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SOLUTIONS: HOMEWORK #6

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AREN 2110 SOLUTIONS FALL 2006 HOMEWORK ASSIGNMENTS 6, 7 and 8 SOLUTIONS: HOMEWORK #6 Chapter 5 Problems 5-45 A number of brass balls are to be quenched in a water bath at a specified rate. The rate at which heat needs to be removed from the water in order to keep its temperature constant is to be determined. Assumptions 1 The thermal properties of the balls are constant. 2 The balls are at a uniform temperature before and after quenching. 3 The changes in kinetic and potential energies are negligible.

Substituting, the mass flow rate of cold water stream is determined to be () ()= 0.864 kg/s − − = 0.5 kg/s 175.92 83.96 kJ/kg 334.91 175.92 kJ/kg m&2 5-106 Feedwater is heated in a chamber by mixing it with superheated steam. If the mixture is saturated liquid, the ratio of the mass flow rates of the feedwater and the superheated vapor is ...

  Water, Steam, Superheated steam, Superheated

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