Q3/ In refrigeration system uses R22, the evaporator temperature is -10°C and the condenser temperature is 50°C. The system is ideal. Determine using the tables: 1. Compressor work (w). 2. Rejected heat from the condenser. 3. Refrigeration effect (RE). 4. Coefficient of Performance (COP).
Q3/ In refrigeration system uses R22, the evaporator temperature is -10°C and the condenser temperature is 50°C. The system is ideal. Determine using the tables: 1. Compressor work (w). 2. Rejected heat from the condenser. 3. Refrigeration effect (RE). 4. Coefficient of Performance (COP).
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:Refrigerant 22 (Chlorodifluoromethane)
Enthalpy,
kJ/kg
Pres Density, Volume,
sure, kg/m³ m³/kg
MPa Liquid Vapor Liquid Vapor
m.N/m °℃
28.12 -100.00
26.36 -90.00
24.63 -80.00
-42.00
-12.00
-10.00
-8.00
-6.00
Properties of Saturated Liquid and Saturated Vapor
Entropy, Specific Heat
Viscosity,
Thermal Cond, Surface
kJ/(kg-K)
μPa's
Temp., sure,
C. kJ/(kg-K) c/c₂
mW/(mK) Tension, Temp.,*
°C
Liquid Vapor Liquid Vapor Vapor Liquid Vapor Liquid Vapor Liquid Vapor
-100.00 0.00201 1571.3 8.26600 90.71 358.97 0.5050 2.0543 1.061 0.497 1.243 1127 143.6 845.8 7.25 143.1 4.46
-90.00 0.00481 1544.9 3.64480 101.32 363.85 0.5646 1.9980 1.061 0.512 1.237 1080 147.0 699.4 7.67
137.8
4.84
-80.00 0.01037 1518.2 1.77820 111.94 368.77 0.6210 1.9508 1.062 0.528 1.233 1033 150.3 591.0 8.09 132.6 5.25
-70.00 0.02047 1491.2 0.94342 122.58 373.70 0.6747 1.9108 1.065 0.545 1.231 986 153.3 507.6 8.52 127.6 5.68 22.92 -70.00
-60.00 0.03750 1463.7 0.53680 133.27 378.59 0.7260 1.8770 1.071 0.564 1.230 940 156.0 441.4 8.94 122.6 6.12 21.24 -60.00
-50.00 0.06453 1435.6 0.32385 144.03 383.42 0.7752 1.8480 1.079 0.585 1.232 893 158.3 387.5 9.36
117.8 6.59 19.58 -50.00
-48.00 0.07145 1429.9 0.29453 146.19 384.37 0.7849 1.8428 1.081 0.589 1.233 884 158.7 377.8 9.45 116.9 6.69 19.25 -48.00
-46.00 0.07894 1424.2 0.26837 148.36 385.32 0.7944 1.8376 1.083 0.594 1.234 875 159.1 368.6 9.53 115.9 6.79 18.92 -46.00
-44.00 0.08705 1418.4 0.24498 150.53 386.26 0.8039 1.8327 1.086 0.599 1.235 865 159.5 359.6 9.62 115.0 6.89 18.59 -44.00
-42.00 0.09580 1412.6 0.22402 152.70 387.20 0.8134 1.8278 1.088 0.603 1.236 856 159.9 351.0 9.70 114.0 6.99 18.27
-40.81 0.10132 1409.2 0.21260 154.00 387.75 0.8189 1.8250 1.090 0.606
1.236 851 160.1 346.0 9.75 113.5 7.05 18.08 -40.81
-40.00 0.10523 1406.8 0.20521 154.89 388.13 0.8227 1.8231 1.091 0.608 1.237 847 160.3 342.6 9.79 113.1 7.09 17.94 -40.00
-38.00 0.11538 1401.0 0.18829 157.07 389.06 0.8320 1.8186 1.093 0.613 1.238 838 160.6 334.5 9.87 112.2 7.19 17.62 -38.00
-36.00 0.12628 1395.1 0.17304 159.27 389.97 0.8413 1.8141 1.096 0.619 1.239 828 160.9 326.7 9.96 111.2 7.29 17.30 -36.00
-34.00 0.13797 1389.1 0.15927 161.47 390.89 0.8505 1.8098 1.099 0.624 1.241 819 161.2 319.1 10.04 110.3 7.40 16.98 -34.00
-32.00 0.15050 1383.2 0.14682 163.67 391.79 0.8596 1.8056 1.102 0.629 1.242 810 161.5 311.7 10.12 109.4 7.51 16.66 -32.00
-30.00 0.16389 1377.2 0.13553 165.88 392.69 0.8687 1.8015 1.105 0.635 1.244 800 161.8 304.6 10.21 108.5 7.61 16.34 -30.00
-28.00 0.17819 1371.1 0.12528 168.10 393.58 0.8778 1.7975
1.108 0.641 1.246 791 162.0 297.7 10.29 107.5 7.72 16.02 -28.00
-26.00 0.19344 1365.0 0.11597 170.33 394.47 0.8868 1.7937 1.112 0.646 1.248 782 162.3 291.0 10.38 106.6 7.83 15.70 -26.00
-24.00 0.20968 1358.9 0.10749 172.56 395.34 0.8957 1.7899 1.115 0.653 1.250 772 162.5
284.4 10.46 105.7 7.94 15.39 -24.00
-22.00 0.22696 1352.7 0.09975 174.80 396.21 0.9046 1.7862 1.119 0.659 1.253 763 162.7 278.1 10.55
104.8 8.06 15.07 -22.00
-20.00 0.24531 1346.5 0.09268 177.04 397.06 0.9135 1.7826 1.123 0.665 1.255 754 162.8 271.9 10.63 103.9 8.17 14.76 -20.00
-18.00 0.26479 1340.3 0.08621 179.30 397.91 0.9223 1.7791 1.127 0.672 1.258 744 163.0 265.9 10.72
103.0 8.29 14.45 -18.00
-16.00 0.28543 1334.0 0.08029 181.56 398.75 0.9311 1.7757 1.131 0.678 1.261 735 163.1 260.1 10.80 102.1 8.40 14.14 -16.00
-14.00 0.30728 1327.6 0.07485 183.83 399.57 0.9398 1.7723 1.135 0.685 1.264 726 163.2 254.4 10.89 101.1 8.52 13.83 -14.00
-12.00 0.33038 1321.2 0.06986 186.11 400.39 0.9485 1.7690 1.139 0.692 1.267
716 163.3 248.8 10.98 100.2 8.65 13.52
-10.00 0.35479 1314.7 0.06527 188.40 401.20 0.9572 1.7658 1.144 0.699 1.270 707 163.3 243.4 11.06 99.3 8.77 13.21
-8.00 0.38054 1308.2 0.06103 190.70 401.99 0.9658 1.7627 1.149 0.707 1.274 697 163.4 238.1 11.15 98.4 8.89 12.91
-6.00 0.40769 1301.6 0.05713 193.01 402.77 0.9744 1.7596 1.154 0.715 1.278 688 163.4 233.0 11.24 97.5 9.02 12.60
-4.00 0.43628 1295.0 0.05352 195.33 403.55 0.9830 1.7566 1.159 0.722 1.282 679 163.4
227.9 11.32 96.6 9.15 12.30 -4.00
-2.00 0.46636 1288.3 0.05019 197.66 404.30 0.9915 1.7536 1.164 0.731 1.287 669 163.4 223.0 11.41 95.7 9.28 12.00 -2.00
0.00 0.49799 1281.5 0.04710 200.00 405.05 1.0000 1.7507 1.169 0.739 1.291 660 163.3
218.2 11.50 94.8 9.42 11.70 0.00
2.00 0.53120 1274.7 0.04424 202.35 405.78 1.0085 1.7478 1.175 0.748 1.296 650 163.2 213.5 11.59 93.9 9.56 11.40 2.00
4.00 0.56605 1267.8 0.04159 204.71 406.50 1.0169 1.7450 1.181 0.757
0.757 1.301 641 163.1 208.9 11.68 93.1 9.70 11.10 4.00
6.00 0.60259 1260.8 0.03913 207.09 407.20 1.0254 1.7422 1.187 0.766 1.307 632 163.0 204.4 11.77 92.2 9.84 10.81
8.00 0.64088 1253.8 0.03683 209.47 407.89 1.0338 1.7395 1.193 0.775 1.313 622 162.8 200.0 11.86 91.3 9.99 10.51
10.00 0.68095 1246.7 0.03470 211.87 408.56 1.0422 1.7368 1.199 0.785 1.319 613 162.6 195.7 11.96 90.4 10.14 10.22
12.00 0.72286 1239.5 0.03271 214.28 409.21 1.0505 1.7341 1.206 0.795 1.326 603 162.4 191.5 12.05 89.5 10.29 9.93
14.00 0.76668 1232.2 0.03086 216.70 409.85 1.0589 1.7315 1.213 0.806 1.333 594 162.2 187.3 12.14 88.6 10.45 9.64
16.00 0.81244 1224.9 0.02912 219.14 410.47 1.0672 1.7289 1.220 0.817 1.340 584 161.9 183.2 12.24 87.7 10.61 9.35
18.00 0.86020 1217.4 0.02750 221.59 411.07 1.0755 1.7263 1.228 0.828 1.348 575 161.6 179.2 12.33 86.8 10.77 9.06
20.00 0.91002 1209.9 0.02599 224.06 411.66 1.0838 1.7238 1.236 0.840 1.357 565 161.3 175.3 12.43 85.9 10.95 8.78
22.00 0.96195 1202.3 0.02457 226.54 412.22 1.0921 1.7212 1.244 0.853 1.366 555 161.0 171.5 12.53
24.00 1.01600 1194.6 0.02324 229.04 412.77 1.1004 1.7187 1.252 0.866 1.375 546 160.6 167.7 12.63
26.00 1.07240 1186.7 0.02199 231.55 413.29 1.1086 1.7162 1.261 0.879 1.385 536 160.2 163.9 12.74
28.00 1.13090 1178.8 0.02082 234.08 413.79 1.1169 1.7136 1.271 0.893
1.396 527 159.7 160.3 12.84
30.00 1.19190 1170.7 0.01972 236.62 414.26 1.1252 1.7111 1.281 0.908 1.408 517 159.2 156.7 12.95
32.00 1.25520 1162.6 0.01869 239.19 414.71
1.1334 1.7086 1.291 0.924 1.420 507 158.7 153.1 13.06
34.00 1.32100 1154.3 0.01771 241.77 415.14
1.1417 1.7061 1.302 0.940 1.434 497 158.2 149.6 13.17
36.00 1.38920 1145.8 0.01679 244.38 415.54 1.1499 1.7036 1.314 0.957 1.448
487 157.6 146.1 13.28
38.00 1.46010 1137.3 0.01593 247.00 415.91 1.1582 1.7010 1.326 0.976 1.463 478 157.0 142.7 13.40
40.00 1.53360 1128.5 0.01511 249.65 416.25 1.1665 1.6985 1.339 0.995 1.480 468 156.4 139.4 13.52
42.00 1.60980 1119.6 0.01433 252.32 416.55 1.1747 1.6959 1.353 1.015 1.498 458 155.7 136.1 13.64
44.00 1.68870 1110.6 0.01360 255.01 416.83 1.1830 1.6933 1.368 1.037 1.517 448 155.0 132.8 13.77
46.00 1.77040 1101.4 0.01291 257.73 417.07 1.1913 1.6906 1.384 1.061 1.538 437 154.2 129.5 13.90
48.00 1.85510 1091.9 0.01226 260.47 417.27 1.1997 1.6879 1.401 1.086 1.561 427 153.4 126.3 14.04
50.00 1.94270 1082.3 0.01163 263.25 417.44 1.2080 1.6852 1.419 1.113 1.586 417 152.6 123.1 14.18
52.00 2.03330 1072.4 0.01104 266.05 417.56 1.2164 1.6824
1.439 1.142 1.614 407 151.7 120.0 14.32
54.00 2.12700 1062.3 0.01048 268.89 417.63 1.2248 1.6795 1.461 1.173 1.644 396 150.8 116.9 14.47
56.00 2.22390 1052.0 0.00995 271.76 417.66 1.2333 1.6766 1.485 1.208 1.677 386 149.8 113.8 14.63
58.00 2.32400 1041.3 0.00944 274.66 417.63 1.2418 1.6736 1.511 1.246 1.714 375 148.8 110.7 14.80
60.00 2.42750 1030.4 0.00896 277.61 417.55 1.2504 1.6705 1.539 1.287 1.755 364 147.7 107.6 14.98
65.00 2.70120 1001.4 0.00785 285.18 417.06 1.2722 1.6622 1.626 1.413 1.881 337 144.9 100.0 15.46
70.00 2.99740 969.7 0.00685 293.10 416.09 1.2945 1.6529 1.743 1.584 2.056 309 141.7 92.4 16.02
75.00 3.31770 934.4 0.00595 301.46 414.49 1.3177 1.6424 1.913 1.832 2.315 280 138.1 84.6 16.70
80.00 3.66380 893.7 0.00512 310.44 412.01 1.3423 1.6299 2.181 2.231 2.735 249 134.2 76.6 17.55
$5.00 4.03780 $44.8 0.00434 320.38 408.19 1.3690 1.6142 2.682 2.984 3.532 215 129.7 68.1 18.71
90.00 4.44230 780.1 0.00356 332.09 401.87 1.4001 1.5922 3.981 4.975 5.626 177 124.6 58.3 20.48
95.00 4.88240 662.9 0.00262 349.56 387.28 1.4462 1.5486 17.31 25.29 26.43 128 118.0 44.4 24.76
96.15 4.99000 523.8 0.00191 366.90 366.90 1.4927 1.4927
0 0.0
*Temperatures on ITS-90 scale
6.00
8.00
10.00
12.00
14.00
16.00
18.00
20.00
85.0 11.12 8.50
22.00
24.00
26.00
28.00
30.00
32.00
84.1 11.30 8.22
83.2 11.49 7.94
82.3 11.69 7.66
81.4 11.89 7.38
80.5 12.10 7.11
79.6 12.31 6.84
78.7 12.54 6.57 36.00
77.8 12.77 6.30 38.00
76.9 13.02 6.04 40.00
76.0 13.28 5.77 42.00
75.1 13.55 5.51 44.00
34.00
74.1 13.83 5.25 46.00
73.2 14.13 5.00 48.00
72.3 14.45 4.74 50.00
71.4 14.78 4.49 52.00
70.4 15.14 4.24 54.00
69.5 15.52 4.00 56.00
68.6 15.92 3.75 58.00
67.6 16.36 3.51 60.00
65.3 17.61 2.92 65.00
62.9 19.16 2.36 70.00
1.82 75.00
1.30 $0.00
0.83 $5.00
0.40
60.6 21.16
58.6 23.87
57.4 27.82
59.3 34.55
83.5 59.15
90.00
0.05 95.00
0.00 96.15
"Critical point
00
Normal boiling point
Velocity of
Sound, m/s
Transcribed Image Text:Q3/ In refrigeration system uses R22, the evaporator temperature is -10°C and the
condenser temperature is 50°C. The system is ideal. Determine using the tables:
1. Compressor work (w).
2. Rejected heat from the condenser.
3. Refrigeration effect (RE).
4. Coefficient of Performance (COP).
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