Screw Air Compressor Repair Kits

A: A screw compressor works by drawing air into the space between two meshing, helical rotors – one male and one female – that rotate in opposite directions. As the rotors turn, they trap the air in increasingly smaller chambers, which compresses it through a positive displacement action.

A: The formula for screw compressor efficiency is a comparison of its useful output (compressed air) to the input power required, often expressed as either Isentropic Efficiency or Volumetric Efficiency.

A: To check compressor efficiency, you need to measure input power and output compressed air volume (flow rate) over a period, then divide the power consumption (in kWh) by the volume (in m³) to get specific power (kWh/m³).

A: Rotary-screw compressors are commonly available in the 5 through 500 HP range and can produce air flows in excess of 2500 SCFM. While the pressure produced by a single-stage screw compressor is limited to 250 PSIG, a two-stage screw compressor can deliver pressures of up to 600 PSIG.