SSC JE Mechanical Engineering 11 Oct 2020 Shift 1 Papers

Question : 197 of 200

Marks: +1, -0

A Carnot refrigeration is used to maintain temperature at -30°C that requires 1.28 kW per ton of refrigeration. The heat rejected in kW per tonne refrigeration is:

3.5
2.78
4.78
5.45

Validate

Solution:

T_L= - 30°C , W_\input = 1.28 kW

Q_S = 1 TR = 3.5167 kW

Q_R = Q_S + W_\input = 3.51 + 1.28 = 4.79 kW

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