Air Compressor kW to CFM Calculator
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Air Compressor kW to CFM Calculator
From reciprocating-air rule-of-thumb shaft power: HP ≈ (CFM × PSIG_gauge) / (229 × η), then CFM from kW with HP = kW / 0.7457.
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What is Air Compressor kW to CFM Calculator?
Converts an air compressor's electrical power input (kilowatts) to its airflow output (Cubic Feet per Minute — CFM). Used to compare compressor efficiency and estimate airflow capacity from motor power ratings.
Air Compressor kW to CFM Calculator Formula / Method
CFM ≈ (kW × 4.5) / Compression Ratio
Air Compressor kW to CFM Calculator Worked Example
Compressor: 7.5 kW, discharge pressure: 100 psi, efficiency: 80%
Compression ratio:
Theoretical CFM:
Actual CFM:
Where Air Compressor kW to CFM Calculator Is Applied
- Selecting compressors for workshop tools
- Energy-efficiency audits in manufacturing
- Comparing compressor models by power/output
- Industrial air system design and capacity planning
- Pneumatic conveying system sizing
- Estimating compressed-air electricity costs
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