Engineering calculator · Updated 17 September 2026
Compressed Air Heat Recovery Calculator — Recoverable kW, MWh & Savings
Estimate useful heat recoverable from compressor package input power using recoverable fraction, operating hours, utilization and heat value.
Inputs
Live results
- Recoverable heat 56 kW
- Annual useful heat 336 MWh
- Annual indicated value 16,800
- Unrecovered package power at entered load 24 kW
Formula
Qrec=P×load×recoverable fraction; E=Qrec×hours.
Worked example
A 100 kW compressor at 80% load and 70% recovery exposes about 56 kW useful heat.
Assumptions and limits
- Recovery fraction must reflect package and heat-exchanger design.
- Useful value exists only when a coincident heat sink can accept the recovered heat.
FAQs
What does this Compressed Air Heat Recovery Calculator calculate?
Estimate useful heat recoverable from compressor package input power using recoverable fraction, operating hours, utilization and heat value.
Is this suitable for final equipment selection?
Use the result for engineering screening and operating diagnostics. Confirm final selections against measured data, OEM curves and applicable codes.
Why are the assumptions explicit?
Plant results depend on reference conditions, pressure basis, efficiencies and measurement locations. Showing assumptions keeps the calculation auditable.