In a heat exchanger, the hot liquid enters with a temperature of 180°C and leaves of 160°C. The cooling fluid enters at 30°C and leaves at 110°C. The capacity ratio of the heat exchanger is
- A. 0.25
- B. 0.40
- C. 0.50
- D. 0.55
Answer: A. 0.25
Explanation: Heat balance: C_h (180-160) = C_c (110-30). 20 C_h = 80 C_c. C_c/C_h = 20/80 = 0.25. Capacity ratio is C_min/C_max. Since C_c < C_h, ratio is 0.25.