USCG Exam PracticeRefrigeration cycle and components
In the vapor-compression refrigeration cycle, what is the primary function of the evaporator?
- A. To compress low-pressure vapor to a high pressure
- B. To condense high-pressure vapor back into a liquid
- ✓ To absorb heat from the refrigerated space by boiling low-pressure liquid refrigerantCorrect
- D. To throttle high-pressure liquid to low pressure
Why C is correct
The evaporator is where low-pressure liquid refrigerant boils and absorbs heat (latent heat) from the surrounding space, cooling it. The compressor handles compression, the condenser handles condensation, and the metering device handles throttling.