1.
GENERAL DESCRIPTION
The dehumidifier is based around a closed refrigeration system comprising evaporator coil,
condenser coil, expansion valve and compressor. It uses heat pipes to increase the cooling
efficiency, allowing more moisture to be extracted, compared to conventional dehumidifiers. A fan is
used to draw air in through a filter and across the evaporator and discharge it through the condenser.
Moisture is removed from the entering humid air at the evaporator coil and it is collected in a drain
pan mounted below the coil. The collected condensate is then removed by an integral condensate
pump.
Figures 1. to 4. Show the general layout of the dehumidifiers externally and internally.
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Figure 1. General layout of MD units with front grille removed
Figure 2. General layout of MD units
QA/IOM/46 Issue 11 - MD Dehumidifier