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Expansion Valve
Item Code : EXPVAL-001
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Product Specifications
This invention relates to an expansion valve according to the preamble of claim 1, and more particularly to a thermostatic expansion valve in a refrigeration cycle of an automotive air-conditioning system, for allowing a high-temperature and high-pressure liquid refrigerant to expand into a low-temperature and low-pressure refrigerant to supply the refrigerant to an evaporator, and at the same time controlling a flow rate of the refrigerant such that the refrigerant at an outlet of the evaporator is placed in a predetermined degree of superheat.
In known automotive air-conditioning systems, a high-temperature and high-pressure gaseous refrigerant is condensed in a condenser. The expansion valve allows the condensed liquid refrigerant to undergo adiabatic expansion to be changed into a low-temperature and low-pressure refrigerant, which is evaporated in an evaporator, and then returned to the compressor. The evaporator exchanges heat with air from the vehicle compartment, thereby performing cooling.
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