Homework 2 Solutions

# Homework 2 Solutions - 91:C(1490 S.2(ll 0 Problem 4-26...

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Unformatted text preview: 91 :C (1490* S .2: '(ll 0'.) Problem 4-26: 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 Lab-95 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 ‘ (9-5le7 560‘. lfgrwagmfﬁ. m D7406. 950 521.74 0.0 3 ml tr ~ 80 500 335m un w 5e41,», a War Problem 4-27: Complete the table for refrigerant-134a: T, °C P, kPa v, mszlgg Phase description -12 320 000074 9» Commas . l 30 770.0% 0.0065 Std: erap. mm 19-7 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 4-30: A piston-cylinder device contains 0.85 kg of refrigerant-134a 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 refrigerant-134a 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 reﬁigerant-134a. _ \$U+Ew11u m: 933 L43 ﬂCtr/alt R—liwa m? L T) : -1066 Ta; i: 1 I at: 0.25 m ; } ye - 83 M. 1 3 FIND: @\ Fa: ? QB) bvl-a ’7 LC) bun-a" 7‘ I PDA Sow‘ﬂou‘, F139 or palm iy a» . I EFy: PA» Mva «o ' PA MP3 P: 125+ “P3 A - l .8!) __ (gg’mo)+ Q? (q Q TrCOJQ/S) _.P,.:JP,|:__P; .: 903%,)7 Porn. _ ..m>«im7t_ mam,- (fa/went“ .. (by WI% Pa, : Wm WV) Ta, : Lsoc PO: qotq knock a“) T, : _w‘ c we Cal/x 43w) 01M W WJx/Ama {JmpW’lm «(mm CaH-S V, 3 0-21on w3/pﬂ Va: 0. 9511‘! “"3/l’3 {>\/' 1-93" M(V£L‘Vi) ‘- (0'85£‘3)(0—33‘4\{ v0-93uép ~ 0. 0&057 m3 Avie; : 0.03057 m3 . 3 0x180 (n; Cwa Sat/:M: ‘0‘ : \$4,511 ‘kj/Léj 1% : [416,3 ‘07th) My AH” : MWVV‘A‘ : Wﬁﬂﬂws — ma) mm W Problem 4-80: 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 W-9W 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 4-90: Determine the speciﬁc volume of superheated water vapor at 3.5 MPa and 450 °C based on (a) the ideal-gas 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 ‘7’ 793-13 ; ms —-- '1 __'_.._————‘ To W7. I v; €63 ; ((DﬁmQXcméissS) P v: 13.061173 Wg/kﬂ 03% 10mm in lanes; V: w-Ocllqg M3” 1 WWW ‘ exmi MM (S Kim? Vew W “A Low WM Q03 9, ‘ 0.31793 ‘70 ...
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