Specification

1-150.15
12
PERFORMANCE DATA
Steam Conversion Tables
Table 12.1 is used to determine how steam pressures other than 2 lb. affect mounting height.
Table 12.1
Steam Unit Heater Mounting Height Correction Factors jk
Steam Pressure, PSIG
2 5 10 15 20 30 40 50 60 70 80 90 100 125 150 175 200 225 250
Correction Factor 1.00 0.97 0.94 0.92 0.89 0.86 0.84 0.82 0.80 0.79 0.77 0.76 0.76 0.74 0.72 0.71 0.70 0.69 0.68
j Factors are for use with entering air temperatures that range from 50° to 70°F.
k While all units are capable of operation on steam pressures greater than 30 lb., low outlet temperature models are ideally suited for steam pressures above
30 lb. when mounting height is critical.
Applicable formula (examples on page 15):
Max. Mounting Height
A
= Max. Mounting Height
S
x Correction Factor
Where:
Max. Mounting Height
A
= Maximum mounting height at actual conditions
Max. Mounting Height
S
= Maximum mounting height at standard conditions
Table 12.2 is used to determine the rate of condensate production at steam pressures other than 2 lb.
Table 12.2
Properties of Steam
Gauge Latent Gauge Latent Gauge Latent Gauge Latent
Pressure Temp Heat Pressure Temp Heat Pressure Temp Heat Pressure Temp Heat
(PSIG) (°F) (Btu/lb.) (PSIG) (°F) (Btu/lb.) (PSIG) (°F) (Btu/lb.) (PSIG) (°F) (Btu/lb.)
0 212.0 970.3 34 279.4 924.7 70 316.0 897.3 109 343.6 875.4
2 218.5 966.2 36 281.9 922.9 72 317.7 896.0 112 345.4 873.9
4 224.4 962.4 38 284.3 921.1 74 319.3 894.8 115 347.2 872.5
5 227.2 960.6 40 286.7 919.3 76 320.9 893.5 118 348.9 871.0
6 229.8 958.8 42 289.0 917.6 78 322.4 892.3 121 350.7 869.6
8 234.8 955.6 44 291.3 915.9 80 323.9 891.1 124 352.4 868.2
10 239.4 952.5 46 293.5 914.3 82 325.4 889.9 125 352.9 867.8
12 243.7 949.6 48 295.6 912.7 84 326.9 888.8 127 354.0 866.9
14 247.8 946.8 50 297.7 911.2 86 328.4 887.6 130 355.7 865.5
16 251.6 944.2 52 299.7 909.7 88 329.8 886.5 133 357.3 864.1
18 255.3 941.7 54 301.7 908.2 90 331.2 885.4 136 358.9 862.9
20 258.8 939.3 56 303.6 906.7 92 332.5 884.3 139 360.4 861.5
22 262.1 936.9 58 305.5 905.3 94 333.9 883.2 142 362.0 860.3
24 265.3 934.7 60 307.3 903.9 96 335.2 882.1 145 363.5 859.0
26 268.3 932.5 62 309.1 902.5 98 336.6 881.1 150 365.9 856.9
28 271.3 930.5 64 310.9 901.2 100 337.9 880.0 175 377.4 846.8
30 274.1 928.5 66 312.6 899.9 103 339.8 878.5 200 387.9 837.2
32 276.8 926.6 68 314.4 898.6 106 341.7 876.9 225 397.3 828.5
- - - - - - - - - 250 406.1 820.0
Applicable formula (examples on page 15):
Condensate rate = Btu
A
÷ Latent Heat of Steam
Where:
Btu
A
= Capacity at actual operating conditions