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Unformatted text preview: 91 :C (1490* S
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'(ll 0'.) Problem 426: Complete the table for H20: 3 so 800 3162.2 In= (Vﬂ M 4 X W3 2 (0,3) (5mm r) +(o‘7 )(9706 3) 1 1800 gamu
9733,5 S‘WJL 0.8(H7
WW5 Mw aWed’ty {kw +61wa Lab95 Wax &NUV‘/ 9”“ Chiba/5 Comger} Helma 'pemeww {’3!‘  A G» 331/91 ' N (ml/4,3 W &W #241 "was T, °C P1 kPa h, kJ/kg I x Phase description
 mum 200 @0H5 0.7 ml. VaP. {mm
, 140 363,53 1800 ‘ (95le7 560‘. lfgrwagmfﬁ. m
D7406. 950 521.74 0.0 3 ml tr ~
80 500 335m un w 5e41,», a War Problem 427: Complete the table for refrigerant134a: T, °C P, kPa v, mszlgg Phase description
12 320 000074 9» Commas . l 30 770.0% 0.0065 Std: erap. mm 197 3 550 Q, 037% 0‘8  Saturated vapor
60 600 0.0 wt 323 aﬂth View .00 W3 Can 00 {0W9 away {Mm m +4512; '. Problem 430: A pistoncylinder device contains 0.85 kg of refrigerant134a at 10 °C. The piston that is free to
move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant134a until the temperature is 15 °C. Determine (a) the ﬁnal pressure, (b) the change in
the volume of the cylinder, and (c) the change in the enthalpy of the reﬁigerant134a. _ $U+Ew11u
m: 933 L43 ﬂCtr/alt R—liwa m? L T) : 1066 Ta; i: 1 I
at: 0.25 m ; }
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1% : [416,3 ‘07th) My AH” : MWVV‘A‘ : Wﬁﬂﬂws — ma) mm W Problem 480: A rigid tank contains an ideal gas at 1227 °Cand 200 kPa gage. The gas is cooled until the gage ‘
pressure reads 50 kPa. If the atmospheric pressure is 100 kPa, determine the ﬁnal temperature of the gas. GAME—NH ' , . geHEVt/WC:
T, = 19617 “c
?i 3 9.80 (Nook gage P9,: 55 WM 8613?;
PC = 100 («Pm T! “a and I . ‘ ——~ 9:) abgoixﬁe W9W Ta _ i , ~. J 400‘. P: PIOSSui/‘eg vat/5+ ‘01”, abiolvte WWW (9415?. "0 we ﬁn EWWS: a : 300 We F1  [‘50 My; 5mm Pbs‘ {awe + Po
H _ 75_ k A _ _  __ T‘; ' 3(300 D Problem 490: Determine the speciﬁc volume of superheated water vapor at 3.5 MPa and 450 °C based on (a)
the idealgas equation, (b) the generalized compressibility chart, and (c) the steam tables. Determinethe error
involved in the ﬁrst two cases. Cm BC RN35! 3025'. l>v1 v‘x’T g : (om/as QK)C7;23.15K) \/= s)
[3500 vé 0.0%35 M‘s/1‘3 CM m9.ng W Ar Water; Po : 5294—00 max T : GMTI k C . Sig PL ‘ 9am NJVLEJ Valium: 01587 Z = oCHoa
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 Spring '08
 Chung

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