One kg of water in a piston-cylinder assembly, initially at 1.5 bar and 200 C, cools...

One kg of water in a piston-cylinder assembly, initially at 1.5 bar and 200 C, cools at constant pressure with no internal irreversibilities to a final state where the water is a saturated liquid. For the water as the system, determine the work, the heat transfer, and the amounts of exergy transfer accompanying work and heat transfer, each in kJ. Let T0 = 20 °C, p0=1 bar and ignore the effects of motion and gravity.
THERE ARE SOME DIFFERENT ANSWERS TO THIS QUESTION. I FOUND AN ANOTHER ANSWER, I HAVE MANY QUESTION MARKS IN MY MIND. ADDITION OF EXERGY TRANSFER ACCOMPANYING WORK AND HEAT SHOULD BE EQUAL TO E2-E1. SINCE ITS INTERNALLY REVERSIBLE. ON THE OTHER HAND WHEN I USE 'E2-E1=(U2-U1)+P0×(V2-V1)-T0(S2-S1)' I FIND AN ANOTHER NUMBER. PLEASE HELP.

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samet mamat answered 1 year ago

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