Retrotec USACE - Manual (Page 211)

Appendix D D81
D.4.3.5 Heated Air Greater Than 66 °C (150 °F) Exhausted
Outdoors (Waste)
Figure D132. Air-cooled
compressors with cooling coil on
mezzanine and duct outlet for
winter time heating.
Compressing air generates heat. Greater than 80% of the electrical energy
supplied to an air compressor becomes available as heat in the hot compressed
air being discharged (Figure D132). Some air compressors are air-cooled, with
the heated air discharged to the outdoor environment. This heat can be re-
directed indoors during the heating season to save energy. This heat can also
be recovered to raise the temperature of water in hot water systems used in
processes or for domestic purposes.
D.4.3.6 Fouled Air/Oil Separators (Waste)
Figure D133. Air/oil separator.
Separators are devices that remove the liquid moisture or lubricant from
the air stream (Figure D133). They are found after any intercooler or af-
tercooler to remove condensed moisture. A separator is also located after a