One gallon of fresh water | = | 8.33 Lbs. |
One cubic foot of water | = | 7.48 Gallons |
One cubic foot of water | = | 62.4 Lbs. |
One U.S. Gallon | = | 231 Cubic inches |
%Efficiency | = | GPH x 8.33 x Temp. Rise
BTU/Hr. Input |
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BTU Input | = | GPH x 8.33 x Temp. Rise
%Efficiency* |
*%Efficiency for gas is 76% (as of January 1, 1994) Electric is 100% |
|
BTU Output | = | GPH x 8.33 Lbs/Gal. x Temp. Rise | ||
kW | = | GPH x 8.33 x Temp. Rise
3413 |
or | GPH x Temp. Rise
410 |
GPH | = | kW x 3413
Temp. Rise x 8.33 |
or | kW x 410
Temp. Rise |
Rise (°F) | = | kW x 3413
GPH x 8.33 |
or | kW x 410
GPH |
1 kW | = | 3413 BTU | = | 4.1 GPH at 100° Temp. Rise |
1 kW | = | 1000 Watts | BTU x 0.293 = Watts | |
1 BTU | = | Amount of heat required to raise the temperature of 1Lb of water 1° |