Useful Formulas
| Compressor RPM = |
motor pulley p.d. X motor RPM _____________________________ |
|
compressor pulley p.d.
|
|
| Motor Pulley p.d. = |
compressor pulley p.d. X compressor RPM ______________________________________ |
|
motor pulley p.d.
|
|
| Compressor Pulley = |
motor pulley p.d. X motor RPM ______________________________ |
|
compressor RPM
|
|
| Motor RPM = |
compressor pulley p.d. X compressor RPM ______________________________________ |
|
motor pulley p.d.
|
|
| Piston Displacement in CFM = |
cylinder bore X cylinder bore X stroke in inches X RPM ______________________________________________ |
|
2200
|
|
| Cubic Feet Compressed Air = |
cu. ft. free air X atmospheric pressure ____________________________________ |
|
(PSIG + 14.7)
|
|
| Cubic Feet Free Air = |
cu. ft. compressed air X (PSIG 14.7) ___________________________________ |
|
Atmospheric pressure
|
|
| Piston speed in feet per minute = |
2 X stroke (in inches) X RPM ______________________________ |
|
12
|
|
| Gallons = cu. ft. X 7.46 | |
| Cubic Feet = gallons X .134 | |
| PSI = bar X 14.5 | |
| BAR = psi X 0.069 | |
| Cubic Feet = cu. meter X 35.31 | |
| Cubic Meter = cu. ft. X 0.028 |