Steam Loss Chart

To establish the approximate dollar loss, take the lb./hr. figure X 24 hours (for a year X 8760) and multiply by your cost of steam. Ex: 1/8″ orifice @ 50 psi = 29.8 X 8760 = 261,048. At a cost of $5.00/1000 lb.: 261,048 X .005 = $1305.24.

 

Orifice Diameter 2 psi 5 psi 10 psi 15 psi 25 psi 50 psi 75 psi
Steam Loss, lb / hr
1/32″ 0.31 0.49 0.70 0.85 1.14 1.86 2.58
1/16″ 1.25 1.97 2.80 3.40 4.60 7.40 10.3
3/32″ 2.81 4.44 6.30 7.70 10.3 16.7 15.4
1/8″ 4.50 7.90 11.2 13.7 18.3 29.8 41.3
5/32″ 7.80 12.3 17.4 21.3 28.5 46.5 64.5
3/16″ 11.2 17.7 25.1 30.7 41.1 67.0 93.0
7/32″ 15.3 24.2 34.2 41.9 55.9 91.2 126
1/4″ 20.0 31.6 44.6 54.7 73.1 119 165
9/32″ 25.2 39.9 56.5 69.2 92.5 151 209
5/16″ 31.2 49.3 69.7 85.4 114 186 258
11/32″ 37.7 59.6 84.4 103 138 225 312
3/8″ 44.9 71.0 100 123 164 268 371
13/32″ 52.7 83.3 118 144 193 314 436
7/16″ 61.1 96.6 137 167 224 365 506
15/32″ 70.2 111 157 192 257 419 580
1/2″ 79.8 126 179 219 292 476 660

 

Orifice Diameter 100 psi 125 psi 150 psi 200 psi 250 psi 300 psi
Steam Loss, lb / hr
1/32″ 3.30 4.02 4.74 6.17 7.61 4.05
1/16″ 13.2 16.1 18.9 24.7 30.4 36.2
3/32″ 29.7 36.2 42.6 55.6 68.5 81.5
1/8″ 52.8 64.3 75.8 99.0 122 145
5/32″ 82.5 100 118 154 190 226
3/16″ 119 145 170 222 274 326
7/32″ 162 197 232 303 373 443
1/4″ 211 257 303 395 487 579
9/32″ 267 325 384 500 617 733
5/16″ 330 402 474 617 761 905
11/32″ 399 486 573 747 921 1095
3/8″ 475 578 682 889 1096 1303
13/32″ 557 679 800 1043 1286 1529
7/16″ 674 787 928 1210 1492 1774
15/32″ 742 904 1065 1389 1713 2037
1/2″ 844 1028 1212 1580 1949 2317

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