Abstract: The invention relates to a flow circuit system (1) for a vehicle, with a first flow circuit (10) guiding a first fluid and operable as a heat pump, and a second flow circuit (50) with a conveying device (31) guiding a second fluid, and a switching device (35), wherein in the provided flow direction of the first fluid downstream of a compressor (3) and upstream of an expansion element (15), at least one first heat exchanger (7) between the first and second fluids, wherein the second flow circuit (50) has at least two flow circuit modes, wherein in the first flow circuit mode, apart from the at least one conveying device (31) for the second fluid and the at least one first heat exchanger (7), at least one outside heat exchanger (37) which may be flowed through by the second fluid and is configured as a radiator is connected to the second flow circuit (50), and in the second flow circuit mode this at least one outside heat exchanger (37) is not connected to the at least second flow circuit (50) containing the co

Abstract: The invention relates to a circulation system (1) for a fuel cell vehicle, with a first flow circuit (10) which conveys a first fluid and can be operated in heat pump operation; a second flow circuit (30) which can be operated in a heat exchange connection to the first flow circuit (10) and which conveys a second fluid, in particular for the purpose of cooling a traction battery (39); and a third flow circuit (50) which can be operated in a heat exchange connection to the second flow circuit (30) and which conveys a third fluid, in particular for the purpose of cooling a fuel cell arrangement (55), wherein the circulation system (1) also has a fourth flow circuit (70) which conveys a fourth fluid, and at least one conveying device (71) for the fourth fluid, least one heat exchanger (85) and/or convector (81) to which the fourth fluid can be conveyed for the purpose of heating at least one interior of a fuel cell vehicle, and one heat exchanger (7) to which the fourth fluid can be conveyed for a heat exchange

Abstract: The invention relates to a refrigeration installation (1), to a method for same, and to a refrigeration installation system for controlling the temperature of air, including at least one compressor (3), at least one expansion element (39), and at least one first (5) and a second (7) heat exchanger, each of which can be operated as a condenser or a gas cooler, wherein at least one of the heat exchangers can be operated as an evaporator or at least one additional heat exchanger is provided which can be operated as an evaporator. A refrigerant line is equipped with a first valve (11) downstream of at least one compressor (3) at or downstream of a branch (9) and upstream of or at the condenser or gas cooler inlet (15) of the first heat exchanger (5), and a second valve (19) is arranged at or downstream of the condenser or gas cooler outlet (17) of the first heat exchanger (5) and upstream of or as an expansion element.

Abstract: The invention relates to a refrigeration installation (1), to a method for same, and to a refrigeration installation system, for controlling the temperature of air, comprising at least one compressor (3), at least one expansion element (39) , and at least one first (5) and a second (7) heat exchanger, each of which can be operated as a condenser or a gas cooler, wherein at least one of the heat exchangers can be operated as an evaporator or at least one additional heat exchanger is provided which can be operated as an evaporator. A refrigerant line is equipped with a first valve (11) downstream of at least one compressor (3) at or downstream of a branch (9) and upstream of or at the condenser or gas cooler inlet (15) of the first heat exchanger (5), and a second valve (19) is arranged at or downstream of the condenser or gas cooler outlet (17) of the first heat exchanger (5) and upstream of or as an expansion element.

Abstract: The invention relates to an air conditioning and/or heating system (1) for a vehicle with a housing (5) which comprises at least three housing modules (7, 8) and which houses at least one component (9) of the air conditioning and/or heating system (1), wherein the housing 5 and/or housing part which comprises housing modules (7, 8) contains two housing part end modules (8) and any desired number (n=1, 2, . . . ) of at least one housing part intermediate module, (7) which is positioned between them and is configured with respect to the number and/or the size of the intermediate module(s) of the housing part depending on the structural elements (9) of the air conditioning and/or heating system (1) located between them.

Abstract: Described is a fixing arrangement for releasably fixing an air conditioning module to the roof of a vehicle such as a rail vehicle. The module has opposite side surfaces from which first fixing projections project. The vehicle roof supports positioning rail members in mutually parallel relationship at a spacing from each other corresponding to the spacing between the side surfaces of the module. The positioning rail members have upwardly open first openings. Second fixing projections project from the positioning rail members at the outside thereof laterally beside the first openings.

Abstract: Described is a fixing arrangement for releasably fixing an air conditioning module to the roof of a vehicle such as a rail vehicle. The module has opposite side surfaces from which first fixing projections project. The vehicle roof supports positioning rail members in mutually parallel relationship at a spacing from each other corresponding to the spacing between the side surfaces of the module. The positioning rail members have upwardly open first openings. Second fixing projections project from the positioning rail members at the outside thereof laterally beside the first openings.

Abstract: The invention pertains to a climate control system for a motor vehicle (58) which comprises a compressor (14) and a corresponding compressor drive (16), an interior heat exchanger (18), an exterior heat exchanger (36), an expansion element (32) and, if so required, an internal heat exchanger (30). The device is realized in the form of a self-sufficient flat module (12) that is designed for cooling in a cooling mode and for heating in a heat pump mode. The compressor (16) consists of a high-output carbon dioxide compressor that has a small structural volume and is integrated into the module (12) together with the compressor drive (16). The carbon dioxide compressor (14) preferably has an external power control. The module (12) contains an energy connection (54) for only one form of energy in order to supply the drive of the module (12) with energy. The energy connection (54) preferably consists of an electric energy connection with only one voltage level or with several different voltage levels.

Abstract: The compression refrigeration unit includes a compressor, a gas refrigeration unit, an expansion apparatus, and an evaporator, which are connected to one another in a circulation system, which contains a coolant, characterized in that the degree of filling of the coolant is between 50% and 100% of the critical density of the coolant. Preferably the coolant is carbon dioxide and the degree of filling of the carbon dioxide coolant is between 0.25 and 0.45 kg/L. Also provided, in another embodiment, is an intermediate heat exchanger with a first heat exchanger branch and a second heat exchanger branch, connected to the first heat exchanger branch by a thermic coupling, wherein the first heat exchanger branch is connected to the gas refrigeration unit and the expansion apparatus and the second heat exchanger branch are connected to the evaporator and the compressor.