In a counterflow heat exchanger, hot fluid enters at 60°C and cold fl – McqOptions

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1.	In a counterflow heat exchanger, hot fluid enters at 60°C and cold fluid leaves at 30°C. 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 10 kJ/kgK and that of the cold fluid is 5 kJ/kgK. The Log Mean Temperature Difference (LMTD) for the heat exchanger in ºC is
A.	15
B.	30
C.	35
D.	45
Answer» C. 35

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