A heat pump vehicle thermal system comprises a battery pack thermal system, a two-phase refrigeration system, and a power electronics thermal system. When the outer environment is cold relative to the interior of the vehicle (cold ambient), the heat pump thermal system is controlled in a first mode where the two-phase refrigeration system transfers heat generated by the power electronics thermal system to either the battery pack thermal system or to the cabin or to both. When the outer environment is hot relative to the interior of the electric vehicle (hot ambient), the heat pump thermal system is controlled in a second mode where the two-phase refrigeration system absorbs heat from the battery pack thermal system and the cabin and transfers the absorbed heat to the ambient environment. In the second mode, no heat generated by the power electronics is transferred to either the cabin or the battery packs.

A heat medium temperature adjustment system includes a heat medium circuit configured to circulate heat medium having a temperature controlled by a heat exchange with a heat source. The heat medium circuit includes a pump configured to pump the heat medium, and a plurality of heat exchangers for temperature-adjustment subjects configured to perform heat exchanges with temperature-adjustment subjects. The heat medium circuit is configured to form a series flow path to connect the pump to the plurality of heat exchangers for temperature-adjustment subjects when a system malfunction occurs.

A refrigeration cycle device for a vehicle includes a refrigerant circuit, in which a zeotropic refrigerant mixture is circulated, including a utilization heat exchanger including a first heat exchange portion and a second heat exchange portion disposed in series with the first heat exchange portion in a direction in which the zeotropic refrigerant mixture flows in the refrigerant circuit. The first heat exchange portion is disposed on an upstream side of the second heat exchange portion in a direction in which the zeotropic refrigerant mixture flows when the utilization heat exchanger functions as an evaporator of the zeotropic refrigerant mixture.

A recreational vehicle air conditioning system supports multiple recreational vehicle air conditioning units having closed air conditioning circuits and a controller that is electronically coupled to each of the recreational vehicle air conditioning units to control each of the closed air conditioning circuits to regulate an overall power consumption of the multiple recreational vehicle air conditioning units. A recreational vehicle air conditioning system may also support multiple recreational vehicle air conditioning units where a refrigerant line set is coupled between the recreational vehicle air conditioning units such that a compressor in one of the recreational vehicle air conditioning units is capable of supplying refrigerant to the evaporators of the multiple recreational vehicle air conditioning units, and such that valves coupled in series with each of the evaporators may be regulated to control cooling by each recreational vehicle air conditioning unit.

Disclosed is a composite thermal management system for an electric ship capable of maximizing the performance of a battery through efficient thermal management of a cabin, a battery, and a motor, and selectively switching between cooling and heating by a heat pump control method. The composite thermal management system for an electric ship selectively cools or heats a cabin, a battery, and a motor equipped in the electric ship, and includes a first heating and cooling unit that selectively switches a circulation cycle of a refrigerant according to a cooling or heating mode to cool or heat an inside of the cabin and a second heating and cooling unit that cools and heats the battery and the motor using coolant heat-exchanged with the refrigerant.

A vehicular air conditioning system includes: a refrigerant circulation line including first and second evaporators through which refrigerant can flow in a cooling mode, and first and second expansion valves configured to depressurize and expand the refrigerant introduced into each of the first and second evaporators; and refrigerant flow control part provided in front of the first evaporator and the first expansion valve and configured to control refrigerant flow. The first evaporator is used for cooling rear seat region of a passenger room and the refrigerant flow control part is configured to supply and block the refrigerant with respect to the first evaporator and the first expansion valve and is configured to block the refrigerant when the cooling governed by the first evaporator is controlled in a turn-off mode and supply the refrigerant to the first evaporator and the first expansion valve depending on the on/off condition of the cooling governed by the second evaporator.