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R250| LGR Dehumidifier Installation, Operation, and Maintenance Instructions
5.1 TECHNICAL DESCRIPTION
The Phoenix R250 uses a refrigeration system similar to an air conditioner’s to
remove heat and moisture from incoming air and to add heat to the air that is
discharged.
Hot, high pressure refrigerant gas is routed from the compressor to the condenser
coil. The refrigerant is cooled and condensed by giving up its heat to the air
that is about to be discharged from the unit. The refrigerant liquid then passes
through a filter/drier and capillary tubing which cause the refrigerant pressure and
temperature to drop. It next enters the evaporator coil where it absorbs heat from
the incoming air and evaporates.
The evaporator operates in a flooded condition, which means that all the evaporator
tubes contain liquid refrigerant during normal operation. A flooded evaporator
should maintain constant pressure and temperature across the entire coil, from
inlet to outlet.
The mixture of gas and liquid refrigerant enter the accumulator after leaving the
evaporator coil. The accumulator prevents any liquid refrigerant from reaching
the compressor. The compressor evacuates the cool refrigerant gas from the
accumulator and compresses it to a high pressure and temperature to repeat the
process.
Figure 7:
Refrigeration
system
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