An environmental control system includes a refrigerant circuit with a pump segment and an evaporator segment, an evaporator arranged along the evaporator segment and in fluid communication with of the refrigerant circuit, and a coolant circuit. The coolant circuit extends through the evaporator and is thermally coupled to refrigerant circuit by the evaporator, the coolant circuit including a first segment and a second segment arranged in parallel with one another to transfer heat from a first zone to a first portion of liquid coolant traversing the coolant circuit and transfer additional heat from a second zone to a second portion of coolant traversing the coolant circuit. Aircraft and environmental control systems are also described.

Systems and methods for heating and cooling a vehicle using a heat pump are disclosed herein. In one embodiment, a system for heating and cooling the vehicle includes a heat pump having: a compressor located in an engine compartment of the vehicle, and an evaporator located in a sleeper or a cab of the vehicle. The system also includes a controller for selecting a cooling mode or a heating mode for the heat pump. In one embodiment, the system includes a clutch for engaging the compressor with a transmission of the vehicle.

A thermal management system. The thermal management system includes a refrigerant system and a cooling liquid system; the thermal management system further includes a fourth heat exchanger which includes a first flow channel and a second flow channel; the refrigerant system and the cooling liquid system can perform heat exchanging by means of the fourth heat exchanger, thereby facilitating improving the performance of the thermal management system.

An conditioning device for a fuel cell vehicle includes a heater core configured to heat air in a vehicle cabin with a coolant to be discharged from a FC stack cooled by the coolant as a heat source, a coolant heating heater configured to heat the coolant, an air heating heater configured to further heat air warmed by the heater core, and a vehicle ECU configured to, in a case where a heater core outlet coolant temperature based on a target blowing temperature is equal to or higher than an FC stack inlet target temperature, perform control such that the air heating heater is operated with an output set based on the heater core outlet coolant temperature, and the coolant heating heater is operated with an output set based on a heater core inlet target coolant temperature calculated according to the set output of the air heating heater.

An environmental control system includes a refrigerant circuit with a pump segment and an evaporator segment, an evaporator arranged along the evaporator segment and in fluid communication with of the refrigerant circuit, and a coolant circuit. The coolant circuit extends through the evaporator and is thermally coupled to refrigerant circuit by the evaporator, the coolant circuit including a first segment and a second segment arranged in parallel with one another to transfer heat from a first zone to a first portion of liquid coolant traversing the coolant circuit and transfer additional heat from a second zone to a second portion of coolant traversing the coolant circuit. Aircraft and environmental control systems are also described.

A vehicle air-conditioning apparatus heat pump system configured so that an excessive increase in the temperature (superheat degree) of refrigerant discharged from a compressor can be prevented in air-heating operation. The heat pump system (HP) includes a compressor (C) and an indoor heat exchanger (HXC2) on a refrigerant circuit (RC). A first branched flow path (BC1) on which a first expansion mechanism (EX1) with an adjustable opening degree and a first heat absorption heat exchanger (HXA1) are arranged in series and a second branched flow path (BC2) on which a second expansion mechanism (EX2) with an adjustable opening degree and a second heat absorption heat exchanger (HXA2) are arranged in series, where the first branched flow path (BC1) and the second branched flow path (BC2) are arranged in parallel on the refrigerant circuit extending from the indoor heat exchanger to the compressor.

A thermal management system includes a refrigerant circulation line including a compressor, a first heat exchanger, a first expansion valve, and a second heat exchanger configured for cooling a vehicle interior by circulating a refrigerant; a heating line configured for heating the vehicle interior by circulating cooling water heat-exchanged with the refrigerant through the first heat exchanger and heat-exchanged with a battery; a cooling line configured for cooling an electrical component by circulating cooling water heat-exchanged with air or the refrigerant.

A method for managing a thermal management device for a motor vehicle is disclosed. The device has a refrigerant circuit that circulates a refrigerant fluid. The circuit includes a main loop having, in the direction of circulation of the fluid, a compressor, a condenser configured to exchange heat energy with a first element, a first expansion device and a first evaporator configured to exchange heat energy with a second element. The device operates in a mode of strict cooling of the third element in which the condenser transfers heat energy to the first element and only the second evaporator absorbs heat energy from the third element. The method includes managing the open diameter of the first expansion device as a function of the ambient temperature so that the refrigerant fluid circulates inside the first evaporator, the open diameter of the first expansion device decreasing as the ambient temperature of the first element increases.

Heat flow management device for motor vehicles has a refrigerant circulation, a power train coolant circulation and a heating line heat carrier circulation. The refrigerant circulation includes a compressor, an indirect condenser, an expansion element, an ambient heat exchanger, an evaporator and a chiller. The power train coolant circulation includes a coolant pump, the chiller, an electric motor heat exchanger and a power train coolant radiator, wherein the heating line heat carrier circulation comprises a coolant pump, the indirect condenser and a heating heat exchanger, wherein the refrigerant circulation and the power train coolant circulation are directly thermally coupled with one another across the chiller. Refrigerant circulation and heating line heat carrier circulation are directly thermally coupled with one another across the indirect condenser. Power train coolant circulation and the heating line heat carrier circulation are only indirectly thermally coupled with one another across the refrigerant circulation.

A vehicle cabin thermal management system includes a first heat exchange system adapted to operate primarily based upon a convective mode of heat transfer within a vehicle cabin, a second heat exchange system adapted to operate primary based upon a non-convective mode of heat transfer within the vehicle cabin, and a controller in communication with the first heat exchange system and the second heat exchange system, wherein the controller controls a thermal output of the second heat exchange system, and wherein the controller controls the first heat exchange system to reduce the operating level of the first heat exchange system in response to the controller operating the second heat exchange system.