Engineering · Auxiliary — Air Compressors
On a multi-stage air compressor, an intercooler is fitted to:
- ALubricate the pistons
- BCool the air between stages, reducing work and removing moisture✓ Correct
- CIncrease the discharge temperature
- DFilter incoming air
Explanation
Cooling the air between compression stages reduces its volume and the work required by the next stage, improves efficiency, and condenses moisture/oil that is then drained, protecting the air bottles.
Authority: Auxiliary Machinery (USCG engineering topic)
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