Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is very wet vapour

Before entering the compressor
Before passing through the condenser
After passing through the expansion or throttle valve
After passing through the condenser

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Refrigeration and Air Conditioning
Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since

These react with plants and cause greenhouse effect
These react with water vapour and cause acid rain
These react with ozone layer
These react with oxygen and cause its depletion

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