Question

Water at 368 K is pumped from a storage tank at the rate of 25 m3/h. The motor for the pump supplies work at the rate of 2 hp. The water passes through a heat exchanger, where it gives up heat at the rate of 42000 kJ/min and delivered to a second storage tank at an elevation of 20 m above the first tank. What is the temperature of the water delivered to the second tank? Assume that the enthalpy of water is zero at 273 K and the specific heat of water is constant at 4.2 kJ/kg.K.​

Answer 1

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