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Question

For a refrigerating machine, capacity is expressed as ________.

एक रेफ्रिजरेटिंग मशीन के लिए, क्षमता ________ के रूप में व्यक्त की जाती है।

A.

rate of heat extraction from the space being cooled

B.

gross weight of the machine

C.

inside volume of the cabinet

D.

the lowest temperature attained

Answer ( Option A)

rate of heat extraction from the space being cooled

Solution

Refrigeration Effect (RE) is amount of heat extracted from a cooling space whereas, Refrigeration Capacity (RC) is defined as the rate at which heat is extracted from a cooling space.

So, we can write RC  = m x RE

Where, m = Mass flow rate (kg/s),

RC = Refrigeration capacity (kW),

 RE = Refrigeration effect (kJ/kg)

Hence, the correct option is (A).

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