A hybrid heat pump system including first compression means operable to form a refrigerant vapor and increases the pressure of the refrigerant vapor; condensing means to receive pressurized vapor and condense the vapor to a liquid; pressure reduction means through which the liquid refrigerant passes to reduce the pressure of the liquid to form a mixture of liquid and vapor refrigerant; evaporator means to receive the mixture of liquid and vapor refrigerant to evaporate the remaining liquid; second compression means including first and second inlet ports and an outlet port to receive a portion of the refrigerant vapor from the evaporator means and the pressurized vapor from the first compression means; increase the pressure thereof; and pass the pressurized vapor to the condensing means through the outlet port; and a conduit to pass a portion of the refrigerant vapor leaving the first compression means to the second compression means.

A refrigerating machine (1) is equipped with a condenser (3) through which a low-pressure refrigerant flows inside, an intermediate cooler (4), an evaporator (5), and a sensor of the atmosphere open type which is attached to at least one of the condenser (3), the intermediate cooler (4), and the evaporator (5) to measure the pressure inside at least one of the condenser (3), the intermediate cooler (4) and the evaporator (5), and a correcting unit which is configured to correct an atmospheric pressure which is a reference value of the sensor by acquiring the atmospheric pressure of a location in which the refrigerating machine (1) is installed.

A wind powered cooling system, including a windmill including a transmission rotatably coupled to at least one vane, wherein wind moving past the vane causes the vane to rotate and transmit rotational energy to the transmission; and a cooling system including: a compressor system including a compressor mechanically coupled to the transmission, the compressor including a first member for translating rotational energy of the transmission to movement of the first member with respect to a second member so as to compress a refrigerant fluid stored therein; and an evaporator system including an evaporator in fluid communication with the compressor for expanding and evaporating compressed refrigerant fluid into cold refrigerant gas, wherein the cold refrigerant gas cools air surrounding the evaporator system by convection.

A compressor assembly is provided. Embodiments of the present disclosure generally relate to compressors used in chiller air conditioning systems for indoor spaces. The disclosed compressors have magnetic bearings that support rotating components. In one embodiment, the compressor comprises a partially segmented thrust bearing stator core. Additional systems, devices, and methods are also disclosed.

A compressor assembly is provided. Embodiments of the present disclosure generally relate to compressors used in chiller air conditioning systems for indoor spaces. The disclosed compressors have magnetic bearings that support rotating components. In one embodiment, the compressor comprises a partially segmented thrust bearing stator core. Additional systems, devices, and methods are also disclosed.

A refrigeration cycle apparatus includes: a refrigeration cycle circuit in which a compressor, a condenser, a first expansion valve, and an evaporator are connected by refrigerant pipes; an injection pipe having a refrigerant inflow side end and a refrigerant outflow side end, the refrigerant inflow side being connected between the condenser and the first expansion valve, the refrigerant outflow side end being connected to a suction side of the compressor; a second expansion valve provided at the injection pipe; and a controller that controls a rotation speed of the compressor and an opening degree of the second expansion valve. In the case of reducing a heat-exchange capability of the evaporator when the rotation speed of the compressor is a specified rotation speed, the controller performs a low load operation during which refrigeration is caused to flow through the injection pipe.

A refrigeration cycle apparatus includes: a refrigeration cycle circuit in which a compressor, a condenser, a first expansion valve, and an evaporator are connected by refrigerant pipes; an injection pipe having a refrigerant inflow side end and a refrigerant outflow side end, the refrigerant inflow side being connected between the condenser and the first expansion valve, the refrigerant outflow side end being connected to a suction side of the compressor; a second expansion valve provided at the injection pipe; and a controller that controls a rotation speed of the compressor and an opening degree of the second expansion valve. In the case of reducing a heat-exchange capability of the evaporator when the rotation speed of the compressor is a specified rotation speed, the controller performs a low load operation during which refrigeration is caused to flow through the injection pipe.

A compressor may include a shell, a first scroll, and a second scroll. The shell may include a first inlet, a second inlet, and an outlet. The first scroll may include a first end plate and a first spiral wrap. The second scroll may include a second end plate and a second spiral wrap, the first and second spiral wraps cooperating to define a series of moving compression pockets therebetween. The moving compression pockets decrease in volume as the moving compression pockets move from a radially outer position to a radially inner position. The moving compression pockets may receive working fluid from the first inlet at the radially outer position and provide working fluid to the outlet at the radially inner position. The second end plate may include a fluid cavity receiving working fluid from the second inlet and fluidly isolated from working fluid within the moving compression pockets.

A compressor may include a shell, a first scroll, and a second scroll. The shell may include a first inlet, a second inlet, and an outlet. The first scroll may include a first end plate and a first spiral wrap. The second scroll may include a second end plate and a second spiral wrap, the first and second spiral wraps cooperating to define a series of moving compression pockets therebetween. The moving compression pockets decrease in volume as the moving compression pockets move from a radially outer position to a radially inner position. The moving compression pockets may receive working fluid from the first inlet at the radially outer position and provide working fluid to the outlet at the radially inner position. The second end plate may include a fluid cavity receiving working fluid from the second inlet and fluidly isolated from working fluid within the moving compression pockets.

Provided is a refrigerant cycle apparatus capable of suppressing detects caused by iodine even when a refrigerant containing iodine is used. An air conditioner includes a refrigerant circuit through which a refrigerant containing iodine circulates. The refrigerant circuit includes a component that is in contact with a refrigerant containing iodine, the component being made of metal other than aluminum or an aluminum alloy, or having a content of aluminum which is equal to or less than a ratio at which corrosion of aluminum occurs by iodine. The component is at least one of a component of a compressor, a component of a heat-source-side heat exchanger or a utilization-side heat exchanger, a component of an expansion valve, a drier, and a connection pipe.