Abstract: A spray type heat-exchanging unit includes a main body; a distributive refrigerant spray module located in an upper part of the main body and having an extended distributor and a refrigerant spray surface; and a plurality of heat exchange tubes provided in the main body below the distributive refrigerant spray module. A liquid refrigerant is guided into the extended distributor to drip onto the refrigerant spray surface, and then uniformly sprayed onto the heat exchange tubes. Gaseous refrigerant produced by evaporation in heat exchange in the main body is recovered via a top opening of the main body, making the mechanical refrigerating apparatus more efficient than a refrigerating apparatus adopting a flooded evaporator, and minimizing the refrigerant charge amount and material cost required by the heat-exchanging unit.

Abstract: A spray type heat-exchanging unit includes a main body; a distributive refrigerant spray module located in an upper part of the main body and having an extended distributor and a refrigerant spray surface; and a plurality of heat exchange tubes provided in the main body below the distributive refrigerant spray module. A liquid refrigerant is guided into the extended distributor to drip onto the refrigerant spray surface, and then uniformly sprayed onto the heat exchange tubes. Gaseous refrigerant produced by evaporation in heat exchange in the main body is recovered via a top opening of the main body, making the mechanical refrigerating apparatus more efficient than a refrigerating apparatus adopting a flooded evaporator, and minimizing the refrigerant charge amount and material cost required by the heat-exchanging unit.

Abstract: A spray type heat-exchanging unit includes a main body; a distributive refrigerant spray module located in an upper part of the main body and having an axially extended distributor and a refrigerant spray surface; and a plurality of heat exchange tubes provided in the main body below the distributive refrigerant spray module. A liquid refrigerant is guided into the axial distributor to drip onto the refrigerant spray surface, and then uniformly sprayed onto the heat exchange tubes. Gaseous refrigerant produced by evaporation in heat exchange in the main body is recovered via a top opening of the main body, making the mechanical refrigerating apparatus more efficient than a refrigerating apparatus adopting a flooded evaporator, and minimizing the refrigerant charge amount and material cost required by the heat-exchanging unit.

Abstract: A liquid refrigeration system for providing cooling operations, including an evaporator with its refrigerant outlet connected to a vapor/liquid separator so that refrigerant in the refrigerant conduits in the evaporator may undergo heat exchange in the form of a mixture of vapor and liquid. The compressor of the system outputs high pressure refrigerant vapor which passes through a specially designed condenser before being conveyed to a thermostatic expansion valve at the front end of the inlet of the evaporator. Low-pressure oil-rich liquid refrigerant separated by the vapor/liquid separator first passes through the condenser to become superheated vapor and it is then sent to the suction line of the compressor together with the saturated refrigerant vapor from the vapor/liquid separator. The expansion valve meters the flow rate of system refrigerant and has a temperature sensor which detects the superheat of the low pressure refrigerant vapor leaving the condenser.