is in the cold store 6 with a waste water heat recovery 20, which has naturally a waste port 19 and an overflow 31 to the sewage system, and via the valve 11 for the selectable switch to summer and Winterberieb with the floor heating 28, and the heating / heat sinks 29 of the building, respectively. Advantageously, the cold storage 6 is also provided with a connection 7 for an additional cooling circuit.

Warm to the memory 4, which is preferably designed as a stratified storage tank, the exhaust system of the internal combustion engine 1 and in the summer months, the solar collectors 13 are connected to its charging with heat energy through the lead wires 8 on the primary side. Through the leads 45 of the oil cooler of the internal combustion engine 1 is also connected to lead wires 8, and thus directly coupled to the hot storage. 4 the condenser of the heat pump is used 3. An alternative heat generating means in the form of a conventional gas burner as another heat source for the heat accumulating 4 39 (redundancy) completes the installation of the invention.

On the secondary side of the flow 21 of the Heizungsinstalla- functions are provided on the hot memory 4 via a mixer 18, which during summer operation for cooling the same, respectively. serve air conditioning, and connected the cables for the domestic water connection 25th

The flow 21 of heating installations is connected with the cold storage se- kundärseitig 6 during the summer operation for the air conditioning of rooms, the recooling 27 is connected to the heat recovery from the exhaust air of the building to the in Winterberieb. The transition to summer and winter operation, with the aid of the switching valves 11; 12 and the valves 41, 42 and 43 realized, all of which are driven by means of the electronic control unit. 9

For the eventual malfunction of the internal combustion engine 1 is provided as alternative heat generating means in the exhaust passage of the internal combustion engine 1, which has an exhaust stream switch 35 to summer and winter operation, provided a gas burner 39 in communication with exhaust gas heat exchanger 24 for charging the hot memory 4 directly through the connection lines 8 is connected with this.

On the secondary side is connected to the hot storage mixer 18 4 the external temperature is carried out in a particular manner dependent control of the heating runnings 21. Contrary to the generally customary processes, the mixer 18 is operated not only three, but with a plurality of connection points. These are upstream of the hot water port from the upper region of the hot memory 4, the hot water supply from the middle region of the hot memory 4 and the return of the heating system 14 and the output side of the flow 21 of the heating system. With the aid of the electronic control unit 9 the automatic changeover between the input strands for control of the supply temperature. Thus, in Vorlauftem- temperatures up to the central temperature of the hot memory 4 of the heating / cooling flow 21 operated in the central storage area in connection with the cooler return fourteenth If the target value of the outside temperature compensated control over the temperature in the storage means range, the admixture is suspended from the return fourteenth The admixture is then carried out from the upper portion of the hot memory 4 with hot water. This special arrangement of the input currents to the mixer 18, the consumption of hot water is minimized and thus the Syste Calls greatly reduced for the recharging of the hot memory. 4 This effect is the life of the internal combustion engine 1 directly benefit.

The return flow 14 of the heating equipment is the hot memory 4 is supplied at the lowest position and 4 to achieve in this way supports the thermal stratification in the storage order as low as possible return temperatures, are according to the invention in the heating / cooling return flow 14 of the building, for example, a floor or surface heater 28 and a preheater 26 for heating of the incoming fresh air of the ventilation system. Within the hot heat exchanger memory 4 are provided, through which the warm service water in the lower part of the hot memory 4, as described above, preferably formed as a stratified storage tank, is preheated. Thereby, the desired cooling of the hot memory 4 is supported on the one hand in this memory area, while minimizing the heat removal in the upper hotter memory area. A downstream easier thermal mixer 30 is used to set the desired final temperature of the prepared hot utility water.

A significant advantage of the force-coupled device according to the invention heat is that for heating purposes the proposed system without requiring additional apparatus or system-side changes in the cold seasons and can be used effectively during the summer operation for air conditioning / cooling of buildings and facilities. In summer mode, the medium (water) contained in the cold storage 6 is cooled down to approximately 0 ° C by means of the heat pump. 3 This cold water is through switching valves 11; 12 fed and for the Kühlberieb in summer and for the heating operation in the winter the mixer 18 bit mixed to a temperature above the dew point of the air in to be cooled rooms and on the cooling / heating surfaces 29 and possibly the underfloor 28 and the respective rooms to cooling supplied. It is thus effected by the existing heating system, the cooling of the rooms without additional plant-genseitige expenses are required. Existing ventilation and air conditioning systems to be integrated accordingly in this cycle. A further advantage is that when using an absorption machine the transported in the summer by the solar collectors 13 in the heat accumulating thermal energy 4 can be exploited for cooling as a heat pump. 3 The energy source of the absorption chiller is then charged hot memory. 4

The integrated in the inventive device solar panels 13 serve two purposes. The direct connection of the solar panels 13 to the hot memory 4, the solar energy is used in the summer operation directly for the preparation of domestic hot water and, if necessary for the preparation of hot water for heating purposes. This arrangement corresponds to the well known classical application of solar systems in a temperature range above 50 ° C.

Especially in the colder months, however, the solar energy in general is no longer sufficient to heat the heat transfer from the solar panels 13 to the desired temperature level of above 50 ° C. In conventional systems, the collectors are therefore utilized only partly in the winter period.

In the inventive device 6 Collector flow temperatures of the solar collectors 13 of substantially less than 50 ° C can be used year-round efficiently using the heat pump 3 in connection with the cold storage by the relatively low temperature level of the solar collectors 13 in the cold season the still colder heat carrier in the cold storage 6 is supplied via a heat exchanger. It is done by a heat transfer at a relatively low temperature level from the environment in the cold storage 6. With the aid of the heat pump 3 is raised, this heat energy to a usable thermal level of about 50 ° C and the hot memory 4 is supplied as already described. Thus, it is largely possible to dispense with other environmental heat supplier for the operation of the heat pump 3, as is the case for example with classic heat pump systems for the utilization of heat energy from earth, water or air heat with a correspondingly high equipment and financial resources. the furnishing of the invention differs fundamentally from known facilities and systems, while minimizing the system-side effort by rigorously continuous use of solar panels 13 both in summer and in winter. The switch to summer and Winterberieb is again using the switching valves 22; 23 made.

REFERENCE NUMBERS

1 internal combustion engine

2 generator

3 heat pump

4 hot storage

5 line

6 cold storage

7 connection for additional cooling circuit

8 lead

9 electronic control unit

10 cooler

11 reversing valve

12 reversing valve

13 solar collector

14 return

15 counter unit

16 photovoltaic system

17 -

18 mixer

19 sewer

20 wastewater buffer

21 heating / cooling flow

22 valve 23 change-over valve

24 exhaust gas heat exchanger

25 domestic water connection

26 Zuluftvorwärmung

27 air recooling

28 floor heating

29 heating / cooling surfaces

30 water thermostat

31 sewage spill

32 E-E-mains power supply terminal house exhaust flow switching housing Supply exhaust gas burners switching valve condensing capacitor valve valve connection line

Claims

Patentanspr├╝che
Wärme force-coupled device for heating, Kühlen and for supplying power to Gebäuden and equipment using fossil Primärenergie and use of solar energy comprising an internal combustion engine and a generator driven, of a W for the operation ärmepumpe serves and is connected to the home network of the Gebäudes öffentlichen and the supply network for supplying electrical energy and a disposed in the exhaust passage of the internal combustion engine Wärmetauschers, the connected together with a solar collector primär- side to a Wärmespeicher is connected to the sekundärseitig stungen the to be supplied with hot water and Wärmeenergie Gebäudeauεrü-, characterized in daß the hot memory (4) is associated with a cold storage (6) and both memory (4; 6) are coupled with each other wärmetechnisch über a Wärmepumpe (3), said conditioning modules Wà generate rmeenergie having a relatively high thermal level, the heat store (4) and system modules that provide Wärmeenergie with a lower thermal level to which the cold storage (6) as für Wärmequelle the Wärmepumpe ( 3) is used, are connected.
2. Device according to claim 1, characterized in that the exhaust gas system of the internal combustion engine da├ƒ (1), the K├╝hlsystem (10) of the internal combustion engine (1) and generator (2) and in summer operation, the Sollarkollektoren (13) prim├ (20; 27; 42) to the hot ñrseitig memory (4) and system modules for R├╝ckgewinnung and recovering from the W├ñrmeenergie Geb├ñudeabluft, the waste water and of the winter operation w├ñhrend from the Sollarkollektoren (13) and the K ├╝hlsystem (10) of the internal combustion engine (1) and the generator (2) are prim├ñrseitig connected to the cold storage (6).
3. Device according to claim 1 and 2, characterized in that the hot daß memory (4) and the cold accumulator (6) layers of the memory.
4. Device according to claim 1 and 2, characterized in that daß in the exhaust passage of the internal combustion engine (1) as an alternative Wärmeerzeugungseinrichtung a gas burner (39), which is coupled directly to the hot primärseitig memory (4), and a exhaust flow switching (35) are provided to summer and winter operation.
5. Device according to claim 1 and 2, characterized in that the waste water line (19) of the daß Gebäudes to a sewage temporary storage (20) is connected and the memory (20) with a Wärmeübertrager in cold storage (6) connected is.
6. Device according to claim 1 and 2, characterized in that a daß Zuluftvorwärmung (26) for conditioning the supply air of the Lüftungsanlage Gebäudes in the Rücklauf (14) of the Hei MENT / Kühlinstallationen (29; 28) is coupled.
7. Device according to claim 1 and 2, characterized in that in the daß Lüftungsanlage of Gebäudes a Abluftrückkühlung (27) and integrated wärmetechnisch to the cold accumulator (6) is coupled.
8. The device according to claim 1, 2 and 7, characterized in that daß in the heating / Kühlungs- flow (21), a mixer (18) is switched on and to the mixer (18) eingansseitig the hot store (4) , ation with one Anschluß in the upper region of the hot and Mittlerer memory (4), the Rücklauf (14) of the heating / Kühlungsinstall- (28; 29) and the Abluftrückkühlung (27) of Gebäudes are connected.
9. The device according to one of Ansprüche 1 to 8, characterized in that daß switching to summer or winter mode by switching valves (11; 12; 22; 23) (in the line connections of the respective system modules for hot or cold storage 4; 6) are provided and carried out the exhaust gas flow switch (35) and the valves (11; 12; 22; 23) and the switching
(35) are controllable ├╝ber the electronic control unit (9).
10. The device according to one of Ansprüche 1 to 8, characterized in that daß switching to the heating mode or Kühlen by the switching valves (11; 12) (41; 43; 44) and valves are are turned on the über the mixer (18) in the heating and Kühlungsvorlauf (21), said valves (41; 43) and the switching valve (12) with the hot store (4), the valve (44 ) (with the Rücklauf (14) and the Abluftrückkühlung 27) and the switching valve
(11) are connected with the cold accumulator (6) and the Abluftr├╝ckk├╝hlung (27).
11. The device according to one of Ansprüche 1 to 10, characterized in that the internal combustion engine (1) and the generator (2) daß by a fuel cell with an electronic inverters are replaced.
PCT/DE1998/002756 1997-09-09 1998-09-09 Coupled power-heat device for supplying energy WO1999013276A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19740398.0 1997-09-09
DE19740398A DE19740398C2 (en) 1997-09-09 1997-09-09 Combined heat-coupled device for supplying power

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AU10222/99A AU1022299A (en) 1997-09-09 1998-09-09 Coupled power-heat device for supplying energy
EP98952574A EP1012513A1 (en) 1997-09-09 1998-09-09 Coupled power-heat device for supplying energy

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WO1999013276A1 true WO1999013276A1 (en) 1999-03-18

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AU (1) AU1022299A (en)
DE (1) DE19740398C2 (en)
WO (1) WO1999013276A1 (en)

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EP2784401A1 (en) * 2013-03-27 2014-10-01 Aisin Seiki Kabushiki Kaisha Hot water supply apparatus

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DE19740398C2 (en) 1999-12-02
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AU1022299A (en) 1999-03-29

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