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A cross flow type air heater has an area of 50 cm2. The overall heat transfer coefficient is 100 W/m2 K and heat capacity of both hot and cold stream is 1000 W/m K. The value of NTU is

A cross flow type air heater has an area of 50 cm2. The overall heat transfer coefficient is 100 W/m2 K and heat capacity of both hot and cold stream is 1000 W/m K. The value of NTU is Correct Answer 500

NTU = A U/C MIN = 5.

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