Auxiliary Machinery. Test 76

What are the four processes in a refrigeration cycle ?

What is the function of the compressor ?

To pump the liquid stored in the auxiliary refrigerant tank.
To compress the refrigerant.
To compress hot air and to pump the liquid stored in the auxiliary refrigerant tank.
To compress hot air.

What is the function of the expansion valve ?

To increase the pressure of the liquid refrigerant.
To reduce the pressure of the liquid refrigerant.
To regulate the flow of refrigerant to the evaporator.
To regulate the flow of refrigerant to the evaporator and to reduce the pressure of the liquid refrigerant.

In the refrigeration system, the low pressure side would be from _____

What is the function of the evaporator ?

In a refrigeration system, a precooler is sometimes installed between the _____

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