An air-standard diesel cycle has a compression ratio of 18 and a cutoff ratio of 2. At the beginning of the compression process air is at 95 kPa and 27°C. Determine the thermal efficiency. Cutoff ratio:
An air-standard diesel cycle has a compression ratio of 18 and a cutoff ratio of 2. At the beginning of the compression process air is at 95 kPa and 27°C. Determine the thermal efficiency. Cutoff ratio:
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
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Transcribed Image Text:Example 2
An air-standard diesel cycle has a compression ratio of 18 and a cutoff ratio
of 2. At the beginning of the compression process air is at 95 kPa and 27°C.
Determine the thermal efficiency.
Cutoff ratio:
1. =
Transcribed Image Text:TABLE A-17
deal-gas properties of air
T
kJ/kg
kJ/kg-K
P,
200 199.97
210 209.97
220 219.97
230 230.02
240 240.02
250 250.05
260 260.09
270 270.11
280 280.13
kJ/kg
v,
kJ/kg-K
K
kJ/kg
P,
kJ/kg
0.3363 142.56 1707.0 1.29559
0.3987 149.69 1512.0 1.34444
580
590
600
610
620 628.07
2.37348
2.39140
2.40902
586.04
14.38 419.55 115.7
15.31 427.15 110.6
16.28 434.78 105.8
596.52
0.4690 156.82 1346.0 1.39105
0.5477 164.00 1205.0 1.43557
0.6355 171.13 1084.0 1.47824
607.02
2.42644
2.44356
617.53
17.30 442.42 101.2
18.36 450.09
96.92
0.7329 178.28
0.8405 185.45
979.0 1.51917
887.8 1.55848
630
640
638.63
649.22
19.84 457.78
20.64 465.50
92.84
88.99
2.46048
2.47716
0.9590 192.60
808.0 1.59634
650
660
670
659.84
21.86 473.25
85.34
2.49364
1.0889 199.75
1.1584 203.33
738.0 1.63279
23.13 481.01
81.89
670.47
681.14
2.50985
2.52589
285 285.14
706.1 1.65055
24.46 488.81
78.61
290 290.16
295 295.17
1.2311 206.91
1.3068 210.49
1.3543 212.64
676.1 1.66802
647.9 1.68515
75.50
72.56
680
691.82
702.52
713.27
25.85 496.62
27.29 504.45
28.80 512.33
2.54175
2.55731
2.57277
690
69.76
67.07
64.53
298 298.18
631.9 1.69528
700
710
720
300 300.19
1.3860 214.07
621.2 1.70203
724.04
30.38 520.23
2.58810
305 305.22
1.4686 217.67
596.0 1.71865
734.82
32.02 528.14
2.60319
310 310.24
1.5546 221.25
572.3 1.73498
730
745.62
33.72 536.07
62.13
2.61803
315 315.27
1.6442 224.85
549.8 1.75106
35.50 544.02
740
750
760
780
756.44
59.82
2.63280
320 320.29
325 325.31
330 330.34
340 340.42
1.7375 228.42
528.6 1.76690
767.29
37.35 551.99
57.63
55.54
2.64737
1.8345 232.02
1.9352 235.61
508.4 1.78249
489.4 1.79783
778.18
800.03
39.27 560.01
43.35 576.12
2.66176
2.69013
51.64
821.95
843.98
242.82
1.82790
48.08
44.84
2.149
454.1
800
47.75 592.30
2.71787
350 350.49
2.379
250.02
422.2 1.85708
820
52.59 608.59
2.74504
360 360.58
257.24
840
860
880
866.08
888.27
910.56
2.626
393.4 1.88543
57.60 624.95
41.85
2.77170
370 370.67
380 380.77
367.2 1.91313
343.4 1.94001
39.12
36.61
63.09 641.40
2.892
3.176
264.46
2.79783
271.69
68.98 657.95
2.82344
390 390.88
278.93
932.93
674.58
3.481
3.806
4.153
4.522
4.915
321.5 1.96633
301.6 1.99194
900
75.29
82.05 691.28
89.28 708.08
34.31
32.18
30.22
2.84856
286.16
293.43
400 400.98
920
940
960 1000.55
955.38
2.87324
410 411.12
420 421.26
430 431.43
440 441.61
283.3 2.01699
977.92
2.89748
300.69
266.6 2.04142
97.00 725.02
28.40
2.92128
307.99
251.1 2.06533
980 1023.25 105.2
741.98
26.73
2.94468
2.96770
2.99034
3.01260
3.03449
3.05608
5.332
315.30
236.8 2.08870
223.6 2.11161
211.4 2.13407
1000 1046.04 114.0
1020 1068.89 123.4
1040 1091.85 133.3
758.94
25.17
450 451.80
460 462.02
470 472.24
480 482.49
5.775
322.62
776.10
23.72
6.245
6.742
329.97
337.32
793.36
23.29
810.62
827.88
200.1 2.15604
1060 1114.86 143.9
21.14
7.268
344.70
189.5 2.17760
1080 1137.89 155.2
19.98
845.33
862.79
880.35
897.91
18.896 3.07732
17.886 3.09825
16.946 3.11883
16.064 3.13916
190 492.74
7.824
352.08
179.7 2.19876
1100 1161.07 167.1
500 503.02
510 513.32
520 523.63
8.411
9.031
9.684
359.49
366.92
374.36
170.6 2.21952
1120 1184.28 179.7
1140 1207.57 193.1
1160 1230.92 207.2
162.1 2.23993
154.1 2.25997
530 533.98 10.37
381.84
146.7 2.27967
1180 1254.34 222.2
915.57
15.241 3.15916
540 544.35 11.10
389.34
139.7 2.29906
133.1 2.31809
127.0 2.33685
121.2 2.35531
1200 1277.79 238.0
933.33
951.09
968.95
14.470 3.17888
550 555.74 11.86
560 565.17 12.66
570 575.59 13.50
396.86
13.747 3.19834
1220 1301.31 254.7
1240 1324.93 272.3
404.42
13.069 3.21751
411.97
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