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 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 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