# brake horsepower formula compressor

The power efficiency of a compressor is the ratio of the air delivered by the compressor and its input electrical requirements. This is the three-phase formula for determining motor horsepower including the addition of the 1.73 in its proper place.
The brake horsepower can be determined from the following equation: (7.53) BHP = 0.0857 Z AVG 1 k Z 1 k − 1 k Q g T 1 η m η a kn p k − 1 P 2 P 1 k − 1 kn p − 1. where: BHP = brake horsepower per stage. A power factor less than one indicates that the two are not perfectly in phase, so the actual power the motor is working at is not what it could be if the voltage and amperage were perfectly in phase. View Newsletter Archives », © 2009-2020 Lewis Systems and Service Company. To increase the rpm and cfm of the blower, the motor pulley size must be increased.

Have you been wondering why some people are so successful, seem to have everything in life? The higher power factor is always more desirable. When using the percent efficiency in a math formula, it must be used as a decimal fraction. Success Compressor [Piston & Screw types] Workshop. If a motor such as a compressor motor does not state the motor horsepower, then this formula will also work to determine the rated or actual operating horsepower. GHP = W x H p / (33000 x Eff p) Power requirement. These motor formulas and related information are also basic to understanding energy consumption, power consumption by motor-driven devices, and the motor side of performing energy audits. Compressed Air and Vacuum - Sales & Service, Greensboro • Lynchburg • Rocky Mount • Charlotte | Servicing VA, NC and SC.
Unlike pure resistive circuits like electric heaters and incandescent lights, motors operate with strong magnetic fields present. Single-phase hp = E x I x Percent Efficiency x PF/746. Special price on parts [Original & Replacement], " A ship in port is safe; but that's not what ships are built for ", Pre-Owned Screw Compressors' Parts -- Heat Exchangers.

Percent Efficiency Compressor Coolant for Rotary Screw Air Compressors. HP = TQ x RPM ÷ 5,252 HP = (435.8 x 4,000) ÷ 5,252 = 331.91 P2 = Desired pressure.

Centrifugal Compressor Power Calculation using Polytropic head. Nothing is 100 percent efficient and motors are no exception. Air conditioning systems often use motors with a SF rating of 1.15. A common service factor on motors is a SF of 1.15. Some motors such as air conditioning and refrigeration compressor motors do not state their motor horsepower. The power factor listed on a motor is very useful to the technician when making motor horsepower and current calculations.

Visit our updated, This website requires certain cookies to work and uses other cookies to help you have the best experience. The gas power is directly proportional to head and mass flow and inversely proportional to efficiency. The calculation shows the motor to be operating slightly more than one horsepower under the 5 hp rating.