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Unformatted text preview: 3-1CYes, since the chemical composition throughout the tank remain the same. 3-9CCase (c) when the pan is covered with a heavy lid. Because the heavier the lid, the greater the pressure in the pan, and thus the greater the cooking temperature. 3-25EComplete the following table for H2 O: T, F P, psia u, Btu / lbm Phase description 300 67.03 782 Saturated mixture 267.22 40 236.02 Saturated liquid 500 120 1174.4 Superheated vapor 400 400 373.84 Compressed liquid 3-28Complete the following table for Refrigerant-134a: T, C P, kPa v, m3/ kg Phase description -8 320 0.0007569Compressed liquid 30 770.640.015 Saturated mixture -12.73180 0.11041Saturated vapor 80 600 0.044710Superheated vapor 3-36 A piston-cylinder device that is filled with R-134a is heated. The final volume is to be determined. AnalysisThis is a constant pressure process. The initial specific volume is /kgm1595.kg10m595.1331mVvThe initial state is determined to be a mixture, and thus the pressure is the saturation pressure at the given temperature 12)-A(TablekPa100C26.4-@sat 1PPThe final state is superheated vapor and the specific volume is 13)-A(Table/kgm30138...
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This note was uploaded on 09/05/2010 for the course MEEN 315 taught by Professor Ramussen during the Summer '07 term at Texas A&M.
- Summer '07