Agricultural Engineering > GATE 2017 > Heat Exchanger
Hot water at 95°C is sent through a countercurrent tube-in-tube heat exchanger with cold water entering at 25°C. Hot/cold water specific heat capacity is 4.2 kJ/kg K. Flow rates of hot and cold water are 2.7 and 4.1 kg/min, respectively. Overall heat transfer coefficient is 55 W/m² K and the area of heat transfer is 5 m². Cold water outlet temperature from the heat exchanger in °C will be
Correct : 55
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