A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.

A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.

A compact heat exchanger unit within an air conditioning apparatus for a vehicle, and a condenser region for the condensation of refrigerant is formed as a heat exchanging surface, and a high-pressure-refrigerant collector region as a refrigerant collector is formed in the integrated form as a plate packet of a heat exchanger within a plate heat exchanger.

A carbon dioxide refrigerating system and a refrigerating method thereof. A carbon dioxide refrigerating system, comprising a compressor (10), a condenser (11), a liquid storage device (12), and an evaporator (13) connected in sequence; a suction assembly (15) is arranged between the compressor (10) and the condenser (11), the suction assembly (1%) being in communication with the liquid storage device (12) and in communication with a gas-liquid separator (14), the gas-liquid separator (14) being arranged between the condenser (11) and the liquid storage device (12), and the carbon dioxide gas in the liquid storage device (12) or the gas-liquid separator (14) being capable of being sucked back into the pipeline between the compressor (10) and the condenser (11) by means of the suction assembly (15). The refrigerating system can effectively separate gas and liquid, and can also flash evaporate part of the liquid and supercool the carbon dioxide; the flash evaporation-type condenser (11) can achieve a refrigerating effect by means of radiation, and aerosol is formed in the cavity, quickly evaporating and cooling, and thereby increasing the refrigerating efficiency; the refrigerating system has a simple structure, convenient operation, and low installation and maintenance costs.

An accumulator is an accumulator disposed between an evaporator and a refrigerant suction port of a compressor in a refrigerant circuit of a refrigeration cycle apparatus. The accumulator includes: a container; an inflow pipe having a first opening end disposed in the container, the inflow pipe introducing, into the container, refrigerant flowing out from the evaporator; and an outflow pipe having a second opening end disposed in the container, the outflow pipe supplying refrigerant in the container to the compressor. The container includes an inner circumferential surface that extends along a vertical direction and a circumferential direction, and a concave surface that is concave with respect to the inner circumferential surface and extends along the circumferential direction. A part of the concave surface in the circumferential direction is disposed to face the first opening end.

The refrigerant management system has a service port connection, refrigerant treatment elements and a wet circuit connecting the service port connection to the refrigerant treatment elements. The refrigerant treatment elements are comprised of a refrigerant filter, a compressor, a condenser coil and a tank. The tank has tank head manifolds mounted thereto. The filter, the compressor and the condenser coil being mounted to the tank and connected to the tank head manifolds by respective pairs of tubing. The wet circuit being partially incorporated inside the tank head manifolds and inside the tank between the tank head manifolds. The first tank head manifold connects the service port connection to the refrigerant filter. The second tank head manifold connects the compressor to the condenser coil and to the tank. Conduits inside the tank extending between the first and second tank head manifolds connect the refrigerant filter to the compressor.

A separator and distributor assembly for a falling film evaporator housed within the evaporator shell includes a housing defining a separation volume, a refrigerant inlet configured to admit a liquid and vapor refrigerant flow into the separation volume and one or more refrigerant gutters extending along a lengthwise axis of the housing. The refrigerant gutter has a gutter inlet at a bottom of the separation volume, and the one or more refrigerant gutters are configured to receive separated liquid refrigerant from the separation volume. One or more sparge channels are in fluid communication with the refrigerant gutters. The sparge channel includes one or more sparge openings at a top of the sparge channel vertically below the gutter inlet. The one or more sparge openings are configured to flow liquid refrigerant therefrom.

A separator and distributor assembly for a falling film evaporator housed within the evaporator shell includes a housing defining a separation volume, a refrigerant inlet configured to admit a liquid and vapor refrigerant flow into the separation volume and one or more refrigerant gutters extending along a lengthwise axis of the housing. The refrigerant gutter has a gutter inlet at a bottom of the separation volume, and the one or more refrigerant gutters are configured to receive separated liquid refrigerant from the separation volume. One or more sparge channels are in fluid communication with the refrigerant gutters. The sparge channel includes one or more sparge openings at a top of the sparge channel vertically below the gutter inlet. The one or more sparge openings are configured to flow liquid refrigerant therefrom.

If a first condition that an intermediate pressure corresponding to a pressure of an intermediate flow path is greater than a predetermined value is satisfied in an operation in which first, second, and third compressors are operated, the control unit executes a first action of increasing the number of revolutions of the third compressor.

A fluid management system and method includes a thermal management system disposed within a housing that includes conduits extending between a source and a destination of a first fluid. The first fluid exchanges heat with cooling devices as the first fluid moves between the source and the destination. A fluid mixture including the first fluid and a second fluid, and an exhaust are generated responsive to the first fluid exchanging heat with the cooling devices. The exhaust directed toward an outlet of the housing. A separator assembly fluidly coupled with and disposed downstream of the thermal management system receives the fluid mixture and separates the first fluid from the second fluid. The first fluid is directed in a first direction out of the separator assembly and the second fluid is directed toward the outlet to be combined with the exhaust.