USCG Exam PracticeAir conditioning, ventilation, and compressed air
Which of the following best describes the primary purpose of an intercooler in a multi-stage air compressor?
- A. To remove oil mist from the compressed air before it enters the receiver
- ✓ To remove the heat of compression between stages and condense out moistureCorrect
- C. To regulate discharge pressure to the air receiver
- D. To act as a relief valve if discharge pressure rises dangerously
Why B is correct
NAVEDTRA 14075 §7-1 and NAVEDTRA 14104 §10-3 both state that the intercooler between stages removes the heat of compression, improves efficiency, and condenses out moisture. Oil separation and pressure relief are separate functions performed by other components.