A rigid 35-ft3 tank contains water initially at 250 F,
Chapter 7, Problem 236EUP(choose chapter or problem)
Problem 236EUP
A rigid 35-ft3 tank contains water initially at 250 F, with 50% liquid and 50% vapor by volume. A pressure-relief valve on top of the tank is set to 150 lbf/in.2 (the tank pressure cannot exceed 150 lbf/in.2; water will be discharged instead). Heat is now transferred to the tank from a 400 F heat source until the tank contains saturated vapor at 150 lbf/in.2. Calculate the heat transfer to the tank and show that this process does not violate the second law.
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