Condensate from Compressed Air

The water dropping out after the compressor and aftercooler, the dew point, and the cooler’s latent load.

Unit system

Inputs

Intake flow (at normal conditions)

The compressor’s rated flow. Nm³ is at 0 °C and 1.01325 bar.Intake pressure (absolute)

Intake air temperature

Intake relative humidity

Discharge pressure (absolute)

Aftercooler outlet temperature

Usually 8–12 °C above ambient. The air is taken as SATURATED at this point.Annual operating hours

Condensate formed

7.28kg/h

Water per day (litres)

174.7

Pressure dew point at outlet	35 °C
Dew point at intake	19.15 °C
Intake humidity ratio (kg/kg dry air)	0.01392
Outlet humidity ratio	0.00441
Latent load on the aftercooler	5.057 kW
Water per year (m³)	44

The air is taken as SATURATED at the aftercooler outlet. With a dryer the dew point falls further and condensation continues there.
Air is an ideal gas; the water vapour partial pressure comes from the IAPWS-IF97 saturation curve.

A PDF carrying the inputs, results, assumptions and the source. A one-time code is sent to your address.

Results are for engineering pre-assessment and are not a product selection commitment. Final responsibility rests with the user.