DE102009039839A1 - Motor vehicle comprises engine, and cooling system for cooling engine, where stationary heating system is provided, which is connected to structure - Google Patents

Abstract

The motor vehicle (1) comprises an engine (5), and a cooling system (11) for cooling the engine. A stationary heating system is provided, which is connected to a structure. The energy in the form of heat is introduced into the stationary heating system of the motor vehicle. The motor vehicle produces electrical energy by an onboard or externally arranged electrical generator (19). An independent claim is also included for a structure, particularly with a garage for a motor vehicle.

Description

The invention relates to a motor vehicle with an engine and a cooling system, in particular the engine cooling.

A motor vehicle is here understood to mean a mobile means of transport, which can preferably be used for the transport of goods and / or persons. The motor vehicle may have two, three, four or more wheels and may be designed as a car, truck, ATV, quad, motorcycle, scooter, etc. Modern automotive engines are extremely efficient and use the fuels with a very high efficiency.

Heaters or heating systems for heating buildings or building rooms are known from the prior art. For heat generation often combustible fuels are burned in the heaters. Among other things, natural gas, liquid gas, biogas, heating oil, coal, wood or vegetable oil can be used for this purpose.

The invention has for its object to provide a vehicle that is also extremely economical as a heat energy supplier and / or supplier of electrical energy for buildings can be used in addition to its intended use.

This object is achieved with a vehicle having the features of claim 1 or 2. Advantageous developments of the vehicle according to claim 1 or 2 result from the features of the claims 1 or 2 back claims.

The invention is based on the idea that the modern motor vehicles extremely economical burn the fuel and often achieve a higher efficiency than heating or hot water systems of buildings. According to the invention, the heat energy emitted by the engine is now to be used for warming up a fluid of a fluid circuit of the building. For this purpose, the motor vehicle can be placed in or next to the building. Advantageously it is parked in a garage. Subsequently, the fluid circuit of the motor vehicle, which may advantageously be the cooling circuit, via z. As hoses or rigid pipes to a network of the building or directly coupled to a heat exchanger of the building. Via the heat exchanger, the heat energy of the vehicle is transferred to a fluid of a fluid circuit of the building. The cooled fluid of the motor vehicle is then heated again by the engine and is passed through the heat exchanger again. However, the heated fluid can also be passed directly into a buffer storage as a "stand-alone" heater. The fluid circuit of the building may be part of the primary circuit of the heating and / or hot water system of the building. However, it may also be a separate circuit that serves to heat the hot water tank and / or the heating water of the building.

In a further embodiment of the invention, the heat energy of the building is used to preheat the motor vehicle so that it can already work optimally at the start.

In addition to heat energy, the vehicle can generate electrical energy that is routed to the building or fed into the utility grid. It is also possible that the motor vehicle mechanically drives an electric generator which is arranged in or on the building or is already installed in the motor vehicle at the factory.

Today's combustion engines work very efficiently. For this reason, the internal combustion engine can very economically drive a generator for generating electrical energy. The generator can be arranged in the vehicle or externally from the vehicle, in particular in the building, arranged. The residual heat emitted by the internal combustion engine, which is dissipated in particular via the vehicle's own cooling system and via the exhaust gases, can be advantageously used for heating the building heating system or the hot water storage tank of the building. For this purpose, additional heat exchangers or heat pumps are to be provided. In order that the best possible efficiency is generated, in addition, the waste heat produced by the vehicle and / or the heat energy of the hot exhaust gas by means of heat exchangers or directly from the room, for. As the garage, with an air heat pump or indirectly with other heat pump types for warming up the building or its hot water tank can be used.

Likewise, it may be necessary to safely pass the exhaust gases produced by the motor vehicle out of the building or the garage so that there is no danger of poisoning. Advantageously, the exhaust gas can also be supplied to a heat exchanger by means of such a device. Also, an additional filter device can be provided with the help pollutants are removed from the exhaust more effectively than is possible with the installed in the motor vehicle catalysts and filters.

The internal combustion engine of the vehicle can also be operated or installed with appropriate interpretations of buffer storage as a "stand-alone" heating system and power generator in the public grid, for. B. in new buildings.

By suitable control and communication devices, the motor vehicle can be controlled by the control device of the building, so that only when needed and / or at certain times by the motor vehicle heat and / or electrical energy is generated.

An internal combustion engine is understood to mean a heat engine which converts chemical energy of a fuel or fuel into mechanical work by combustion. As fuel or petrol, a gasoline fuel, a diesel fuel, vegetable oil, LPG, methane, alcohol, hydrogen or the like can find application.

Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

Show it:

1 a schematic view of an inventive arrangement comprising a motor vehicle according to the invention and a heating system of a building;

2 a schematic view of an inventive arrangement comprising a motor vehicle according to the invention according to a second embodiment and a heating system according to the invention;

3 a schematic view of an inventive arrangement comprising a motor vehicle according to the invention according to a third embodiment and a heating system according to the invention;

4. : Building with vehicle according to the invention.

The 1 shows a possible embodiment of an inventive arrangement consisting of the motor vehicle according to the invention 1 and an external heating system 2 that communicate with each other. The vehicle 1 is mobile in a conventional manner, while the heating system 2 stationary or immovable. The heating system 2 is installed in a building G as it is in 4. is shown. In 1 is just an example of an exterior wall 3 of the building G shown. The building G has at least one room W and can be entered. It may be a residential building, an office building, a department store, a public building, a factory hall, a workshop or the like. The vehicle 1 and the heating system 2 can also be used separately, ie independently of each other.

First, the vehicle 1 in one of the heating system 2 separate state described. In the embodiment, the vehicle 1 a fully functional passenger car, a body 4. a landing gear, one in the engine compartment 6 arranged internal combustion engine 5 , Vehicle electrics or electronics, a passenger compartment 7 with front windshield 8th and rear window 9 , as well as side doors 10 having. The vehicle 1 can also be a truck, motorcycle, ATV, quad or ship.

The vehicle 1 also includes an internal combustion engine cooling system 11 that in the operation of the internal combustion engine 5 generated heat from the internal combustion engine 5 can dissipate. The internal combustion engine cooling system 11 is the internal combustion engine 5 assigned and is in the engine compartment 6 accommodated.

The internal combustion engine cooling system 11 includes a front of the vehicle 1 attached vehicle radiator 12 when driving the vehicle 1 resulting wind is exposed. The vehicle radiator 12 and the internal combustion engine 5 Stand over a vehicle coolant supply line 13 and a vehicle coolant discharge pipe 14 in fluid communication with each other. A fluid as a cooling liquid, preferably a mixture of distilled water and antifreeze, is running with the internal combustion engine 5 in conventional use of the vehicle 1 through the vehicle radiator 12 and the internal combustion engine 5 guided. Downstream of the vehicle radiator 12 is the coolant supply line 13 arranged over which the heatable coolant from the vehicle radiator 12 in the internal combustion engine 5 , in particular in the cylinder head and engine block, can be performed. The during operation of the internal combustion engine 5 generated heat is at least partially from that produced by the internal combustion engine 5 taken promoted coolant, so that the cooling liquid heated there. The heated coolant is then passed over the coolant drain line 14 from the internal combustion engine 5 back in the vehicle radiator 12 led to cooling. The coolant drain line 14 is located upstream of the vehicle radiator 12 ,

The internal combustion engine 5 , the vehicle radiator 12 , the coolant supply line 13 and the coolant discharge line 14 together form a closed cooling liquid circuit, in which an electric or mechanical, and / or belt-driven feed pump or water pump is integrated to promote the cooling liquid. In the coolant circuit there is a slight overpressure, so that when the internal combustion engine 5 a maximum coolant temperature of about 120 ° C is achievable.

To the vehicle radiator 12 Front are a vehicle coolant drain port 15 and a vehicle coolant return port 16 connected - when the vehicle 1 separate from the heating system 2 is used - are sealed liquid-tight by appropriate caps. The vehicle coolant drain port 15 goes from an upstream entrance area 17 of the vehicle radiator 12 out. In the entrance area 17 of the vehicle radiator 12 also opens the coolant discharge line 14 , The vehicle coolant return port 16 is in contrast in a downstream exit region 18 of the vehicle radiator 12 connected; the coolant supply line 13 is also in the exit area 18 to the vehicle radiator 12 connected. The entrance area 17 of the vehicle radiator 12 is located upstream of the exit area 18 ,

With the internal combustion engine running 5 the coolant enters the inlet area 17 at a temperature higher, preferably substantially higher, than in the exit region 18 is. The cooling liquid thus cools between the input area 17 and the output area 18 from. The caps prevent the coolant from escaping from the coolant circuit.

The coolant supply line 13 and the coolant discharge line 14 are preferably formed as hoses, while the vehicle coolant discharge port 15 and the vehicle coolant return port 16 are each formed as a nozzle. The vehicle coolant drain port 15 and the vehicle coolant return port 16 are accessible from outside. But they can also be mounted alternatively under the hood or on the side of the vehicle.

To the vehicle 1 is an external, electric generator 19 connectable to power generation. In the electric generator 19 kinetic energy is converted into electrical energy. The generator 19 has a rotor that runs when the internal combustion engine is running 5 can be driven by this rotating. The rotor of the generator 19 For example, by the then rotating crankshaft of the engine 5 are driven. Alternatively, the rotor of the generator 19 indirectly via the crankshaft of the internal combustion engine 5 , through one by the internal combustion engine 5 driven pulley, or by a mechanical or hydraulic coupling, by flanges, on the wheel, on the gearbox outlet or on the cardan shaft.

The heating system 2 includes a closed heating circuit 20 in which a liquid, heatable heating means, in particular water and / or frost protection, is guided. In the heating circuit 20 at least one heating surface or at least one radiator is arranged, which is or can be heated by the heating means. The heating system 2 is housed in a building or building room. The heating surface or the radiator is also located in a building room and can give off heat to the building space to be heated for heating the same. To promote the heating medium in the heating circuit 20 an electric pump is provided. Eventually, the circuit can also be taken over by the vehicle's existing water pump.

A heat exchanger 21 is via a first connection line 22 and a second connection line 23 to the heating circuit 20 connected so that the heating means the heat exchanger 21 can flow through. There may also be several heat exchangers 21 be provided. These can then be connected in parallel or in series.

The heating system 2 has a heating system coolant reception port 24 and a heating system coolant dispensing port 25 , which are designed as corresponding nozzle. The coolant reception port 24 and the cooling liquid discharge port 25 penetrate the outer wall 3 of the building and stand out from it. They can be designed as flexible hoses to connect the parked motor vehicle with the heating circuit quickly. They are liquid-tightly closed by means of appropriate caps when the vehicle 1 not connected.

The coolant reception port 24 and the cooling liquid discharge port 25 Stand over a coolant line 26 in fluid communication with each other, which is part of the heat exchanger 21 is and runs in this. The connection line 22 and the connection line 23 On the other hand, there is a heating medium line 27 in fluid communication with each other, which is part of the heat exchanger 21 is and runs in this. The coolant line 26 and the heating medium line 27 extend in the heat exchanger 21 over a longer distance adjacent to each other. Of course, any type of heat exchanger, such. As a plate heat exchanger or heat exchanger with heating coil can be used.

The vehicle 1 can be connected to the external heating system 2 be coupled. This is the vehicle coolant drain port 15 of the vehicle 1 to the coolant receiving port 24 of the heating system 2 to join, while the vehicle coolant return port 16 of the vehicle 1 to the coolant discharge port 25 of the heating system 2 is to be connected. For the corresponding compounds liquid-tight quick-release closures are provided. Before the connections mentioned, the corresponding caps must be removed.

The vehicle 1 Can be connected when the internal combustion engine is running 5 as a heating source for the heating system 2 be used. The vehicle 1 is in a stationary park state. As already mentioned, when the internal combustion engine is running 5 via the coolant drain line 14 heated coolant in the input area 17 of the vehicle radiator 12 guided. The heated coolant can with open vehicle coolant drain port 15 and coolant receiving port 24 on the one hand directly through the vehicle radiator 12 to the exit area 18 of the vehicle radiator 12 and the other about the heating system 2 flow, the heat exchanger 21 is flowed through. The heated cooling liquid then flows from the input area 17 according to the flow arrows K over the vehicle coolant discharge port 15 and the coolant receiving port 24 through the coolant line 26 and via the coolant discharge port 25 and the vehicle coolant return port 16 in the exit area 18 of the vehicle radiator 12 if all connections 15 . 16 . 24 . 25 are unlocked or open. Alternatively, the cooling liquid can only via the heating system 2 flow, leaving the vehicle radiator 12 is virtually no longer flowed through. In the flow of the coolant along the coolant line 26 gives the guided there cooling liquid heat to the adjacent arranged heating medium line 27 so that the heating medium conducted there is heated while the coolant cools down. The heated heating medium then passes through the connection line 22 in the actual heating circuit 20 in which the heated heating medium is conducted to the corresponding heating surfaces or radiators and gives off heat there. The cooled heating medium is then sent via the connection line 23 back to the heating medium connection line 27 led, where the heating medium can be reheated. Again, any type of heat exchanger can be used. A mixing of the vehicle coolant and the heating system heating means does not take place due to the separate circuits. If the vehicle 1 to the heating system 2 is connected, the coolant circuit of the vehicle 1 almost the coolant line 26 and the connections 24 . 25 extended. The internal combustion engine 5 will if the vehicle 1 to the heating system 2 is connected, so regulated that it shuts off when the cooling liquid reaches a certain temperature in the vehicle coolant discharge line 14 exceeds. It does not turn on again until the temperature of the coolant in the vehicle coolant drain line 14 a certain temperature falls below enough heat for the heating system 2 to deliver.

In the heating system 2 Caches can be integrated, which can store the heated heating medium. It may also be provided buffer memory, which are filled with water. The water stored in the buffer tanks can be heated directly via the heated vehicle coolant through at least one heat exchanger. If the vehicle 1 thus no longer to the heating system 2 is connected, is still available for several days, or depending on the size of several weeks, heated heating medium or hot water available. The hot water can then be used for all applications in the building, which usually require hot water. The hot water can be used, for example, for showering and / or bathing, laundry washing, dishwashing, cooking, etc. The heating system 2 but can also be operated in addition to solar energy, geothermal, air brine or water-water heat pumps, etc.

It is particularly advantageous when a variety of buildings with the heating system 2 Is provided. For example, the vehicle 1 also be connected to buildings of third parties, so that the operator of the vehicle 1 from the third party can receive a corresponding remuneration. After the internal combustion engine 1 can be operated almost permanently, eliminating wear-intensive cold starts, which also lead to increased fuel consumption. In addition, the production and purchase of separate heating system heating sources, such as burners or gas baths, no longer required because of the internal combustion engine 5 also as the sole heating source for the heating system 2 can be used. This leads to a huge cost savings, as they no longer have to be purchased separately. In addition, the environment is relieved, as the conventional heating system heat sources 2 no longer need to be made. The internal combustion engine 5 thus has a 3-fold function: on the one hand it serves as a drive for the vehicle 1 on the other hand it serves as a heating source for the heating system 2 and thirdly, it generates power to feed it into the public network or into one or more buildings to consume it in-house, and / or to charge the in-vehicle electrical system battery or any in-vehicle hybrid batteries.

Conventional vehicles can with the vehicle heating connection according to the invention. and / or power generation unit retrofitted. The vehicle heating connection and / or power generation unit may also be pre-installed ex works. Corresponding factory preparations for this can also be provided. The same applies to the heating system 2 ,

The arrangement after 2 differs from the arrangement 1 by the design of the internal combustion engine 5 and the power generator 19 , Otherwise, there are no differences, so that reference is made to the previous execution. Unlike the internal combustion engine 5 of the vehicle 1 according to 1 here is the generator 19 directly on the combustion engine 5 in the vehicle 1 attached. Between the generator 19 and the internal combustion engine 5 is also still the existing vehicle transmission anyway 28 shown schematically. The two 3-way valves 29 . 30 of the 3 However, could also on the internal combustion engine with factory installed, flanged electric motor - as in 2 shown - operated.

The embodiment according to 3 differs from the embodiment according to 1 essentially by having two valves 29 . 30 are arranged in the cooling liquid circuit to control the flow of the cooling liquid and to bypass the on-board radiator. Reference is thus made to the previous embodiment. The valves 29 . 30 are designed as 3-way valves. They are each between the internal combustion engine 5 , the vehicle radiator 12 and the connection 15 respectively. 16 ,

The valve 29 is in the coolant drain line 14 arranged. It has three connections, namely the connections 31 . 32 . 33 that can converge and communicate with each other. The connections 31 . 32 are located in the coolant drain line 14 , where the connection 32 with the entrance area 17 of the vehicle radiator 12 is in direct flow communication. The connection 31 is upstream of the terminal 32 intended. The connection 33 is to the coolant drain port 15 connected. Through the valve 29 the flow of cooling liquid can be specified. If the vehicle 1 not to the heating system 2 is connected for heating purposes, is the connection 33 closed so that the coolant does not enter the coolant drain port 15 can enter or the vehicle 1 can leave. The connections 31 . 32 on the other hand are open, so that the coolant through this the coolant discharge line 14 can flow through. If the vehicle 1 to the heating system 2 connected is the connection 32 closed, so that the coolant is no longer in the vehicle radiator 12 can get. The connections 31 . 33 are then open, allowing the coolant through them into the coolant drain port 15 can flow. Alternatively, here is the connection 32 also be at least partially open so that the coolant is also in the vehicle radiator 12 can flow. For closing and opening the respective connections 31 . 32 . 33 is a corresponding blocking means in the valve 29 intended. The blocking means can be done manually or automatically.

The valve 30 is identical to the valve 29 is formed and located in the coolant supply line 13 , It has three connections 34 . 35 . 36 which can converge and be in fluid communication with each other. The connections 34 . 35 are located in the coolant supply line 13 , where the connection 34 with the output area 18 of the vehicle radiator 12 is in direct flow communication. The connection 35 is downstream of the terminal 34 arranged. The connection 36 is to the vehicle coolant return port 16 connected. When the coolant through the vehicle radiator 12 is guided, so are the connections 34 . 35 open while the connection 36 closed is. The coolant can thus through the connections 34 . 35 the coolant supply line 13 but not by connection 36 flow through. When the cooling liquid on the other hand, through the heating system 2 The connections are 35 . 36 open while the connection 34 closed is. The coolant can then pass through the ports 35 . 36 stream. Also the valve 30 has a corresponding operable blocking means. Also at the connections 24 . 25 appropriate stop valves may be provided.

The 4. shows a building G with a garage GA and an overlying residential area W. The cooling circuit of the parked in the garage motor vehicle according to the invention 1 is by means of the wires 15 . 24 and 16 . 25 connected to the heating system H _z . The heating system H _z includes the in the 1 to 3 With 21 designated heat exchanger. The radiators R and / or the floor heating FBH of the living area W are via lines 46 connected to the heater H _z . However, this can also be operated directly monovalent on a buffer storage heater PSH and hot water heater PSW. In addition, in the embodiment according to 4. the waste heat AW of the motor vehicle 1 by means of an additional heat exchanger 42 which z. B. as shown may be located on the ceiling of the garage, or by an air heat pump 48 used directly. The one from the exhaust 40 exiting hot exhaust gases are using the exhaust duct 41 also the heat exchanger 42 or supplied to a heat pump. The heat extracted from the hot exhaust gases is also used. The cooled and possibly still filtered exhaust gas is passed through the line 43 led out of the building. Additional filters or exhaust gas purification devices can also z. B. in the area of the heat exchanger 42 or the heat pump 48 or in the exhaust pipe 43 to be ordered.

Claims (25)

Motor vehicle ( 1 ) with a motor ( 5 ) and in particular the engine ( 5 ) cooling cooling system ( 11 ), characterized in that the motor vehicle ( 1 ) with a stationary heating system ( 1 , H _z ) of a building (G) is connectable, wherein energy in the form of heat from the motor vehicle ( 1 ) into the stationary heating system ( 1 , H _z ) can be introduced. Motor vehicle ( 1 ) with a motor ( 5 ) and in particular the engine ( 5 ) cooling cooling system ( 11 ), characterized in that the motor vehicle ( 1 ) by means of an onboard or externally arranged electric generator ( 19 ) generates electrical energy and this feeds into the distribution system of the building (G) or the public power grid or can be fed. Motor vehicle according to claim 1 and 2, characterized in that the motor vehicle ( 1 ) generates electrical energy and initiates it in the building or the public power grid, wherein the energy of the waste heat of the internal combustion engine ( 5 ) of the vehicle ( 1 ) is at least partially introduced into the building and its heating system and / or hot water system. Motor vehicle according to one of the preceding claims, characterized in that the motor vehicle ( 1 ) a connection ( 15 . 16 ), in particular in the form of a coupling, for coupling a fluid circuit (K) of the motor vehicle ( 1 ) to a fluid circuit ( 27 ) of the building (G), wherein the fluid circuit for the transmission of heat energy to the fluid circuit of the building (G) is used. Motor vehicle according to claim 4, characterized in that the fluid circuits of the motor vehicle ( 1 ) and the building (G) via a heat exchanger ( 21 ) Exchange heat energy. Motor vehicle according to claim 4 or 5, characterized in that the fluid circuit of the motor vehicle ( 1 ) the cooling circuit (K) of the motor vehicle engine ( 5 ). Motor vehicle according to one of claims 4 to 6, characterized in that the fluid circuit of the motor vehicle via discharge and return connections to the fluid circuit of the building (G), in particular by means of hoses or pipes, is connectable. Motor vehicle according to one of claims 4 to 7, characterized in that by means of switchable valves ( 29 . 30 ) the heat transfer fluid either in stationary heat exchangers ( 21 ) for energy transmission in the building (G) or in the vehicle radiator ( 12 ) is conductive. Motor vehicle according to one of the preceding claims, characterized in that by means of the internal combustion engine ( 5 ) an external integrated or retrofittable integrated electric power generating generator (in the vehicle) 19 ) is mechanically driven. Motor vehicle according to claim 9, characterized in that the generator ( 19 ) by means of a coupling, a flange, a cardan shaft, a homokinetic propeller shaft, an existing on the engine nut / screw, a belt with pulley or the like to the engine, the transmission, the wheel, to another output shaft or on the existing pulley of the Motor vehicle is coupled. Motor vehicle according to one of the preceding claims, characterized in that by means of an electrical connection of the electrical generator, which is mechanically driven by the engine of the motor vehicle, generated electrical energy in the building for its supply and / or supply of other buildings or facilities and / or ins public electricity grid is transferable or can be fed. Motor vehicle according to one of the preceding claims, characterized in that the motor vehicle ( 1 ) and the building (G) each have a control and communication device (St _G , St _F ), the wired ( 47 ) or communicate wirelessly with each other, wherein in particular the control and communication device (St _G ) of the building (G) the vehicle ( 1 ) Sends commands for the generation and / or required amount of energy in the form of heat energy and / or electrical energy. Motor vehicle according to claim 12, characterized in that the control device (St _F ) of the motor vehicle ( 1 ) of the control device (St _G ) of the building (G) data on its operating condition, in particular the remaining fuel supply and the maximum amount of energy still to be supplied, communicates. Motor vehicle according to claim 12 or 13, characterized in that the fuel to the vehicle by external tanks and corresponding retrofitted ports on the vehicle or also supplied by the in-vehicle tanks. Motor vehicle according to one of the preceding claims, characterized in that the coupling to the building (G) takes place during or after parking, in particular automatically. Motor vehicle according to one of the preceding claims, characterized in that the control device (St _F ) of the motor vehicle ( 1 ) ensures that a sufficiently large supply of fuel in the motor vehicle ( 1 ) or in at least one external tank remains available and upon reaching the predefinable or predetermined threshold, the energy transfer to the building stops, in particular the motor vehicle off. Motor vehicle according to one of the preceding claims, characterized in that the control device (St _F ) of the motor vehicle ( 1 ) transmits or receives energy from the building (G) in the form of heat or electricity at predetermined times or time intervals or given temperatures. Motor vehicle according to claim 16 or 17, characterized in that the motor vehicle ( 1 ) over the heat exchanger ( 21 ) of the building (G) heat energy for preheating the engine ( 5 ) before its start. Building, in particular with a garage for a motor vehicle according to one of the preceding claims, characterized in that the building (G) has a heat exchanger ( 21 ) to which the vehicle ( 1 ) can be coupled or connected with its fluid circuit. Building according to claim 19, characterized in that the building (G) has an electric generator ( 19 ), which is mechanically from the motor vehicle ( 1 ) is drivable. Building according to claim 19 or 20, characterized in that the building has a control and communication device (St _G ). Building according to one of claims 19 to 21, characterized in that by means of a heat exchanger ( 42 ) or a heat pump ( 48 ) the residual heat (AW) of the motor vehicle ( 1 ), in particular the heat energy of the exhaust gases and / or the radiant heat of the engine ( 5 ) and its components, for heating a fluid of a fluid circuit ( 44 . 45 ) of the building (G). Building according to one of claims 19 to 22, characterized in that the control device (St _G ) of the building (G) is programmable and the energy transfer between building (G) and motor vehicle ( 1 ) controls. Building according to one of claims 19 to 23, characterized in that the control device (St _G ) has a time control, wherein based on the timing of the motor vehicle ( 1 ) is controlled. Building according to one of claims 19 to 24, characterized in that a device ( 43 ) from the engine ( 5 ), in particular from the exhaust ( 40 ), exiting exhaust gases, in particular after passage through a heat exchanger, a heat pump and / or a filter, from the building (G) passes.

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