|
ENGINEERING
CONSTANTS
|
|
1728 Cu. In. = 1 Cu. Ft. =
7.48 Gal |
| 1" = 2.54
Cm |
|
3412 Btu = 1 Kwh = 1.34 Hp
Hour |
| 491
Btu/Ft.²= 1 Watt Hour/In.² = Heat Density |
|
1 Btu/Lb.°F = 1
Gram-Cal./Gram °C = Specific Heat
|
| 231 Cu.
In. = 1 Gal |
|
1 BTU = 252 Calories =
.293 Watt-Hours |
| 1 BTU/Lb.
= 1.8 Calories/Gram |
|
1 HP = 745.2 Watts |
| 1 Gal.
Water = 8.3 Lbs. |
|
1 Gal. = 231 Cu. In. =
3.785 Liters = 1.227 Cu. Ft |
| 1 Cu. Ft.
= 1728 Cu. In. = .03704 Cu. Yd. = 7.481 Gal. |
|
3 Phase Amps = Total
Watts/Volts x 1.73 |
|
Wattage varies
directly as ratio of voltages squared:
W²
= W¹ X (E²/E¹)²
|
