Q.31. In a counter flow heat exchanger, hot fluid enters at 60℃ and cold fluid leaves at 30℃. Mass flow rate of the hot fluid is 1 kg/s and that of the cold fluid is 2 kg/s. Specific heat of the hot fluid is 10kJ/kgK and that of the cold fluid is 5 kJ /kgK. The Log Mean Temperature Difference (LMTD) for the heat exchanger in ℃ is
(A) 15
(B) 30
(C) 35
(D) 45
Answer: (B)
Explanation:
