A condenser for a large refrigerator is a four-shell-eight-tube-pass heat exchanger. The condensing fluid is ammonia at 40ºC and the overall heat transfer coefficient is 500 W/m^2?K. 10 kg/s of water at 5ºC, heated to 30ºC, is used to cool the ammonia. Determine the mass flow of ammonia if its heat of vaporization is 1102 kJ/kg and then determine the surface area of the heat exchanger.

What will be an ideal response?




Physics & Space Science

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