1. Consider the scheme shown in the figure T, = 200°C for producing fresh water from salt water. The conditions are as shown in the figure. Assume that the properties of salt water are the same as those of pure water. The outer walls of heat exchanger, Heatem flash evaporator and pump can be considered as thermally insulated. The pressure drop of a continuous stream across the heat exchanger and heater are negligible. exc (ins a) Determine the ratio ("7/m.), which gives the mass fraction of salt water purified. 2 = 70 b) Determine the specific pump work, in kJ per kg of T2= liquid seawater. Liquid seawater in c) Determine the specific heat input for the heater, in kJ per kg of liquid seawater. d) Determine the specific entropy production for the flash evaporator and the heater, in kJ/K per kg of liquid seawater.

1. Consider the scheme shown in the figure T, = 200°C for producing fresh water from salt water. The conditions are as shown in the figure. Assume that the properties of salt water are the same as those of pure water. The outer walls of heat exchanger, Heatem flash evaporator and pump can be considered as thermally insulated. The pressure drop of a continuous stream across the heat exchanger and heater are negligible. exc (ins a) Determine the ratio ("7/m.), which gives the mass fraction of salt water purified. 2 = 70 b) Determine the specific pump work, in kJ per kg of T2= liquid seawater. Liquid seawater in c) Determine the specific heat input for the heater, in kJ per kg of liquid seawater. d) Determine the specific entropy production for the flash evaporator and the heater, in kJ/K per kg of liquid seawater.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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