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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
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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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: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. =
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
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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