hw2 solutions - 1. a) Saturated Steam m3 @ 250C , 4 MPa =...

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1. a) Saturated Steam kg m MPa C 3 4 , 250 @ 04978 . 0 = ° kg kJ h MPa C 2800 4 , 250 @ = ° kg kJ u MPa C 2601 4 , 250 @ = ° K kg kJ s MPa C = ° 07 . 6 4 , 250 @ b) Saturated Water kg m C 3 273 @ 0014 . 0 = ° kg kJ h C 1193 273 @ = ° kg kJ u C 1200 273 @ = ° K kg kJ s C = ° 3 273 @ c) Water-vapor mixture @ 425kPa and 70% quality: g f fg x x x = + 7 . 0 kg m kPa 3 425 @ 307 . 0 = kg kJ h kPa 2103 425 @ = kg kJ u kPa 1969 425 @ = K kg kJ s kPa = 36 . 5 425 @
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d) Superheated steam @ 500kPa and 200°C kg m kPa C 3 500 , 200 @ 4251 . 0 = ° kg kJ h kPa C 9 . 2855 500 , 200 @ = ° kg kJ u kPa C 3 . 2643 500 , 200 @ = ° K kg kJ s kPa C = ° 9781 . 6 500 , 200 @ e) Sub-cooled water @ 5MPa and 100°C kg m MPa C 3 5 , 100 @ 00104 . 0 = ° kg kJ h MPa C 85 . 422 5 , 100 @ = ° kg kJ u MPa C 65 . 417 5 , 100 @ = ° K kg kJ s MPa C = ° 303 . 1 5 , 100 @ T S P v critical point liquid liquid/vapor saturated liquid saturated vapor steam critical point subcooled liquid water/vapor mixture saturated water line saturated vapor line superheated vapor
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2) Given: therm t ACH to reduced be can ACH ft A ft H F lbm Btu c F T R lbm ft psia R psia P Tables From p out air atm 25 . 1 $ cos % 65 2 5 2500 10 24 . 0 40 3704 . 0 13 : 2 3 = = = = ° = ° = = = η
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hw2 solutions - 1. a) Saturated Steam m3 @ 250C , 4 MPa =...

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