Temperature control system for temperature control of at least one room of a building and method for temperature control of at least one room of a building and building

Abstract

Temperature control system (1) for temperature control of at least one room (2) of a building (3), comprising - a heat / cold generator (4) for tempering a heating medium (5), - at least one central medium storage unit (6) connected to the heat / cold generator (4) for storing the heating medium (5) tempered by the heat / cold generator (4), - a piping system (7) operatively connected to the medium storage (6) for conducting the tempered heating medium (5) from the medium storage (6) to at least one heating device (8) of the at least one room (2), wherein the heat / cold generator (4) is provided and arranged to heat or cool the heating medium (5) as required, characterized by at least one air conditioning unit (9) arranged in the at least one room (2) for cooling the air in the room (2), wherein the air conditioning unit (9) comprises a refrigerating machine (10), wherein the air conditioning unit (9) is directly or indirectly connected to the piping system (7) in such a way that waste heat generated at the air conditioning unit (9) as a result of cooling operation of the air conditioning unit (9) can be transferred to the heating medium (5) and the heating medium (5) heated as a result of the transfer of the waste heat can be discharged by means of the piping system (7) in the direction of the medium storage unit (6), wherein the air conditioning unit (9) is connected to the piping system (7) by means of two branch lines (16, 17).

Description

[0001] The present application relates to a temperature control system for controlling the temperature of at least one room of a building according to the preamble of claim 1. Furthermore, the present application relates to a method for controlling the temperature of at least one room of a building by means of such a temperature control system according to claim 11. Finally, the present application relates to a building according to the preamble of claim 15.

[0002] The temperature control system of the present invention is intended and configured to heat or cool at least one room of a building. In the present application, the focus is on a cooling operation in which the air in the respective room is cooled. The cooling can, in particular, be decentralized, with an air conditioning unit of the temperature control system being arranged in each room, by means of which the air can be cooled. In particular, only some of the rooms of the respective building can be equipped with an air conditioning unit, so that the temperature control system is not necessarily configured to cool all rooms of the building simultaneously. As a rule, the temperature control system of the present invention is nevertheless configured to heat all rooms of the building. State of the art

[0003] A temperature control system is known, for example, from European patent EP 1 136 760 B1. This comprises a boiler and a cooling device, wherein the boiler and the cooling device are operatively connected by means of a piping system to both a heating device and an air conditioning unit, which are arranged together in a room of a building to be temperature-controlled. A thermostat is arranged in the room, by means of which a user of the temperature control system can set a target temperature for the room air. Depending on the prevailing conditions, either the heating device or the air conditioning unit is operated, i.e., the room air is either heated or cooled.

[0004] In cooling mode, the cooling device of the temperature control system is operated, supplying the piping system with cooled heating medium. The cooled heating medium is fed via the piping system to a heat exchanger in the air conditioner, which interacts with a fan. At the heat exchanger, thermal energy from the room air is transferred to the heating medium, thereby heating the heating medium and cooling the room air as desired. The thus heated heating medium is returned via the piping system to the cooling device, where it can be cooled again.

[0005] The system has the disadvantage that the cooling capacity of such an arrangement is low, since the heat transfer from the room air to the heating medium is physically limited.

[0006] For cooling the air in a room, it is well known to use mobile air conditioning units, which can be transported between different rooms of a building as needed. These air conditioning units are typically equipped with a compression chiller. The waste heat generated by the condenser of the compression chiller is typically dissipated through a flexible air hose. For this purpose, the air hose works in conjunction with a fan that generates a volumetric air flow. The air hose can be mounted, for example, on a window opening in the room, so that the waste heat is released into the environment through the air hose.

[0007] This type of room air cooling has the disadvantage that the discharge of waste heat through a room opening into the atmosphere creates a negative pressure in the room. This results in outside air being "sucked in" from outside the building envelope and transported into the building. This inevitably causes the thermal energy stored in the outside air to enter the building, thus at least partially negating the cooling effect of the air conditioning unit. This is correspondingly disadvantageous in terms of energy consumption.

[0008] To avoid this problem, so-called split air conditioning systems are also known, which comprise an indoor unit and a physically separate outdoor unit. The circuit of the compression refrigeration machine in such an air conditioning system is designed such that the evaporator is located on the indoor unit located in the respective room and the condenser is located on the outdoor unit located outside the building envelope. The indoor unit and the outdoor unit are connected to one another via two medium lines so that the working medium of the compression refrigeration machine can be exchanged between the indoor unit and the outdoor unit. The medium lines penetrate the building envelope from the inside to the outside and vice versa. The waste heat, which is absorbed by the evaporator from the air of the room to be cooled, is guided to the outdoor unit via the working medium and there released into the environment.

[0009] The disadvantage of split air conditioning systems is that they must be permanently installed, meaning each room to be cooled must be equipped with a fixed air conditioner. Furthermore, each air conditioner usually operates with its own outdoor unit, meaning the building is equipped with numerous outdoor units along its facade.

[0010] Furthermore, it is known from the documents KR 1020010058595 A and JP H11-304272 A to introduce waste heat generated by a compression refrigeration machine into a water storage tank and to store and keep it there for later use. Task

[0011] The present application is therefore based on the object of providing a temperature control system and a method for temperature control of a room that can be operated as efficiently as possible. Solution

[0012] The underlying problem is solved according to the invention by means of a temperature control system having the features of claim 1. Advantageous embodiments emerge from the subclaims and the description.

[0013] The temperature control system comprises a heat / cooler for controlling the temperature of a heating medium. The heat / cooler can be, in particular, a heat pump, for example an air / water, water / water, or brine / water heat pump. The heat / cooler is designed and configured to heat and cool the heating medium as needed, either heating or cooling depending on the operating mode. The heat / cooler is advantageously located centrally within the building, so that the temperature control system has only one heat / cooler.

[0014] The temperature control system further comprises at least one central medium storage tank that is fluidly connected to the heat / cooling generator. The medium storage tank is intended and configured to store heating medium tempered by the heat / cooling generator. The latter can in particular be water. In technology, such a medium storage tank is referred to, for example, as a buffer tank and can, for example, have a volume in the range between 500 liters and 2,000 liters. If the medium storage tank is also used to temper domestic water, for example by means of a heating coil extending helically within an interior of the medium storage tank, such a medium storage tank is sometimes also referred to in technology as a combination tank. The medium storage tank serves to keep the heating medium available for sub-distribution in the building.This can be achieved, for example, by creating a temperature stratification, which occurs automatically in a sufficiently quiet system. In such a medium storage tank, the extraction points for the heating medium are advantageously arranged at different elevations on the medium storage tank, depending on the desired temperature levels.

[0015] To accomplish the sub-distribution, the temperature control system further comprises a piping system operatively connected to the medium storage tank. Such a piping system, which may comprise, for example, plastic or copper pipes in a conventional manner, serves to conduct the heating medium stored in the medium storage tank from the medium storage tank to at least one heating device in at least one room, and from the heating device back to the medium storage tank. To prevent temperature loss of the heating medium during its passage along the piping system, the piping system is typically insulated with conventional insulation elements.In a typical distribution system in a building, the piping system comprises a flow line and a return line, with the flow line supplying the tempered heating medium to at least one heating device, typically a plurality of heating devices, and the return line conducting the heating medium from the at least one heating device or devices back to the medium storage device. A building comprising a plurality of rooms accordingly typically comprises a plurality of heating devices, with each room being equipped with at least one, or possibly several, heating devices. The respective heating device generally acts as a liquid / air heat exchanger, with an exchange of thermal energy taking place between the gaseous room air and the liquid heating medium. In practice, a respective heating device is typically formed by a radiator or underfloor heating.

[0016] According to the invention, the temperature control system comprises at least one air conditioning unit, which is preferably arranged entirely within the at least one room of the building and is designed to cool the air in the room. The air conditioning unit can be operated, in particular, by means of electrical current. As explained above, the building can have a plurality of rooms, wherein the temperature control system can comprise a plurality of air conditioning units. In principle, it is nevertheless sufficient for the success of the invention if the temperature control system has only one air conditioning unit. In particular, it is not necessary to equip the temperature control system with a number of air conditioning units corresponding to the number of rooms in the building.This is particularly unnecessary if the air conditioning unit, as described below, is preferably a mobile air conditioning unit that can be moved from one room of the building to another, preferably without the use of tools. Accordingly, in a preferred embodiment, the temperature control system is configured to control the temperature of a specific number of rooms in the building, with the temperature control system comprising a comparatively smaller number of air conditioning units.

[0017] The air conditioning unit has a refrigeration machine, so that the air conditioning unit is designed to cool the air in the respective room. The air conditioning unit is operatively connected directly or indirectly to the piping system in such a way that waste heat generated at the air conditioning unit as a result of cooling operation of the air conditioning unit can be transferred to the heating medium. The operative connection between the air conditioning unit and the piping system is further designed such that the heating medium heated as a result of the transfer of the waste heat can be discharged by means of the piping system in the direction of the medium storage unit. For the heat transfer of the waste heat from the air conditioning unit to the heating medium, the air conditioning unit can, in a preferred embodiment, comprise at least one heat exchanger, by means of which heat energy, for example from a working medium of the air conditioning unit, can be transferred from the air conditioning unit to the heating medium.In this embodiment, the heating medium is supplied to the air conditioning unit, passed through the heat exchanger, and then discharged from the air conditioning unit. The piping system and / or the air conditioning unit may have at least one pump designed and configured to circulate the heating medium in the piping system.

[0018] During operation of the temperature control system, the heating medium can be cooled by means of the heat / cold generator, for example to a temperature in the range between 10 °C and 20 °C. The cooled heating medium is first fed to the medium storage tank and, from there, via the piping system, directly or indirectly to the air conditioning unit. The air conditioning unit operates in cooling mode to cool the air in the room in which it is located. In contrast to the prior art, the waste heat generated in this process is not released into the environment via an air hose through an opening in the room, but is transferred to the heating medium. Due to its low temperature, the heating medium is suitable for absorbing the waste heat from the air conditioning unit. The heating medium is thereby heated and, in this state, is fed back to the medium storage tank via the piping system.From the medium storage tank, the heated heating medium is fed to the heat / cooling generator and cooled again to a desired level. This completes the cycle. The transfer of the waste heat from the air conditioning unit to the heating medium can preferably take place within the air conditioning unit, in particular by means of a heat exchanger arranged therein, or outside the air conditioning unit, for example by means of a heat exchanger arranged outside the air conditioning unit.

[0019] The temperature control system according to the invention has many advantages. Compared to a mobile air conditioner, it is not necessary to dissipate waste heat into the environment via an air flow through a room opening. This avoids the disadvantage described in the prior art, namely the creation of a negative pressure in the room cooled by the air conditioner. The subsequent flow of warm outside air into the building and ultimately into the room is thus prevented. The energy efficiency of the temperature control system is thus improved compared to the prior art.

[0020] Compared to a split air conditioning system, there is also the advantage that the waste heat is dissipated centrally via the rest of the temperature control system and therefore each air conditioning unit does not have to work together with its own outdoor unit located on the facade of the building.

[0021] In a particularly advantageous embodiment of the temperature control system, the refrigeration machine of the air conditioning unit is formed by a compression refrigeration machine. Preferably, its circuit is arranged entirely within the room to be cooled. In this embodiment, the functional components of the refrigeration machine, i.e. the evaporator, the compressor, the condenser, and the expansion valve, which are crucial for the functioning of a compression refrigeration machine, are arranged within the room to be cooled, advantageously within a housing of the air conditioning unit. Preferably, the air conditioning unit is formed by a mobile air conditioning unit. In contrast to a split air conditioning system, the resulting waste heat is not led out of the building envelope through an exterior wall of the room, but is transferred within the building to the heating medium carried in the piping system of the temperature control system and diverted towards the medium storage tank.The waste heat is released into the environment only downstream via the central heat / cold generator.

[0022] As already explained above, in a particularly preferred embodiment the heat / cold generator can be formed by a heat pump. Such a heat pump is preferably arranged at least partially outside the building envelope of the building in which the room is located that is temperature-controlled by means of the temperature control system. In particular, the heat pump can be an air / water, water / water or brine / water heat pump. Preferably, at least one heat exchanger of the heat / cold generator is located outside the building envelope, wherein more preferably the heat exchanger - depending on the mode of operation - interacts with an evaporator (heating mode) or with a condenser (cooling mode) of the heat / cold generator. Preferably, the components of the heat pump (evaporator, compressor, condenser, expansion valve) are located within the building envelope of the building, while a heat exchanger that is connected to the evaporator orCondenser works together, is located outside the building envelope.

[0023] In principle, a temperature control system design in which the refrigeration unit of the air conditioner is designed in the manner of a mechanical refrigeration unit, preferably in the form of a compression refrigeration unit, or in the manner of a thermoelectric refrigeration unit utilizing at least one Peltier element is advantageous. The design of the refrigeration unit as a mechanical refrigeration unit is known per se, thus ensuring reliable operation of the temperature control system. Generally, only a power connection is required to operate the refrigeration unit, which can be provided via a conventional power outlet if necessary, particularly when the air conditioner is designed as a mobile air conditioner.When using a thermoelectric chiller equipped with at least one Peltier element, heat energy is absorbed from the room air at a cold side of the Peltier element using electrical current and released at the warm side of the Peltier element. In this design, the warm side interacts directly or indirectly with the piping system or the heating medium conveyed therein, so that the waste heat generated by the air conditioning unit can be transferred to the heating medium and dissipated via the heating medium.

[0024] In a particularly preferred embodiment, the air conditioning unit comprises at least one heat exchanger configured to effect heat exchange between a working medium of the refrigeration unit and the heating medium. In this way, the waste heat from the air conditioning unit can be transferred to the heating medium particularly easily by means of the heat exchanger. In a preferred embodiment, the heat exchanger is arranged together with the refrigeration unit in a housing of the air conditioning unit (“internal heat exchanger”). The supply and discharge of the heating medium from the piping system to the air conditioning unit, as well as from the air conditioning unit to the piping system, can advantageously be effected via branch lines.

[0025] Alternatively, it is also conceivable for the air conditioning unit as such not to have its own heat exchanger, but for the temperature control system to include a heat exchanger. In this configuration, for example, the refrigeration unit of the air conditioning unit can be arranged in a housing of the air conditioning unit that is designed independently of the heat exchanger of the temperature control system. For transferring waste heat from a working medium of the refrigeration unit to the heating medium of the temperature control system, the air conditioning unit can be connected to the heat exchanger of the temperature control system, for example, by means of connecting lines. The heat exchanger is located outside a housing of the air conditioning unit and, as such, is not part of the air conditioning unit (“external heat exchanger”).The external heat exchanger can, for example, be permanently installed in a room or integrated into the piping system, so that the air conditioner is connected to the heat exchanger for operation, for example, via branch lines. The external heat exchanger can also interact with a heating device in the temperature control system. The transfer of waste heat from the working fluid to the heating medium takes place via the heat exchanger, so that the waste heat from the air conditioner is effectively dissipated via the heating medium toward the medium storage tank.

[0026] This transfer can either take place directly within the external heat exchanger, by feeding the heating medium in addition to the working medium of the refrigeration machine, with the two media being guided, for example, according to the cross-flow principle and exchanging thermal energy in the process. However, the waste heat can also be transferred indirectly. For example, the external heat exchanger can be attached to a heating device in the respective room, in particular a radiator. In this design, the waste heat of the working medium is transferred via the heat exchanger to the heating device, which as such acts as a heat exchanger and via which the waste heat is finally transferred to the heating medium flowing through the heating device. As a result, in this design too, the waste heat from the refrigeration machine of the air conditioning unit is transferred to the heating medium and subsequently dissipated via the piping system.

[0027] As already explained above, it can also be particularly advantageous if the air conditioning unit is a mobile air conditioning unit. Such a unit is characterized in that it can be moved manually and without tools from at least one room of the building to another room of the building, if necessary. Preferably, all components of the refrigeration unit of the air conditioning unit, which are required for the intended operation of the air conditioning unit, are arranged within a housing of the air conditioning unit. Advantageously, the air conditioning unit has a plurality of rollers on an underside of the housing, by means of which the air conditioning unit can be moved on a room floor. In this way, the air conditioning unit can be moved particularly easily within the building.Furthermore, the air conditioning unit preferably includes an electrical connection with a plug connector, preferably in the form of a Schuko plug, by means of which the air conditioning unit can be alternately connected to different sockets in the building and thus supplied with electrical power. If the refrigeration unit of the mobile air conditioning unit is a compression refrigeration unit, all functional components of the compression refrigeration unit, i.e., the evaporator, the compressor, the condenser, and the expansion valve, are preferably located within the housing of the air conditioning unit.

[0028] The design of the air conditioner as a mobile air conditioner has the particular advantage that it can be moved to another room as needed and used there to cool the room air. In contrast to permanently installed air conditioners, the temperature control system does not need to have a number of air conditioners corresponding to the number of rooms to be cooled. Instead, a smaller number of air conditioners is sufficient, and these can be used in different rooms to be cooled as needed. Another advantage is that the air conditioner only needs to be located inside a room when cooling is required. This means that the air conditioner can be stored outside the room, at least during the entire heating period, so that it does not take up any usable space in the room.

[0029] The temperature control system further comprises at least two branch lines by means of which the air conditioning unit is directly or indirectly connected to the piping system. The branch lines can in particular be designed in the form of flexible liquid hoses which are provided and configured to exchange a liquid working medium of the refrigeration machine of the air conditioning unit or a liquid heating medium of the temperature control system between the air conditioning unit and the piping system. In a preferred embodiment, a first branch line is connected at one end to the air conditioning unit and at its other end to a supply line of the piping system, and a second branch line is connected at one end to the air conditioning unit and at its other end to a return line of the piping system. Nevertheless, it is also conceivable for both branch lines to be connected to the supply line or the return line of the piping system by their ends assigned to the piping system.The design of the temperature control system with these branch lines has the particular advantage that each air conditioning unit can be easily connected to or disconnected from the piping system as needed. When the air conditioning unit is not in use, for example, during the heating season, the branch lines can be removed and stored until the next use.

[0030] In order to connect the branch lines to the piping system as easily as possible, it may also be advantageous if quick connectors are formed on the piping system and / or the at least one heating device, by means of which the branch lines can be connected to and disconnected from the piping system without the need for tools. Such quick connectors can, for example, be designed in the form of a bayonet lock or a screw connection. The quick connectors can preferably be operated without tools, so that a user of the respective air conditioning unit can connect the air conditioning unit to or disconnect it from the piping system particularly easily.

[0031] It can also be particularly advantageous if at least one connection valve is formed on at least one heating device configured as a radiator, preferably on a plurality of such heating devices, more preferably on all heating devices, of the temperature control system, to which the at least one air conditioning unit is fluidly connected or connected to the piping system. With this configuration, the air conditioning unit can be moved particularly easily from one room to another, with the air conditioning unit being connectable in both rooms to at least one connection valve formed on a heating device there.Such a connection valve can, for example, be designed as a supplement to or replacement for a commercially available connection piece or valve insert of a commercially available radiator, so that the respective temperature control system can be easily retrofitted with the connection valve, preferably a plurality of such connection valves. In this way, an existing temperature control system can be particularly easily converted to a temperature control system according to the invention.

[0032] Furthermore, a configuration of the temperature control system can be advantageous in which the at least one heating device is formed by a radiator arranged above a floor of the at least one room. Such radiators are formed, for example, by so-called panel radiators, which are typically arranged in the area of ​​a window sill below a window. Such a heating device typically has so-called connecting pieces by means of which the heating device is fluidically connected to the piping system of the temperature control system. As a rule, a valve is mounted in at least one connecting piece, by means of which the flow of the heating medium through the heating device can be adjusted.If the temperature control system has at least one such heating device, it can be particularly advantageous if the at least one air conditioning unit is connected directly to the heating device (and via it to the piping system), for example to at least one connection piece of the heating device.

[0033] Alternatively or additionally, the temperature control system can be designed such that the at least one heating device is formed by an underfloor heating system installed in a floor of the at least one room. With such a heating device, the piping system as such is not directly accessible above the floor, so that for connecting the at least one air conditioning unit to the piping system, it is advantageous if two connection points of the piping system extend above the floor. With this design, the air conditioning unit can be connected to the connection points particularly easily, for example, using the branch lines described above.

[0034] A design of the temperature control system in which it comprises at least one heating device in the form of a radiator arranged above the room floor as well as at least one underfloor heating system installed in a room floor is equally conceivable.

[0035] The underlying problem is further solved by a method for controlling the temperature of at least one room of a building with the features of claim 11. Advantageous embodiments of the method emerge from the associated subclaims and the description. The method according to the invention can be carried out particularly easily using the temperature control system according to the invention.

[0036] The method provides for the use of the temperature control system according to the invention, wherein the air conditioning unit of the temperature control system is arranged in the at least one room to be cooled and is operated in cooling mode. In this way, the room air of the room is cooled. The waste heat generated by the air conditioning unit during cooling operation is transferred to the heating medium of the temperature control system by means of the direct or indirect fluidic connection of the air conditioning unit to the piping system of the temperature control system and then dissipated towards the medium storage of the temperature control system. The heating medium is cooled at least temporarily by means of the heat / cold generator, so that the waste heat generated by the cooling operation of the air conditioning unit is dissipated.The cooled heating medium is guided by means of the piping system in the direction of the at least one heating device of the at least one room, wherein the heating medium absorbs the waste heat of the air conditioning unit due to the fluidic connection of the piping system with the air conditioning unit.

[0037] The advantages achieved by the method have already been explained above in connection with the temperature control system according to the invention. In particular, the waste heat from the air conditioning unit can be dissipated via the heating medium or the piping system, so that local dissipation, for example through an opening in the room to be cooled, can be omitted. The waste heat generated as a result of the operation of the air conditioning unit can be dissipated centrally to the environment in a particularly efficient manner by means of the heat / cold generator. According to the above explanation, this is particularly advantageous when the heat / cold generator is formed by a heat pump. For the transfer of the waste heat from the air conditioning unit to the heating medium, it is particularly advantageous, according to the above description, if the air conditioning unit comprises a heat exchanger.

[0038] If the heat / cold generator is preferably formed by a heat pump, it is particularly advantageous if the heat / cold generator begins cooling the heating medium as soon as a temperature of the heating medium in the medium storage tank at a reference point relevant for the supply of the heating medium to the heat / cold generator rises to a value above a previously defined reference temperature, for example above 35 °C, preferably above 30 °C, more preferably above 27.5 °C. It is particularly advantageous if the heat / cold generator begins its cooling operation for cooling the heating medium at a temperature level of the heating medium that is significantly below a temperature level required for using the heating medium to heat domestic water. This latter temperature level is typically in the range of at least 50 °C.For efficient operation of the heat / cold generator, it is particularly advantageous to start cooling operation when the specified temperatures of the heating medium are reached.

[0039] The method is also particularly advantageous when the air conditioning unit is a mobile air conditioning unit, whereby the fluidic connection of the air conditioning unit to the piping system is broken as soon as the air conditioning unit is to be used to cool another room. The air conditioning unit is then moved to the other room, where the fluidic connection of the air conditioning unit to the piping system is then re-established. This procedure has the particular advantage that different rooms can be cooled selectively using one air conditioning unit. Operating different air conditioning units, one of which is located in each of the rooms, is therefore not necessary.

[0040] The air conditioning unit is fluidically connected to the piping system via two branch lines. This is preferably done without tools, for example, using the quick connectors described above. This allows the air conditioning unit to be connected to or disconnected from the piping system particularly easily as needed.

[0041] Finally, the underlying problem is further solved by means of a building having the features of claim 15. Advantageous embodiments emerge from the associated subclaims and the description.

[0042] The building comprises a building shell that separates an interior of the building from an external environment surrounding the building. Within the building shell, i.e., in the interior of the building, a plurality of enclosed spaces are arranged, which are intended and configured for people to occupy them. Furthermore, the building comprises a temperature control system for controlling the temperature of at least one of the rooms, preferably a plurality of the rooms, more preferably all of the rooms. The building can, in particular, be a single-family or multi-family house or a commercial building, for example, an office building.

[0043] The building according to the invention is characterized in that the temperature control system is designed according to the present invention. The resulting advantages have already been explained above. Particularly preferably, the temperature control system is operated according to the method according to the present invention. The resulting advantages have already been explained above.

[0044] In a preferred embodiment of the building, the heat / cooling generator of the temperature control system is formed by a heat pump, wherein at least one heat exchanger of the heat / cooling generator, which interacts with an evaporator of the heat / cooling generator, is arranged outside the building envelope. In this way, the heat / cooling generator is particularly well suited to dissipating the excess waste heat generated by the air conditioning unit to the environment. If the heat pump is designed as an air / water heat pump, the waste heat can be dissipated to the outside air particularly easily by means of a forced air flow, wherein the heat exchanger of the heat / cooling generator preferably interacts with a fan. If the heat pump is designed as a water / water or brine / water heat pump, the waste heat can be dissipated particularly well to the ground outside the building envelope.

[0045] Finally, a particularly advantageous design of the building is one in which the at least one air conditioning unit is arranged entirely within the room to be cooled by the air conditioning unit. This is particularly advantageous when the refrigeration unit of the air conditioning unit is formed by a compression refrigeration unit. Its components (evaporator, compressor, condenser, expansion valve) are preferably arranged entirely within a housing of the air conditioning unit. The air conditioning unit is preferably mobile, and can, for example, have casters by means of which the air conditioning unit can be moved along a room floor. Examples of implementation

[0046] The invention is explained in more detail below using an exemplary embodiment illustrated in the figures. It shows: Fig. 1: A schematic representation of a building according to the invention, which is equipped with a temperature control system according to the invention, Fig. 2: A schematic representation of a temperature control system according to the state of the art, Fig. 3: A schematic representation of a temperature control system according to the invention, Fig. 4: A schematic representation of a refrigeration machine of an air conditioning unit according to the prior art, Fig. 5: A schematic representation of a refrigeration machine of an air conditioning unit of a temperature control system according to the invention, Fig. 6: A schematic representation of another refrigeration machine of an air conditioning unit of a temperature control system according to the invention, Fig. 7: A schematic representation of a connection valve for connecting an air conditioning unit to a piping system of a temperature control system according to the invention, wherein the connection valve is in an inactive position, Fig. 8: The connection valve according to Fig. 7, with the connection valve in an active position, Fig. 9: A schematic representation of an air conditioning unit that interacts with a heating device via an external heat exchanger.

[0047] An embodiment of a building 3 according to the invention is shown in Fig. 1. The building 3 comprises a building shell 33, which in the example shown is formed by exterior walls, a floor slab, and a roof. A plurality of rooms 2 are located in an interior of the building 3. The building 3 is equipped with a temperature control system 1 according to the invention. This comprises a heat / cold generator 4, which in the example shown is formed by an air / water heat pump. Furthermore, the temperature control system 1 comprises a medium storage tank 6 in which a heating medium 5 of the temperature control system 1 is stored. The temperature control system 1 further comprises a plurality of heating devices 8, which in the example shown are each formed by a radiator 20 arranged above a respective room floor 18.

[0048] A fluidic connection between the medium storage tank 6 and the heating devices 8 is established by means of a piping system 7 of the temperature control system 1. In the example shown, the piping system 7 comprises a flow line 11 and a return line 12. When the temperature control system 1 is in heating operation, the heating medium 5 stored in the medium storage tank 6 is fed to the heating devices 8 via the flow line 11 of the piping system 7, so that the heating devices 8 heat up and can thus release thermal energy to the air of the respective room 2 in which they are arranged. The heating medium 5 flows through the heating devices 8, which then heat up. After flowing through the heating devices 8, the heating medium 5 is circulated back into the medium storage tank 6 via the return line 12 of the piping system 7.Due to the release of thermal energy, the temperature level of the heating medium 5 in the return line 12 after flowing through the heating devices 8 is lower than in the flow line 11. The released thermal energy is generated by means of the heat / cold generator 4, so that the heating medium 5 is heated again.

[0049] In the example shown, the temperature control system 1 comprises an air conditioning unit 9, which here is formed by a mobile air conditioning unit. As such, the air conditioning unit 9 comprises a housing within which all components of the air conditioning unit 9 are located. The housing can be moved by rolling on the floor 18 of the respective room 2 by means of casters. The air conditioning unit 9 comprises a refrigeration machine 10, which is intended and configured to cool the air of the room 2 in which the air conditioning unit 9 is located using electrical energy. During such cooling operation of the air conditioning unit 9, waste heat is generated by the air conditioning unit 9, which is transferred to the heating medium 5 and dissipated via the piping system 7. For this purpose, the air conditioning unit 9 is connected to the piping system 7 by means of two branch lines 16, 17 in the example shown.In the present case, this is implemented in such a way that a first branch line 16 is operatively connected to the supply line 11 of the piping system 7, and the second branch line 17 is operatively connected to the return line 12 of the piping system 7. This operative connection consists in a fluidic connection, so that the heating medium 5 carried in the piping system 7 can be supplied to the air conditioning unit 9 via the branch lines 16, 17 or discharged from the air conditioning unit 9 to the piping system 7. In this way, the waste heat can be transported away via the piping system 7 in the direction of the medium storage tank 6. The air conditioning unit 9 comprises an internal heat exchanger 15, by means of which the waste heat generated at the refrigeration unit 10 can be transferred from a working medium of the refrigeration unit 10 to the heating medium. The heat exchanger 15 is formed here by a liquid / liquid heat exchanger arranged within a housing of the air conditioning unit 9.Accordingly, heating medium 5 can be supplied to the heat exchanger 15 by means of the branch line 16 and can be discharged from the heat exchanger 15 to the piping system 7 by means of the branch line 17.

[0050] In a cooling mode of the temperature control system 1, the air conditioning unit 9 is therefore operated in a cooling mode, so that the room air of the room 2 in which the air conditioning unit 9 is located is cooled. The waste heat generated by the air conditioning unit 9 is transferred to the heating medium 5 by means of the heat exchanger 15. The heating medium 5 is circulated in the piping system 7, for example by means of a Fig. 1 pump 23, not shown. In this way, cool heating medium 5 (for example with a temperature of 15 °C) is supplied to the air conditioning unit 9 via the branch line 16, and heated heating medium 5, as a result of the waste heat being absorbed by the air conditioning unit 9, is discharged from the air conditioning unit 9 via the branch line 17. The heat / cold generator 4 is operated at least temporarily in a cooling mode in order to cool the heated heating medium 5 again, whereby the heating medium 5 stored in the medium storage tank 6 becomes successively warmer as a result of the cooling mode of the air conditioning unit 9 and the absorption of the waste heat generated thereby. In technology, this is sometimes referred to as "charging" the medium storage tank 6. This refers to the successive introduction of thermal energy into the medium storage tank 6, normally caused by a heat generator operating in heating mode during the heating period.In cooling mode of the temperature control system 1, however, the aforementioned charging of the medium storage tank 6 takes place using the waste heat from the air conditioning unit 9. Unlike in heating mode, this heat energy is typically undesirable and should be dissipated. In cooling mode, the heat / cold generator 4 is designed and configured to dissipate the excess heat energy.

[0051] Particularly preferably, the heat / cold generator 4 can be operated such that the heating medium 5 is cooled to a temperature in the range between 10°C and 20°C, for example 15°C. At this temperature, the heating medium 5 is supplied to the air conditioning unit 9, so that the heating medium 5 absorbs waste heat from the air conditioning unit 9. The thermal energy thus absorbed is transported by the heating medium 5 via the piping system 7 into the medium storage tank 6. The heat / cold generator 4 can, for example, be operated intermittently, for example whenever the temperature of the heating medium 5 has risen to a value above a previously defined reference temperature, for example to above 27.5°C, at a reference point of the medium storage tank 6, at which the heating medium 5 can be conducted to the heat / cold generator 4 via a connecting line 22.

[0052] A temperature control system 1 according to the state of the art is shown in Fig. 2 as an example. This temperature control system 1 comprises a heat / cold generator 4, which is connected to a medium storage tank 6 by means of connecting lines 22. The medium storage tank 6 contains a heating medium 5, which here is water. This heating medium 5 is Fig. 2, a simplified piping system 7 is shown, which can be directed to a plurality of heating devices 8. The piping system 7 is shown in a simplified manner in that its supply line 11 and its return line 12 in a main line 36 of the piping system 7 are not shown separately. The separate representation of supply line 11 and return line 12 is limited to Fig. 2 to the connections of heating devices 8. In the example shown, the temperature control system 1 comprises two heating devices 8 in the form of radiators 20 and one heating device 8 in the form of underfloor heating 21. For the purpose of circulating the heating medium 5 in the piping system 7, the piping system 7 interacts with a pump 23 of the temperature control system 1.

[0053] Compared to the known temperature control system 1 according to Fig. 2 is in Fig. 3 shows a temperature control system 1 according to the invention. This differs from the known temperature control system 1 according to Fig. 2 by two air conditioning units 9, which are fluidically connected to the piping system 7. A first air conditioning unit 9 is connected to the piping system 7 of the temperature control system 1 by means of branch lines 16, 17. In the example shown, this is done in such a way that a first branch line 16 is connected to a supply line 11 of the piping system 7 by means of a quick-connector 19, while the second branch line 17 is also connected to a return line 12 of the piping system 7 by means of a quick-connector 19. In the example shown, the quick-connectors 19 can each comprise a bayonet lock, for example, by means of which the branch lines 16, 17 can be connected to the piping system 7 without the need for tools.

[0054] A flow direction of the heating medium 5 through the branch lines 16, 17 is in Fig. 3 is illustrated by arrows. In a cooling mode of the temperature control system 1, in which the air conditioning unit 9 is also active, i.e. is in a cooling mode, the cool heating medium 5, starting from the medium storage tank 6, is fed via the flow line 11 to a quick connector 19, to which the first branch line 16 is connected. By means of the first branch line 16, the cool heating medium 5 is fed to the air conditioning unit 9, where thermal energy is taken from the heating medium 5 in the form of waste heat from the air conditioning unit 9, for example by means of an internal heat exchanger 15. The subsequently heated heating medium 5 is fed by means of the second branch line 17 to the second quick connector 19, which is arranged in the return line 12 of the piping system 7. The heated heating medium 5 is circulated back to the medium storage tank 6 via the return line 12.

[0055] The second air conditioning unit 9 is also connected to the piping system 7 via two branch lines 16, 17. Unlike the first air conditioning unit 9, both branch lines 16, 17 are connected to the supply line 11 or the return line 12 of the piping system 7. Similar to the first air conditioning unit 9, the fluidic connection of the branch lines 16, 17 to the piping system 7 is made via quick connectors 19.

[0056] The air conditioning units 9 each comprise a refrigeration machine 10. It is well known to design a refrigeration machine 10 of an air conditioning unit 9 in the form of a compression refrigeration machine 13. A known compression refrigeration machine 13 is Fig. 4. This comprises an evaporator 27, in which a working medium of the refrigeration machine 10 is evaporated, thereby absorbing heat energy from the air in the room. The working medium is formed here by a conventional refrigerant. To support the evaporation effect, the evaporator 27 cooperates with a fan 28. Useful cooling is thus provided at the evaporator 27, which cools the air in room 2 in which the air conditioning unit 9 is located. The vaporous working medium is then fed to a compressor 24, which can in particular be formed by an electrically operated compressor. The compressed and thus strongly heated working medium is subsequently fed to a condenser 25, in which the working medium is converted from its vaporous to its liquid state, thereby releasing heat energy.This is accomplished by means of a liquid-to-air heat exchanger, through which the waste heat from the working medium is transferred to the air. This is also supported by a fan 28 assigned to the condenser 25. A correspondingly heated air volume flow of the air absorbing the waste heat is typically generated by means of a... Fig. 4, an air hose (not shown) is used to lead the working medium out of the room 2 to be cooled, for example, through a window opening. The liquefied working medium is fed downstream of the condenser 25 to an expansion valve 26, by means of which the pressure of the working medium is reduced and the working medium expands. This may already result in partial evaporation of the working medium. The cycle begins again with the supply of the thus prepared working medium to the evaporator 27.

[0057] In the example shown, the air conditioning unit 9 of the temperature control system 1 according to the invention comprises a refrigeration machine 10, which is also designed as a compression refrigeration machine 13. The difference from the known air conditioning unit 9 is that the thermal energy of the working medium in the condenser 25 is transferred not by transferring the waste heat to the air (assisted by a fan 28), but by means of an internal heat exchanger 15 of the air conditioning unit 9 to the heating medium 5. For this purpose, the heat exchanger 15 in the example shown is formed by a liquid / liquid heat exchanger, by means of which the thermal energy of the working medium is transferred to the liquid heating medium 5 of the temperature control system 1. The latter is supplied to the heat exchanger 15 via a first branch line 16 and discharged from the heat exchanger 15 via a second branch line 17.The branch lines 16, 17 are fluidically connected to the piping system 7 of the temperature control system 1 in the manner described above. This eliminates the transfer of waste heat from the refrigeration unit 10 to the air, thus eliminating the need to dissipate heated air from the room 2. Instead, the waste heat from the air conditioning unit 9 is dissipated via the heating medium 5 and thus the piping system 7.

[0058] As an alternative to a refrigeration machine 10 formed by a compression refrigeration machine 13, Fig. 6 shows a further refrigeration machine 10, which here is embodied as a thermoelectric refrigeration machine using a Peltier element 14. This Peltier element 14 comprises a cold side and a warm side, wherein, when an electrical voltage is applied to the Peltier element 14, the temperature of the Peltier element 14 drops on the cold side and rises on the warm side. By means of a fan 28, the cool temperature on the cold side of the Peltier element 14 can be released in the form of useful cold to the space 2 to be cooled. The thermal energy accumulating on the warm side of the Peltier element 14 is transferred to the heating medium 5 via an internal heat exchanger 15 in the manner described above and is dissipated via the piping system 7 of the temperature control system 1.

[0059] In order to connect a respective air conditioning unit 9 to the piping system 7 particularly easily, it may be advantageous to use a special connection valve 29. This is shown in the Fig. 7 and Fig. 8 in two different positions. The connection valve 29 has an inlet 34 for the heating medium 5 and an outlet 35 for the heating medium 5. Furthermore, the connection valve 29 has a supply line 31 for the air conditioning unit 9, i.e., an outlet through which the heating medium 5 can be supplied to the air conditioning unit 9. Furthermore, the connection valve 29 has a return line 32 of the air conditioning unit 9, i.e., an inlet through which the heating medium 5 originating from the air conditioning unit 9 can be transferred to the piping system 7.

[0060] In Fig. 7, the connection valve 29 is in an inactive position. When in this inactive position, the inlet 34 of the connection valve 29 is connected to the piping system 7. In the example shown, the connection valve 29 is integrated into a return 12 of the piping system 7. The heating medium 5 is guided via a 90° deflection from the inlet 34 of the connection valve 29 to the outlet 35 of the connection valve 29. The heating medium 5 is in Fig. 7 is illustrated by arrows. When the connection valve 29 is in its inactive position, the air conditioning unit 9 is not supplied with heating medium 5. The air conditioning unit 9 is accordingly inactive.

[0061] In Fig. 8, the connection valve 29 is shown in an active position. To move the connection valve 29 from its inactive position according to Fig. 7 in its active position according to Fig. 8, a central rotary element 30 of the connection valve 29 is rotated 90° clockwise. In this way, the inlet 34 of the connection valve 29 is fluidically connected to the flow 31 of the air conditioning unit 9. This leads to the heating medium 5 being fed from the piping system 7 to the air conditioning unit 9. At the same time, a return 32 of the air conditioning unit 9 is connected to the outlet 35 of the connection valve 29, so that the heating medium 5 coming from the air conditioning unit 9 is fed back to the piping system 7 (here the return 12). This is in Fig. 8 is also illustrated by corresponding arrows. When the connection valve 29 is in the active position, the connection valve 29 is configured to supply heating medium 5 to the air conditioning unit 9. The air conditioning unit 9 can therefore be operated.

[0062] In this way, the air conditioning unit 9 can be fluidically connected to or disconnected from the piping system 7 particularly easily by means of the connection valve 29, namely by adjusting the rotary element 30. The connection valve 29 can, for example, be formed on a connection piece of a heating device 8 designed as a radiator 20. To connect an air conditioning unit 9 to the piping system 7, it is therefore conceivable, for example, to simply replace a connection piece of a radiator 20. Thus, the temperature control system 1 can be retrofitted particularly easily to an existing temperature control system.

[0063] As an alternative to an internal heat exchanger 15, an exchange of thermal energy between a working medium of the refrigeration machine 10 and the heating medium 5 can also take place via an external heat exchanger 15. A corresponding example is shown in Fig.9 is a simplified representation. There, a mobile air conditioning unit 9 is arranged in a room 2 in which a heating device 8 designed as a radiator 20 is arranged. This heating device 8 is fluidly connected to a medium storage tank 6 (not shown) by means of a piping system 7. The piping system 7 comprises a flow line 11 and a return line 12. In normal heating operation of the temperature control system 1, warm heating medium 5 is fed to the heating device 8 via the flow line 11, flows through the heating device 8 and gives off heat in the process. This heat is transferred to the room air by means of the heating device 8, mainly by convection. The cooled heating medium 5 is circulated back towards the medium storage tank 6 via the return line 12.

[0064] In cooling mode of the temperature control system 1, however, the heating medium 5 is not heated by the heat / cold generator 4, but cooled. Cooled heating medium 5 is therefore supplied to the heating device 8 via the flow line 11. In the example shown, the external heat exchanger 15 is arranged on a surface of the heating device 8. This occurs in such a way that a transfer of thermal energy can take place between the heating device 8 and the heat exchanger 15, in particular by thermal conduction. For this purpose, it is advantageous if both the heating device 8 (in the usual way) and the heat exchanger 15 are made of materials that have a high thermal conductivity. During operation of the air conditioning unit 9, a working medium from the refrigeration machine 10 of the air conditioning unit 9 is circulated to the external heat exchanger 15 via connecting lines 37.The working medium 10 flows through the heat exchanger 15, transferring heat energy to the heating device 8 and ultimately to the heating medium 5 flowing through the heating device 8. In this way, the waste heat generated by the air conditioning unit 9 is transferred to the heating medium 5, which can be removed from the room 2 by means of the latter. The solution shown with the external heat exchanger 15 is particularly easy to retrofit to existing temperature control systems 1. List of reference symbols 1 temperature control system 2 rooms 3 buildings 4 heat / cold generators 5 Heating medium 6 media storage 7 Piping system 8 Heating device 9 Air conditioner 10 Refrigeration machine 11 Lead-up 12 Return 13 Compression refrigeration machine 14 Peltier element 15 heat exchangers 16 spur lines 17 spur line 18 Room floor 19 Quick connector 20 radiators 21 Underfloor heating 22 connecting line 23 Pump 24 compressors 25 condensers 26 Expansion valve 27 evaporators 28 Fan 29 Connection valve 30 rotating element 31 Air conditioning unit flow 32 Return air conditioning unit 33 Building envelope 34 Entrance 35 Exit 36 Main strand 37 connecting line

Claims

[1] Temperature control system (1) for controlling the temperature of at least one room (2) of a building (3), comprising - a heat / cold generator (4) for tempering a heating medium (5), - at least one central medium storage unit (6) connected to the heat / cold generator (4) for storing the heating medium (5) tempered by the heat / cold generator (4), - a piping system (7) operatively connected to the medium storage (6) for conducting the tempered heating medium (5) from the medium storage (6) to at least one heating device (8) of the at least one room (2), wherein the heat / cold generator (4) is provided and arranged to heat or cool the heating medium (5) as required, characterized by at least one air conditioning unit (9) arranged in the at least one room (2) for cooling the air in the room (2), wherein the air conditioning unit (9) comprises a refrigerating machine (10), wherein the air conditioning unit (9) is directly or indirectly connected to the piping system (7) in such a way that waste heat generated at the air conditioning unit (9) as a result of cooling operation of the air conditioning unit (9) can be transferred to the heating medium (5) and the heating medium (5) heated as a result of the transfer of the waste heat can be discharged by means of the piping system (7) in the direction of the medium storage unit (6), wherein the air conditioning unit (9) is connected to the piping system (7) by means of two branch lines (16, 17). [2] Tempering system (1) according to claim 1, characterized by that the heat / cold generator (4) is formed by a heat pump. [3] Tempering system (1) according to one of the preceding claims, characterized bythat the refrigeration machine (10) is designed in the manner of a mechanical refrigeration machine, preferably in the form of a compression refrigeration machine (13), or in the manner of a thermoelectric refrigeration machine using at least one Peltier element (14). [4] Tempering system (1) according to one of the preceding claims, characterized by that the air conditioning unit (9) comprises a heat exchanger (15) which is designed for heat exchange between a working medium of the refrigeration machine (10) and the heating medium (5), so that the waste heat of the air conditioning unit (9) can be transferred to the heating medium (5) by means of the heat exchanger (15). [5] Tempering system (1) according to claim 4, characterized bythat the air conditioning unit (9) is operatively connected to the piping system (7) in such a way that both the heating medium (5) can be fed to the heat exchanger (15) of the air conditioning unit (9) and the heating medium (5) heated as a result of the transfer of the waste heat of the working medium of the refrigeration machine (10) can be discharged from the heat exchanger (15) of the air conditioning unit (9) in the direction of the medium storage unit (6). [6] Tempering system (1) according to one of the preceding claims, characterized by that the air conditioning unit (9) is formed by a mobile air conditioning unit which, if necessary, can be moved manually and without tools from the at least one room (2) of the building (3) to another room (2) of the building (3). [7] Tempering system (1) according to one of the preceding claims, characterized bythat the branch lines (16, 17) are designed in the form of flexible liquid hoses, wherein preferably a first branch line (16) is connected to the flow line (11) of the pipeline system (7) and a second branch line (17) is connected to the return line (12) of the pipeline system (7). [8] Tempering system (1) according to one of the preceding claims, characterized by that quick connectors (19) are formed on the piping system (7) and / or on the at least one heating device (8), by means of which quick connectors the branch lines (16, 17) can be connected to and separated from the piping system (7) without tools. [9] Tempering system (1) according to one of the preceding claims, characterized bythat the at least one heating device (8) is formed by a radiator (20) arranged above a room floor (18) of the at least one room (2), wherein preferably the air conditioning unit (9) can be or is connected to connection pieces of the heating device (8) by means of the branch lines (16, 17). [10] Tempering system (1) according to one of claims 1-8, characterized by that the at least one heating device (8) is formed by an underfloor heating system (21) laid in a room floor (18) of the at least one room (2). [11] Method for tempering at least one room (2) of a building (3) by means of a tempering system (1) according to one of the preceding claims, comprising the following method steps: - the air conditioning unit (9) is arranged in the at least one room (2) and is operated in a cooling mode in order to cool the air in the room (2); - waste heat of the air conditioning unit (9) which arises as a result of the cooling operation is transferred to the heating medium (5) by means of the direct or indirect fluidic connection of the air conditioning unit (9) to the piping system (7) and is discharged via the piping system (7) in the direction of the medium storage tank (6); - the heating medium (5) is cooled at least temporarily by means of the heat / cold generator (4); - the cooled heating medium (5) is guided via the piping system (7) in the direction of the at least one heating device (8) of the at least one room (2), wherein the heating medium (5) absorbs waste heat from the air conditioning unit (9) as a result of the fluidic connection with the air conditioning unit (9), wherein the air conditioning unit (9) is fluidically connected to the piping system (7) by means of two branch lines (16, 17). [12] Method according to claim 11, characterized bythat the heat / cold generator (4) is formed by a heat pump, wherein the heat / cold generator (4) begins to cool the heating medium (5) as soon as a temperature of the heating medium (5) in the medium storage tank (6) at a reference point relevant for the supply of the heating medium (5) to the heat / cold generator (4) exceeds a preset reference temperature. [13] Method according to one of claims 11 or 12, characterized by that the air conditioning unit (9) is formed by a mobile air conditioning unit, wherein the fluidic connection of the air conditioning unit (9) to the piping system (7) is dissolved for the purpose of cooling another room (2) of the building (3), the air conditioning unit (9) is moved into the other room (2) and then the fluidic connection of the air conditioning unit (9) to the piping system (7) is restored there. [14] Method according to one of claims 11 to 13, characterized bythat the branch lines (16, 17) are connected to the piping system (7) without tools. [15] Buildings (3) comprising - a building envelope (33), - a plurality of rooms (2) arranged within the building envelope (33), - a temperature control system (1) for controlling the temperature of at least one of the rooms (2), characterized by that the temperature control system (1) is designed according to one of claims 1 to 10. [16] Building (3) according to claim 15, characterized by that the heat / cold generator (4) is formed by a heat pump, wherein at least one heat exchanger of the heat / cold generator (4) interacting with an evaporator of the heat / cold generator (4) is arranged outside the building envelope (33). [17] Building (3) according to one of claims 15 or 16, characterized by that the at least one air conditioning unit (9) is arranged entirely within one of the rooms (2).

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