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basic hvac question (refrigeration cycle)?
exactly what state is refrigerant in when it leaves the compressor? it comes in a super heated vapor, get's compressed, absorbs heat from the compressor, and leaves a hot gas until it condenses in the condenser and liquifies under pressure, right? OR, does some of it liquify in the compressor? does all of the condensation of the refrigerant occur in the condenser coil? i know by the time it leaves the condenser it's a sub cooled liquid, but does any of it liquify before then? (there are no stupid questions.) thank you. jim
oh, that's right! if it liquified in the compressor it would slug the outlet valve of the compressor. SO, it has to leave a compressed hot gas. i remember now!
3 Answers
- uncledjm14Lv 59 years agoFavorite Answer
Yup, it leaves the compressor as a hot gas. It condenses continually through the condenser, until the last few rows when it should be completely liquid. The last bit of cooling through the condenser results in the subcooling.
Depending on the cleanliness of the coil the outside temperature and the type of metering decice, it's normal for the amount of subcooling to change, potentially to 0, at which point a fully charged system will still show bubbles in the sight glass. (if it has one)
Source(s): 24+ yrs HVAC Tech
