An ideal regenerative cycle is executed with steam generation at 10 MPa and 600 deg C. Before condensation at 0.005 MPa, steam is extracted for feedwater heating first at 2.5 MPa and second at 0.6 MPa. On the basis of 1 kg of throttle steam, find: a. m1 and m2 in kg/kg b. ec in percent c. ee in percent Reminder: 1. For values taken from the steam tables: Use them as is, do not round off. 2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places.
An ideal regenerative cycle is executed with steam generation at 10 MPa and 600 deg C. Before condensation at 0.005 MPa, steam is extracted for feedwater heating first at 2.5 MPa and second at 0.6 MPa. On the basis of 1 kg of throttle steam, find: a. m1 and m2 in kg/kg b. ec in percent c. ee in percent Reminder: 1. For values taken from the steam tables: Use them as is, do not round off. 2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
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An ideal regenerative cycle is executed with steam generation at 10 MPa and 600 deg C. Before condensation at 0.005 MPa, steam is extracted for feedwater heating first at 2.5 MPa and second at 0.6 MPa. On the basis of 1 kg of throttle steam, find:
a. m1 and m2 in kg/kg
b. ec in percent
c. ee in percent
Reminder:
1. For values taken from the steam tables: Use them as is, do not round off.
2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places.
Transcribed Image Text:Table 3. Vapor
.60 (158.85)
P(t Sat.)
56 (156.17)
58 (157.53)
10 v
10' v
10' v
6.7600
315.7 2567.4 2756.8
Sat.
336.9 2565.1 2753.8
325.9 2566.3 2755.3 6.7714
6.7832
256.0 2448.2 2601.8
261.7 2459.6 2616.7
267.3 2470.8 2631.1
272.7 2481.6 2645.2
277.9 2492.2 2658.9
6.3732
6.4127
6.4507
6.4872
6.5224
6.3965
6.4354
100
105
110
115
120
277.0 2453.6 2608.7
282.9 2464.7 2623.1
288.7 2475.4 2637.1
294.3 2486.0 2650.8
299.8 2496.2 2664.1
6.4203
6.4585
6.4953
6.5307
266.2 2450.9 2605.3
272.0 2462.2 2619.9
277.6 2473.I 2634.1 6.4728
283.1 2483.8 2648:0
288.5 2494.2 2661.5-
6.5087
6.5434
6.5649
283.1 2502.5 2672.3
288.1 2512.6 2685.5
293.1 2522.5 2698.3
297.9 2532.2 2711.0
302.7 2541.7 2723.4
6.5563
125
130
135
140
145
305.2 2506.3 2677.2
310.5 2516.J 2690.0
315.7 2525.8 2702.6
320.8 2535.3 2715.0
325.9 2544.7 2727.2
6.5980
6.6300
6.6610
6.6912
6.7205
293.8 2504.4 2674.8
298.9 2514.4 2687.8
304.0 2524.2 2700.5
309.0 2533.8 2713.0
313.9 2543.2 2725.3
6.5769
6.6093
6.6406
6.6711
6.7007.
6.5890
6.6 208
6.6515
6.6814
150
160
170
180
190
330.8 2553.9 2739.2
340.6 2571.9 2762.7
350.2 2589.6 2785.7
359.6 2606.8 2808.2
368.9 2623.8 2830.4
6.7490
6.8040
6.8564
6.9067
6.9551
318.7 2552.5 2737.4
328.3 2570.7 2761.1
337.6 2588.5 2784.3
346.7 2605.8 2806.9
355.7 2622.9 2829.2
6.7295
6.7849
6.8377
6.8883
6.9370
307.5 2551.1 2735.6
316.7 2569.5 2759.5
325.8 2587.4 2782.8
334.7 2604.9 2805.7
343.4 2622.0 2828.1
6.7105
6.7663
6.8195
6.8705
6.9194
200
210
220
230
240
378.1 2640.5 2852.2
387.1 2657.1 2873.9
396.1 2673.4 2895.3
405.0 2689.7 2916.5
413.8 27059 2937.6
7.0018
7.0470
7.0909
7.1335
7.1750
364.6 2639.7 2851.2 6.9839
373.4 2656.3 2872.9, 7.0293
382.1 2672.8 2894.4
390.7 2689.1 2915.7
399.2 2705.3 2936.8
7.0733
7.1160
7.1577
352.0 2638.9 2850.1 - 6.9665
360.5 2655.6 2871.9 7.0121
369.0 267.2.1 2893.5
377.3 2688.5 2914.8
385.6 2704.7 2936.1
7.0562
7.0991
7.1409
Transcribed Image Text:Table 2. Saturation: Pressures
Enthalpy
Entropy
Internal Energy
Sat,
Specific Volume
Se.
Vagor
10,
Sat.
Vapor
Sat
Liquid
h,
Sat.
Vapor
Sat,
Liquid
Sat.
Evap.
Temp
Sat.
Liquid
Evap.
Vapor
Pres.
MP
Te
Evap.
Pre
MP
u,
h,
10
657,3 548.59. 1991.9 2540.5 548.89 2172.4 2721.3
646.3 551.18 1990.0 2541.2 551.48 2170.7. 2722.I
635.7 553.72 1988.1 2541.8
625.4 556.23 1986.2 2542.4
615.4 558.71 1984.3 2543.0
1.6408 5.3801 7.0209
1.6472 5.3677 7.0149
554.02 2168.9 2723.0 1.6535 5.3555 7.0090
556.54 2167.2 2723.8 1.6597 5.3435 7.003)
559.02 2165.5 2724.5 1.6658 5.3317 6.997
16
130.60 1.0703
131.21 1.0709
131.81 1.0715
132.39 1.0720
132.97 1.0726
.15
.76
.77
.78
.79
275
280
200
205
561.47 2163.8 2725.3 1.6718 5.3201 6.9910
380
305
310
315
320
133.55 1.0732 605.8 561.15 1982.4 2543.6
134.11 1.0737 596.5 563.56. 1980.6 2544.1 563.88 2162.2, 2726.1 1.6777 5.3087 6 9
134.67 1.0743
135.22 1.0749
135.76 1.0754
587.5 565.94 1978.8 2544.7 566.27 2160.6 2726.8 1.6835 5.2974 6.9810
578.7 568.29 1977.0 2545.3
570.2
.80
.81
.82
.83
.84
568.62 2158.9 2727.6 1.6893 5.2863 6.9756
$70.95 2157.3 2728.3 1.6950 5.2754 6.9704
570.61 1975.2 2545.8
573.25 2155.8 2729.0 1.7006 5.2646 6.965)
325
330
335
340
136.30 1.0759
136.83 1.0765
137.35 1.0770
137.87 1.0775
138.38
562.0
554.0
546.3
538.7
$31.4
572.90 1973.5 2546.4
$75.16 1971.7 2546.9 575.52 2154.2 2729.7 1.7061 5.2540 6.9601
577.40 1970.0 2547.4
579.61 1968.3 2547.9
581.79 1966.6 2548.4
577.76- 2152.6 2730.4 1.7116 5.2435 6.9551
579.97 2151.I 2731.1 1.7169 5.2332 6.9502
582.16 2149.6 2731.8 · 1.7222 5.2230 6.9453
.85
86
.87
-88
.89
1.0781
524.3
517.3
510.6
504.0
497.6
583.95 1965.0 2548.9
586.09 1963.3 2549.4
S88.20 1961.7 2549.9
$90.29 1960.1 2550.4
592.36 1958.5 2550.9
584.33 2148.1 2732.4 1.7275 5.2130 6.940s
586.47 2146.6 2733.1 1.7327 5.2031 6.9358
588.59 2145.1. 2733.7 1.7378 5.1933 6.9311
590.68 2143.7 2734.4 1.7428 5.1836 6.9265
592.75 2142.2 2735.0
.90
.91
.92
.93
.94
138.88
1.0786
139.38
1.0791
139.87
1.0796
140.36 1.0801
140.84
370
1.0806
1.7478 5.1741 6.9219
.95
.96
.97
.98
.99
141.32 1.081I
141.79
375
380
385
390
395
1.0816
142.26 1.0821
142.72 1.0826
1.0831.
491.4
485.3
479.4
473.6
468.0
594.81 2140.8 2735.6 1.7528 5.1647 6.9175
596.83 2139.4 2736.2 1.7577 5.1554 6.9130
598.84 2138.0 2736.8 1.7625 5.1462 6.9087
600.41 1952.3 2552.7 600.83 2136.6 2737.4 1.7673 5.1371 6.9044
1.7720 5.1281 6.9001
594.40 1956.9 2551.3
596.42 1955.4 2551.8
598.43 1953.8 2552.2
143.18
602.37 1950.8 2553.1
602.80 2135.2 2738.0
604.74 2133.8 2738.6
608.59 2131.1 2739.7 1.7858 5.1018 6.8877
612.36 2128.4 2740.8 1.7948 5.0848 6.8796
616.06 2125.8 2741.9
619.68 2123.2 2742.9
1.06
1.0
1.0
1.0
1.0
1.0836
604.31 1949.3 2553.6
608.14 1946.3 2554.4
611.90 1943.4 2555.3
615.59 1940.5 2556.1
619.21 1937.6 2556.9
1.7766 5.1193 6.8959
41
.42
43
44
143.63
144.53 1.0845
145.40
462.5
451.9
441.7
432.1
422,8
1.0855
1.0864
1.0873
1.8036 5.0681 6.8717
1.8122 5.0518 6.8641
146.26
147.10
1.8207 5.0359 6.8565
626.26 1932.1 2558.4 626.76 2118.2 2744.9 1.8290 5.0202 6.8492
629.70 1929,4 2559.1 630.21 2115.7 2745.9 1.8371 5.0049 6.8420
633.60 2113.2 2746.8 1.8451 4.9898 6.8349
1.8530 4.97S1 6.8280
1.1
1.
1.
1.
623.25 2120.7 2743.9
A5
46
47
1.0882
148.74 1.0891
149.54 1.0900
150.32
147.93
414.0
405.5
397.4
389.6
382.1
622.77 1934.9 2557.6
1.0909
151.10 1.0917
633.08 1926.8 2559.8
636.40 1924.1 2560.6
49
636.94 2110.8 2747.8
50
51
52
53
54
639.68 1921.6 2561.2 640.23 2108.5 2748.7 1.8607 4.9606 6.8213
642.90 1919.O 2561.9 643.46 2106.1 2749.6 1:8682 4.9464 6.8146
646.65 2103.8 2750.5
649.78 2101.5 2751.3
652.87 2099.3 2752.1
151.86
1.0926
374.9
368.0
361.3
354.9
348.7
152.60
1.0934
153.34 1.0942
154.06 1.0951
154.78
646.08 1916.5 2562.6
649.20 1914.0 2563.2
652.28 1911.6 2563.9
1.8757 4.9324 6.8081
1.8830 4.9187 6.8017
1.8902 4.9052 6.79SS
1.0959
55
.56
57
58
99
155.48 1.0967
156.17 1.0975
156.86 1.0983
157.53
342.7
336.9
331.3
325.9
320.7
655.32 1909.2 2564.5
658.32 1906.8 2565.1 658.93 2094.8 2753.8
661.27 1904.4 2565.7 661.90 2092.7 2754.5
664.18 1902.I 2566.3
667.06 1999.8 2566.8
655.93 2097.0 2753.0
1.8973 4.8920 6.7893
1.9043 4.8789 6.7832
1.9112 4.8661 6.7773
1.9180 4.8535 6.7714
1.9246 4.8411 6.7657
1.0991
664.83 2090.5 2755.3
667.71 2088.4 2756.1
158.20
1.0999
.60
.61
.62
.63
54
158.85
1.1006
315.7
310.8
306.0
301.5
297.0
669.90 1897.5 2567.4
672.70 1895.3 2568.0
675.47 1893.0 2568.5
678.20 1890.8 2569.0
680.90 1888.7 2569.6
670.56 2086.3 2756.8
673.37 2084.2 2757.5 1.9377 4.8168 6.7545
676.15 2082.1 2758.3
678.89 2080.1 2759.0
681.60 2078.0 2759.6
159.50
1,1014
1.9312 4.8288 6.7600
160.14
1.1021
160.77 1.1029
161.39 1.1036
1.9441 4.8049 6.7490
1.9504 4.7932 6.7436
1.9566 4.7817 6.7383
.65
.66
.67
68
162.01 1.1044
162.61 1.1051
163.21
292.7
288.5
284.4
280.5
276.6
683.56 1886.5 2570.1
686.20 1884.4 2570.6
688.80 1882.3 2571.1
691.38 1880.2 2571.6
693.93 1878.1 2572.0
684.28 2076.0 2760.3
686.93 2074.0 2761.0
689.55 2072.1 2761.6
692.13 2070.1 2762.3
694.69 2068.2 2762.9
1.9627 4.7703 6.7331
1.9688 4.7591 6.7279
1.9748 4.7481 6.7228
1.9807 4.7372 6.7178
1.9865 4.7264 6.7129
1.1058
163.81
1.1066
164.39
1.1073
70
71
72
73
74
164.97
165.55
166.11
166.67
167.23 1.1108
1.1080
1.1087
1.1094
1.1101
272.9
269.2
265.7
262.2
258.9
696.44 1876.1 2572.5
698.93 1874.0 2573.0
701.40 1872.0 2573.4
703.84 1870.0 2573.9
706.25 1868.1 2574.3
697.22 2066.3 2763.5
699.72 2064.4 2764.1
702.20 2062.5 2764.7
704.64 2060.7 2765.3
707.07 2058.8 2765.9
1.9922 4.7158 6.7080
1.9979 4.7053 6.7032
2.0035 4.6950 6.6985
2.0091 4.6848 6.6938
2.0146 4.6747 -6.6892
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