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• • RECEIVELP <br />MAY 18 2015 <br />VAPOR / COMPRESSION REFRIGERATION CYCLE <br />In the vapor / compression refrigeration cycle, liquid refrigerant at a high pressure is delivered to a metering device, (1). <br />The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. The refrigerant <br />then travels to the evaporator, (2). Heat is absorbed in the evaporator and causes the refrigerant to boil from liquid to <br />vapor. At the outlet of the evaporator, (3), the refrigerant is now a low temperature, low pressure vapor. The refrigerant <br />vapor then travels to the inlet of the compressor, (4). The refrigerant vapor is then compressed and moves to the <br />condenser, (5). The refrigerant is now a high temperature, high pressure vapor. As the refrigerant expels heat, the <br />refrigerant condenses to a liquid. At the condenser outlet, (6), the refrigerant is a high pressure liquid. The high pressure <br />liquid refrigerant is delivered to the metering device, (1), and the sequence begins again. <br />Some accessories that are not shown in the basic diagram are the receiver and accumulator. Use of these components <br />depends on system design and / or on the type of metering device used. A system that uses a thermostatic expansion valve <br />is usually equipped with a receiver, which would be located in the liquid line directly following the condenser. A system <br />that uses a capillary tube or fixed bore metering device is usually equipped with an accumulator, which would be located <br />in the suction line directly following the evaporator. <br />L <br />