Engineering Board Exam Reviewer · Thermodynamics · medium
In a vapor-compression refrigeration cycle, h at evaporator exit = 390 kJ/kg, h at compressor exit = 425 kJ/kg, and h at condenser exit = 250 kJ/kg. What is the heat rejected in the condenser per kg?
- 140 kJ/kg
- 35 kJ/kg
- 175 kJ/kg
- 675 kJ/kg
Answer
C. 175 kJ/kg
Solution
qcond = h2 - h3 = 425 - 250 = 175 kJ/kg (= RE + W = 140 + 35).
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