Study of various types of Compressors

Jun 29th, 2015
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The refrigeration system consists of four basic components—t h e compressor, the condenser, the liquid receiver, the evaporator, and the control devices. These components are essential for any system to operate on the principles previously discussed. Information on these components is described in the following sections.

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EXPERIMENT No. 1Aim: Study of various types of Compressors used for refrigeration and air conditioning purpose. Introduction:The refrigeration system consists of four basic components-t h e compressor, the condenser, the liquid receiver, the evaporator, and the control devices. These components are essential for any system to operate on the principles previously discussed. Information on these components is described in the following sections. Compressors Refrigeration compressors have but one purpose-to withdraw the heat-laden refrigerant vapor from the evaporator and compress the gas to a pressure that will liquefy in the condenser. The designs of compressors vary, depending upon the application and type of refrigerant. There are three types of compressors classified according to the principle of operation- reciprocating, rotary, and centrifugal. Compressors will not be explained further here except to discuss the special methods used to seal compressors to prevent escape of refrigerant. Many refrigerator compressors have components besides those normally found on compressors, such as unloaders, oil pumps, mufflers, and so on. These devices are too complicated to explain here. Before repairing any compressor, check the manufacturer's manual for an explanation of their operation, adjustment, and repair. External Drive Compressor.-An external drive or open-type compressor is bolted together. Its crankshaft extends through the crankcase and is driven by a flywheel (pul

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