Th10Quizzes - mae 204 J THERMODYNAMICS Summer 2010 Quiz 1 4...

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mae 204 J THERMODYNAMICS Summer 2010 Quiz 1 4 lbs of liquid water and 1 lb of water vapor are contained in a piston cylinder device at 60 psia. Heat is added until all the water is vaporized and the temperature has been increased to 320 F. Determine the heat requires and the work done. Sketch a temperature-volume property diagram for the process.
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mae 204 J THERMODYNAMICS Summer 2010 Quiz 1 () Btu 335.2 lb/Btu - ft 778 lb ft 260811.36 W lb ft 260811.36 W ) 449 . 1 (7.4863 144 60 5 W ) v (v p m pdv W Btu 335.1 W 3402. - 3836.9 W 429.24) (1109.6 5 3736.9 W ) u (u m Q W Btu 3736.9 445.32) (1192.7 5 ) h (h m Q /lb ft 7.4863 v Btu/lb 1192.7 h Btu/lb 1109.6 u F 320 psia, 60 @ Table Superheat /lb ft 1.449 v .01738) (7.1766 .2 .01738 v v x v v 445.32 915.61 .2 262.2 h x h h Btu/lb 429.24 836.13 .2 262.02 u x u u .2 5 1 mass total mass gas x 1 2 1 2 1 2 3 2 2 2 3 1 f g f 1 f 1 fg f 1 = = = × × × = × × = = = = × = × = = × = × = = = = = × + = × + = = × + = × + = = × + = × = = = = = ave = 64 T 1 60 psia 2 320 F v 1 lb vapor 4 lb liquid 60 psia
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mae 204 J THERMODYNAMICS Summer 2010 Quiz 2 Liquid water is heated with water vapor in a mixing vessel maintained at 500 kPa. Water vapor at 1MPa, 300 C flows at a rate of 100 kg/min through a control valve into
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Th10Quizzes - mae 204 J THERMODYNAMICS Summer 2010 Quiz 1 4...

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