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TH10Set04

# TH10Set04 - 15 a R − PS4-1 430.289 430.28 419.04 kJ/kg h...

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Problem Set 4, PS4 due Wednesday May 26 A 15 ft 3 rigid tank contains a saturated mixture of liquid and vapor R-134a at 30 psi. If the saturated liquid occupies 10% of the volume, determine the quality and total mass of the refrigerant in the tank. Compare the specific volume, internal energy and enthalpy of compressed liquid water at 100 C and 15 MPa using the saturated liquid approximation, the steam tables and the EES program. PS4-2 PS4-1 2-79 Determine the specific volume of superheated steam at 10 MPa and 400 C using, a) the ideal gas equation, b) the general compressibility chart and c) the steam table. Calculate the error in a) and b). PS4-3

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3 ft 15 psia
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Unformatted text preview: 15 psia 30 134a R − PS4-1 430.289 430.28 419.04 kJ/kg h, 414.749 414.74 418.94 kJ/kg u, .001036 .001036 .001044 /kg m , v EES 7 TableA ion approximat 15MPa 100C, @ Water 59-2 3 − 15) p 100, T ater, enthaply(w h 15) p 100, T water, intenergy( u 15) p 100, T er, volume(wat v : Statements EES C 100 @ h MPa) 15 p C, 100 @(T h : h for ion Approximat f = = = = = = = = = = = = PS4-2 ( ) 3 3 3 R R 3 m .02641 v Table Superheat 6, A Table c) m .0264 m .03107 .85 p RT Z v .85 Z .453, kPa 22,090 kPa 10,000 p 1.04, 647.3K 673.15K T b) .03107m 10,000 K 400 273.15 .4615 p RT v a) 79-2 = − = × = = = = = = = = + × = = PS4-3...
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TH10Set04 - 15 a R − PS4-1 430.289 430.28 419.04 kJ/kg h...

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