SPECIFICATION SHEET • SI METRIC
CAT: ELECTRICAL-ENERGY
Compressed-Air Compressor Power
Estimate compressor input power from free-air delivery, absolute pressure ratio, and compression efficiency.
OPERATING LIMITS — Isothermal reference-power calculation only; verify compressor maps, polytropic efficiency, inlet conditions, aftercooler losses, pressure setpoints, controls, and motor service factor.
INPUT DESIGN PARAMETERS (SI)
m³/min
bar
bar
%
CALCULATED SPECIFICATION OUTPUT
Estimated Compressor Input Power
⚡96.99 kW
| Absolute Pressure Ratio | 7.91 ratio |
| Specific Compressor Power | 4.8496 kW per m³/min |
Related planning checklists
This calculator appears in the following engineering planning checklists:
Compressed-Air Energy Audit
Energy Auditor1. Compressed-Air Demand Sizing2. Compressed-Air Compressor Power3. Motor Current Estimation4. Plant Energy Consumption & Cost5. Industrial CO2 Carbon Emissions
Technical Methodology & Engineering Principles
GOVERNING EQUATION
Isothermal reference power = p₁ × Q₁ × ln(p₂/p₁); compressor input power = reference power / efficiency.
Assumptions & Scope
First-pass isothermal reference using free-air delivery at inlet conditions. Final compressor selection must use manufacturer curves, polytropic/adiabatic efficiency, aftercooler pressure drop, ambient conditions, controls, and motor service factor.
Operating Range & Boundary
Use finite, physically meaningful inputs within the stated operating assumptions.