16
Table 11 — Fan Performance — 48/50N 75-150 Nominal Ton Units Standard Return Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.20.40.60.81.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000
449 2.09 476 2.54 502 3.02 528 3.52 554 4.04
18,000
528 3.38 551 3.91 574 4.46 596 5.03 618 5.62
21,000
609 5.15 629 5.76 648 6.38 668 7.03 687 7.69
24,000
691 7.49 708 8.17 725 8.87 742 9.59 759 10.32
27,000
773 10.45 789 11.22 804 12.00 819 12.79 834 13.60
30,000
856 14.14 870 14.99 884 15.85 897 16.72 911 17.60
33,000
939 18.64 952 19.56 964 20.49 977 21.44 989 22.40
36,000
1022 24.00 1034 25.01 1045 26.02 1057 27.04 1068 28.09
39,000
1106 30.33 1116 31.41 1127 32.50 1137 33.61 1148 34.73
42,000
1189 37.69 1199 38.86 1209 40.04 1219 41.21 1228 42.42
45,000
1272 46.18 1282 47.42 1291 48.68 1300 49.94 1309 51.22
48,000
1356 55.86 1365 57.19 1373 58.52 1382 59.88 1391 61.23
51,000
1440 66.82 1448 68.24 1456 69.65 1464 71.07 1472 72.51
52,500
1482 72.81 1490 74.26 1497 75.71 1505 77.17 1513 78.65
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.21.41.61.82.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000
579 4.59 604 5.15 629 5.73 653 6.32 677 6.94
18,000
639 6.23 661 6.86 682 7.50 703 8.16 723 8.84
21,000
705 8.36 724 9.06 743 9.77 761 10.50 779 11.24
24,000
776 11.07 792 11.84 809 12.62 825 13.41 842 14.22
27,000
849 14.42 864 15.26 879 16.11 894 16.97 908 17.85
30,000
924 18.49 938 19.40 951 20.33 965 21.26 978 22.21
33,000
1001 23.38 1014 24.36 1026 25.36 1038 26.37 1050 27.39
36,000
1079 29.13 1091 30.20 1102 31.27 1113 32.35 1125 33.44
39,000
1158 35.85 1169 37.00 1179 38.14 1190 39.30 1200 40.47
42,000
1238 43.62 1248 44.84 1258 46.06 1268 47.30 1277 48.54
45,000
1318 52.50 1328 53.79 1337 55.10 1346 56.41 1355 57.73
48,000
1399 62.59 1408 63.96 1416 65.35 1425 66.72 1434 68.13
51,000
1480 73.95 1489 75.40 1497 76.86 1505 78.32 1513 79.80
52,500
1521 80.13 1529 81.63 1537 83.12 1545 84.63 1553 86.14
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.22.42.62.83.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000
700 7.56 723 8.21 746 8.86 768 9.53 791 10.21
18,000
744 9.53 764 10.24 784 10.96 804 11.69 824 12.44
21,000
797 11.99 815 12.77 833 13.55 851 14.35 868 15.16
24,000
858 15.04 874 15.88 890 16.72 906 17.59 921 18.46
27,000
923 18.74 937 19.64 952 20.56 966 21.48 980 22.43
30,000
991 23.17 1005 24.15 1018 25.13 1031 26.13 1044 27.13
33,000
1063 28.41 1075 29.46 1087 30.52 1099 31.58 1111 32.66
36,000
1136 34.55 1147 35.67 1158 36.79 1169 37.93 1180 39.08
39,000
1211 41.65 1221 42.84 1231 44.04 1242 45.24 1252 46.46
42,000
1287 49.80 1297 51.05 1306 52.33 1316 53.61 1325 54.90
45,000
1364 59.05 1373 60.40 1382 61.74 1391 63.09 1400 64.46
48,000
1442 69.53 1451 70.94 1459 72.37 1468 73.80 1476 75.23
51,000
1521 81.28 1529 82.78 1537 84.28 1545 85.78 1553 87.30
52,500
1560 87.66 1568 89.18 1576 90.72 1584 92.27 1592 93.83
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.23.43.63.84.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000
813 10.90 834 11.60 856 12.31 877 13.02 898 13.75
18,000
843 13.19 862 13.96 881 14.74 900 15.53 919 16.34
21,000
886 15.98 903 16.81 920 17.66 937 18.51 954 19.38
24,000
937 19.35 952 20.25 968 21.15 983 22.08 999 23.01
27,000
994 23.38 1009 24.34 1023 25.32 1037 26.30 1050 27.30
30,000
1057 28.15 1070 29.18 1083 30.22 1095 31.27 1108 32.33
33,000
1123 33.74 1135 34.84 1146 35.94 1158 37.06 1170 38.19
36,000
1191 40.23 1202 41.39 1213 42.57 1224 43.76 1235 44.95
39,000
1262 47.68 1273 48.93 1283 50.18 1293 51.42 1303 52.69
42,000
1335 56.21 1344 57.51 1354 58.82 1364 60.16 1373 61.48
45,000
1409 65.83 1418 67.22 1427 68.61 1436 70.02 1445 71.42
48,000
1484 76.69 1493 78.13 1501 79.59 1510 81.07 1518 82.55
51,000
1561 88.80 1569 90.34 1577 91.89 1585 93.43 1593 94.97
52,500
1599 95.40 1607 96.95 1615 98.52 1623 100.12 1630 101.70
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