4.) Steam undergoes an Isentropic process where it is initially at 1.30 MPa and 200 C then it expands to a pressure of 0.75 MPa, thus becoming wet steam. What is the dryness of the steam and the change in enthalpy for the process? • 100%, -2766.4 kJ/kg • 98.75, -68.94 kJ/kg • 200%, -2809.7 kJ/kg • 96.95%, -105.94 kJ/kg
4.) Steam undergoes an Isentropic process where it is initially at 1.30 MPa and 200 C then it expands to a pressure of 0.75 MPa, thus becoming wet steam. What is the dryness of the steam and the change in enthalpy for the process? • 100%, -2766.4 kJ/kg • 98.75, -68.94 kJ/kg • 200%, -2809.7 kJ/kg • 96.95%, -105.94 kJ/kg
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
Related questions
Question
Transcribed Image Text:1.30 (191.64)
1.35 (193.38)
P(t Sat.)
10 v
10 v
151.25 2591.0 2787.6
6.4953
145.86 2591.9 2788.8
6.4821
Sat.
143.08 2555.1 2741.1
145.60 2566.2 27555
148.07 2577.0 2769.5
150.48 2587.6 2783.2
152.84 25979 2796.6 6.5146
137.06 2551.8 2736.8
139.53 2563.1 27515
141.94 2574.1 2765.7
144.30 2584.8 27796
146.61 2595.3 27932
6.3935
3.4254
6.3683
6.4008
6.4320
6.4622
6.4914
175
180
185
190
195
6.4561
6.4858
155.16 2608.0 2809.7
157.45 2617.9 2822.6
159.70 2627.7 2835.3 6.5960
161.92 2637.3 2847.8 6.6217
164.12 2646.7 2860.1 6.6468
148.87 2605.6 2806.5 6.5197
151.10 2615.6 2819.6 6.5472
153.29 2625.5 2832.4
155.45 2635.2 2845.1
157.59 2644.8 2857.5
6.5425
6.5696
6.5739
6.5999
6.6253
200
205
210
215
220
166.29 2656.1 2872.3 6.6713
168.43 2665.3 2884.3 6.6953
170.56 2674.4 2896.2 6.7189
172.66 2683.5 2907.9 6.7419
174.75 2692.4 2919.6 6.7645
159.70 2654.2 2869.8 6.6501
161.78 2663.5 2881.9 6.6743
163.84 2672.7 2893.9 6.6980
165.88 2681.9 2905.8
167.91 2690.9 2917.6
225
230
235
240
245
6.7213
6.7441
Enthalpy
Entropy
Internal Energy
Sat,
Liquid
Sat.
Vapor
Specific Volume
Sat.
Vapor
Sat
Liquid
Sat.
apor
Sat.
LSquid
Sat
Sat.
Evap.
Evap.
Evap.
Pres.
MP
Temp
Liquid
10,
Vapor
10,
h/
h,
S
u,
708.64 1866.1 2574.7
711.00 1864.2 2575.2
713.34 1862.2 2575.6
715.66 1860.3 2576.0
717.95 1858.S 2576.4
709.47 2057.0 2766 4 2.0200 4.6647 6.6847
711.85 2055.2 2767.0
714.20 2053.4 2767.5
716.52 2051.6 2768.1 2.0359 4.635S 6.6714
718.83 2049.8 2768.6 2.0411 4.6260 6.6670
SIIII
255.6
2.0253 4.6549 6.6802
2.0306 4.6451 6.6758
167.78
.76 168.32- LI121|
168.86 1.1128
252.4
249.3
246.3
243.3
.75
.77
,78 169.39 1.1135
169.91 11142
.79
80 170.43 1.1148
170.95 1.11S5
171.46 1.1161
171.97 1.1168
172.47 1.1174
721.11 2048.0 2769.1 2.0462 4.6166 6.6628
723.38 2046.3 2769,7 2,0513 4.6073 6.6585
725.62 2044,5 2770.2 2,0563 4.5981 6.6544
727.83 2042,8 2770.7 2.0612 4.5890 6.6502
2.0662 4.5800 6.6462
720.22 1856.6 2576.8
82
83
.84
240,4
237.6 722.47 1854.7 2577.2
234.9 724.70 1852.9 2577.6
232.2 726.91 1851.1 2578.0
229.5
729.10 1849.2 2578.3 730.04 2041.1 2771.2
.85
.86
.87
88
89
172.96 1.1181
173.46 1.1187
1.1193
227.0
224.5
222.0
219.6 737.66 1842.1 2579.8
217.3
731.27 1847.4 2578.7
733.42 1845.7 2579.1
735.55 1843.9 2579.4
732.22 2039.4 2771.6 2.0710 4.5711 6.6421
734.38 2037.7 2772.1 2.0758 4.5623 6.6381
736.52 2036.1 2772.6 2.0806 4.5536 6.6342
738.64 2034.4 2773.0
740.75 2032.8 2773.5
2.0853 4.5450 6.6303
2.0900 4,5364 6.6264
173.94
174.43
1.1200
1.1206
739.75 1840.4 2580.1
174.90
Transcribed Image Text:4.) Steam undergoes an Isentropic process where it is initially at 1.30 MPa
and 200 C then it expands to a pressure of 0.75 MPa, thus becoming wet
steam. What is the dryness of the steam and the change in enthalpy for the
process?
• 100%, -2766.4 kJ/kg
• 98.75, -68.94 kJ/kg
• 200%, -2809.7 kJ/kg
• 96.95%, -105.94 kJ/kg
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