Answer: D- Compressor
In a mechanical refrigeration system the refrigerant has the maximum temperature at the compressor.
A vapor compression refrigeration cycle includes the following processes
From 1 to 2, the superheated vapor from the evaporator enters the compressor, and its pressure and temperature increase due to the compression. In a mechanical refrigeration system, the refrigerant has the maximum temperature at the compressor.
From 2 to 3, the pressurized and superheated gas from the compressor moves to the condenser and releases heat into the atmosphere.
From 3 to 4, the high-pressure liquid refrigerant is expanded from high pressure to lower pressure isenthalpically and the temperature of the refrigerant drops and goes to the evaporator.
From 4 to 1, the low-pressure liquid refrigerant absorbs heat from its surrounding environment and evaporates into a gas. The refrigerant is slightly superheated at the outlet of the evaporator.
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