11
Table 6 — Fan Performance — 48/50N 105 Nominal Ton Units High-Static Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 441 4.97 466 5.77 491 6.61 516 7.49 540 8.41
25,000 497 6.95 519 7.83 541 8.75 563 9.69 584 10.67
27,000 534 8.54 555 9.47 576 10.43 596 11.42 616 12.44
29,000 572 10.35 592 11.33 611 12.34 630 13.38 649 14.44
31,000 610 12.41 629 13.44 647 14.50 664 15.58 682 16.69
33,000 649 14.72 666 15.80 683 16.91 699 18.03 716 19.18
35,000 687 17.30 703 18.43 719 19.58 735 20.75 751 21.95
37,000 726 20.16 741 21.34 756 22.53 771 23.75 786 25.00
39,000 764 23.31 779 24.54 793 25.79 807 27.06 822 28.34
41,000 803 26.78 817 28.05 831 29.35 844 30.65 858 31.99
42,000 842 30.56 855 31.89 868 33.22 881 34.59 894 35.96
44,000 881 34.68 893 36.06 906 37.44 918 38.84 930 40.26
46,000 920 39.14 932 40.56 944 41.99 956 43.45 967 44.91
48,000 959 43.97 970 45.43 982 46.91 993 48.41 1004 49.92
52,500 1047 56.20 1057 57.78 1068 59.35 1078 60.95 1088 62.57
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 563 9.35 587 10.33 609 11.34 632 12.38 654 13.44
25,000 606 11.67 627 12.71 647 13.77 667 14.86 688 15.97
27,000 636 13.49 655 14.56 675 15.66 694 16.78 713 17.93
29,000 667 15.53 685 16.64 704 17.78 722 18.94 739 20.12
31,000 699 17.81 717 18.97 734 20.15 751 21.34 768 22.57
33,000 732 20.35 749 21.55 765 22.77 781 24.01 797 25.27
35,000 766 23.16 782 24.41 797 25.66 812 26.94 827 28.24
37,000 801 26.25 815 27.54 830 28.84 844 30.16 859 31.49
39,000 836 29.65 850 30.97 863 32.31 877 33.67 891 35.05
41,000 871 33.34 884 34.71 897 36.09 911 37.49 924 38.91
42,000 907 37.35 919 38.76 932 40.19 945 41.64 957 43.09
44,000 943 41.70 955 43.15 967 44.62 979 46.11 991 47.61
46,000 979 46.40 991 47.89 1002 49.41 1014 50.92 1025 52.48
48,000 1016 51.44 1027 52.99 1038 54.54 1049 56.12 1060 57.69
52,500 1099 64.19 1109 65.82 1119 67.48 1129 69.14 1140 70.82
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 676 14.53 697 15.65 719 16.79 739 17.96 760 19.16
25,000 707 17.11 727 18.27 746 19.46 765 20.67 784 21.90
27,000 731 19.11 750 20.30 768 21.52 786 22.76 804 24.02
29,000 757 21.34 774 22.56 792 23.82 809 25.09 826 26.38
31,000 784 23.81 801 25.07 817 26.36 833 27.66 849 29.00
33,000 813 26.55 828 27.85 844 29.17 859 30.51 875 31.87
35,000 842 29.56 857 30.90 872 32.26 887 33.63 901 35.02
37,000 873 32.85 887 34.22 901 35.62 915 37.03 929 38.46
39,000 905 36.44 918 37.86 932 39.28 945 40.73 958 42.21
41,000 937 40.34 950 41.80 963 43.27 975 44.75 988 46.26
42,000 970 44.57 982 46.06 994 47.56 1007 49.09 1019 50.63
44,000 1003 49.13 1015 50.66 1027 52.20 1039 53.76 1050 55.34
46,000 1037 54.03 1048 55.60 1060 57.19 1071 58.78 1082 60.40
48,000 1071 59.29 1082 60.91 1093 62.54 1104 64.17 1115 65.83
52,500 1150 72.51 1160 74.21 1170 75.93 1180 77.66 1190 79.39
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 780 20.37 801 21.61 820 22.87 840 24.14 859 25.45
25,000 803 23.16 822 24.44 840 25.73 858 27.05 876 28.38
27,000 822 25.30 839 26.61 857 27.94 874 29.28 891 30.64
29,000 843 27.69 859 29.02 876 30.38 892 31.75 908 33.14
31,000 865 30.33 881 31.70 897 33.08 913 34.48 928 35.90
33,000 890 33.25 905 34.64 920 36.06 935 37.49 950 38.93
35,000 916 36.43 930 37.86 945 39.31 959 40.77 973 42.25
37,000 943 39.90 957 41.37 971 42.85 984 44.34 998 45.85
39,000 972 43.68 985 45.18 998 46.69 1011 48.20 1024 49.76
41,000 1001 47.76 1014 49.30 1026 50.84 1039 52.41 1051 53.99
42,000 1031 52.18 1043 53.76 1055 55.33 1067 56.93 1079 58.54
44,000 1062 56.93 1074 58.53 1085 60.15 1097 61.79 1108 63.44
46,000 1094 62.03 1105 63.67 1116 65.33 1127 67.00 1138 68.68
48,000 1126 67.49 1137 69.17 1147 70.87 1158 72.57 1169 74.29
52,500 1200 81.15 1210 82.92 1220 84.69 1230 86.47 1240 88.28
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