Formula
gal/day ≈ ṁ_air × (W_in − W_out) where W = 0.622·Pw / (Ptot − Pw)Estimates water removed from compressed air by the aftercooler + dryer. Use to size auto drains, oil-water separators, and discharge piping.
Condensate produced
18.4gal / day
1.84 gal/hr · inlet dewpoint 74°F
Where the water goes
- Aftercooler removes ~60–70% (drains at separator).
- Refrigerated dryer removes most of the rest (drain on dryer).
- Drip legs and filter bowls catch the remainder.
- Oil-lubricated compressors: ALL of this water is contaminated — treat before disposal.