Water (specific heat = 4 k J/kg K) enters a cross flow exchanger (both fluids unmixed) at 10 degree Celsius and flows at the rate of 7.5 kg/s. It cools air (specific heat= 1 k J/kg K) flowing at the rate of 10 kg/s from an inlet temperature of 130 degree Celsius. For an overall heat transfer coefficient of 750 k J/m^2 hr degree and the surface area is 220 m^2, determine the NTU
Answer:
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