A rotary piston compressor (1) for a system for temperature conditioning comprises a rotor (19) mounted in a housing (21), wherein the rotary piston compressor (1) is designed in such a way that the rotor (19) rotates in a first direction in a first operating state and rotates in a second direction opposite to the first direction in a second operating state, and wherein, in the first operating state, a first compressor connection (3) is designed to supply a heat transfer medium (17), and a second compressor connection (5) is designed to discharge the compressed heat transfer medium (17), and wherein, in the second operating state, the second compressor connection (5) is designed to supply the heat transfer medium (17), and the first compressor connection (3) is designed to discharge the compressed heat transfer medium (17).

The invention relates to a method for supplying air at a controlled temperature to a cabin (10) of a surface vehicle in which at least one air cycle device is used, comprising at least one motorised turbocompressor. The air inlet (16) of the turbine (14) is arranged to receive a compressed airflow from the compressor (15). At least one exchanger (20, 32) is interposed between the air outlet (19) of the compressor (15) and the air inlet (16) of the turbine (14). The air inlet (18) of the compressor (15) is arranged to receive air at a pressure greater than or equal to atmospheric pressure. The invention likewise relates to a surface vehicle comprising at least one such air cycle device.

A cold energy storage evaporator is used in a vehicle refrigeration cycle device configured to cool a vehicle compartment. The cold energy storage evaporator includes a refrigerant tube through which a refrigerant flows, and a cold energy storage member that is in close contact with the refrigerant tube, the cold energy container accommodating therein a cold energy storage member configured to freeze due to heat absorption by the refrigerant. A melting point of the cold energy storage member is higher than 11 degrees Celsius.

A method for operating an internal combustion engine having a waste heat utilization device including a waste heat utilization cycle in which a valve mechanism, an evaporator, and an expander are arranged, may include adjusting the valve mechanism between an evaporator position and a bypass position via a control/regulating device as a function of at least one operating parameter of the internal combustion engine. The method may also include calculating at least one of a power and an energy generatable by the waste heat utilization device via the control/regulating device as a function of the at least one operating parameter of the internal combustion engine. The method may further include switching the expander between an active state and an inactive state via the control/regulating device as a function of the at least one of the calculated power and the calculated energy.

A method for operating an internal combustion engine having a waste heat utilization device including a waste heat utilization cycle in which a valve mechanism, an evaporator, and an expander are arranged, may include adjusting the valve mechanism between an evaporator position and a bypass position via a control/regulating device as a function of at least one operating parameter of the internal combustion engine. The method may also include calculating at least one of a power and an energy generatable by the waste heat utilization device via the control/regulating device as a function of the at least one operating parameter of the internal combustion engine. The method may further include switching the expander between an active state and an inactive state via the control/regulating device as a function of the at least one of the calculated power and the calculated energy.

Secondary loop air conditioning and heat pump systems include a reservoir with a capsule holding a phase change material.

A multifunction reservoir for a secondary loop climate control system includes a coolant vessel, a capsule held in the coolant vessel and a phase change material in the capsule. A secondary loop air conditioning system and a secondary loop heat pump system incorporating one or more multifunction reservoirs of the type described are also disclosed.

A cold energy storage evaporator is used in a vehicle refrigeration cycle device configured to cool a vehicle compartment. The cold energy storage evaporator includes a refrigerant tube through which a refrigerant flows, and a cold energy storage member that is in close contact with the refrigerant tube, the cold energy container accommodating therein a cold energy storage member configured to freeze due to heat absorption by the refrigerant. A melting point of the cold energy storage member is higher than 11 degrees Celsius.

An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of an inlet pipe that connects a liquid-phase refrigerant outflow port of an ejector module to a refrigerant inflow port of an evaporator is shorter than a length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of the compressor.

An Air Conditioning Service kit and method for producing the same, wherein the kit contains a compatible selection of the most commonly needed parts for servicing the air conditioner in a vehicle or consolidated group of vehicles including one or more Expansion Devices, an Accumulator or Receiver Dryer, a Lubricant Oil such as compressor PAG oil, A Measuring Cup, and a Rapid Seal Kit.