6
1
o
C) range. In a 50
o
F/5
o
C PDP, the refrigerant temperature is lowered to the 40
o
F/5
o
C range. This cold
liquid refrigerant flows into the air-refrigerant heat exchanger where it cools the compressed air, and
evaporates into a cold vapor. Vaporized refrigerant flows to the accumulator (R235 or ADR120 and
larger). The gaseous refrigerant then flows to the compressor suction via the suction line filter (R800 or
ADR400 and larger). The function of the accumulator is to hold liquid refrigerant and pass on the
gaseous refrigerant. The liquid and suction line filters functions are to protect the refrigerant system
from foreign particles.
To provide relatively constant temperature in the air-refrigerant heat exchanger (R75 or ADR40 and
larger), the refrigeration system is also equipped with a hot gas bypass valve. Theses mix hot and cold
refrigerant to give a stable suction pressure and temperature. Thus, near constant dew point is
maintained at fluctuating load conditions.
Mr. Goodaire and Mr. Goodaire Plus Systems:
The coalescer is installed after the moisture
separator and before the air-air heat exchanger. The use of a coalescer at the coldest point helps it
remove significantly more aerosols and condensed vapors because the cooling process condenses vapors
into aerosols and liquids. It also coalesces smaller aerosols, which are then removed by the coalescer.
Summary of Contents for ADR Series
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