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| Engin. Equivalents |
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Engineering Equivalents |
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| 1,000 sq. ft. EDR = 1,000 sq. ft. EDR = 1,000 sq. ft. EDR = |
240,000 BTU per hr. 247 lbs. Water Evap. per hr. 1/2 gal. Water Evap. per min. |
| 1 sq. ft. EDR = 1 sq. ft. EDR = 1 sq. ft. EDR = |
240 BTU per hr. (Steam) 150 BTU per hr. (Hot Water) 1/4 lb. Water Evap. per hr. |
| 1 Boiler HP = 1 Boiler HP = |
33,475 BTU per hr. 34.5 lbs. Water Evap. per hr. (at 212°F) |
| 1 Boiler HP = 1 Boiler HP = 1 Boiler HP = |
0.07 gal Water Evap. per min. 140 sq. ft. EDR (Steam) 222 sq. ft. EDR (Hot Water) |
| 1 lb. PSI = 1 lb. PSI = 1 lb. PSI = |
2.31 ft. of Water 2.04 ins. of Mercury 0.068 Atmosphere |
| 1 ft. of Water = 1 ft. of Water = 1 ft. of Water = |
0.433 lbs. PSI 0.882 ins. of Mercury 0.029 Atmosphere |
