In a vapor compression cycle, the physical condition of a very wet vapor refrigerant is________________?
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Answer: E. before entering the compressor
Explanation
A very wet vapor refrigerant is present just before entering the compressor. Refrigerant exiting the evaporator and expansion valve contains liquid droplets mixed with vapor. Entering the compressor with wet vapor risks mechanical damage from liquid slugging. Vapor compression cycles circulate refrigerant through expansion valves, evaporators, and compressors. Evaporators turn liquid refrigerant into low-pressure vapor by absorbing thermal heat. Compressors are designed to handle dry saturated or slightly superheated vapor safely.
HVAC technicians check superheat settings to ensure compressors never ingest liquid refrigerant. Liquid slugging destroys compressor valves and scrolls in commercial refrigeration units. Proper thermal expansion valve adjustment prevents wet vapor from entering the compressor. After passing through the condenser, the refrigerant is a high-pressure subcooled liquid. Before passing through the condenser, the refrigerant is a high-pressure superheated gas. After the expansion valve, the refrigerant is a cold low-pressure wet liquid-vapor mixture.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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