Dehumidifier Timber Dryer
A Dehumidifier makes use of the refrigeration system to heat up the drying chamber on the high pressure side and the low pressure side to cool and condense the moisture from the vapor to a liquid state. The use of the highly efficient scroll compressor enable the dehumidifier to achieve a high Coefficient of Performance= COP (the ratio of heat production in KW and the amount of electrical energy (in Kw) use. The old generation dehumidifiers have only a COP of 2.0.
Our new generation Duo Mode Dehumidifier has an energy saving concept.
Instead of using one low-pressure-side heat exchanger for both the heating and the dehumidification process, we use a second set of heat exchanger to allow the outside air to heat up the very cold refrigerant as it expands through the expansion valve, so that the cool air is not returned into the dryer, The first heat exchanger inside the dehumidifier, will only be used for dehumidification cooling. As the returning air from the room enters the first heat exchanger, the hot air will be cooled and water vapor will condense and drip into a drain pan. There will be a temperature drop as the air passes through the first heat exchanger. This dehumidification process is only for a short time, and some heat loss is unavoidable. With this new design, we can heat up the room to a higher temperature to about 65 to 70oC.
The Duo-Mode Dehumidifier is very easy to install. There is an opening at the rear of the dryer wall, just push the Dehumidifier against the wall opening from outside. Align them together and then connect the outlet air duct from the top of the unit into the dryer room. Depending on the width of the dryer, several circulation fans will be needed. There should be a sub-ceiling below the fans for better airflow control. A drain pipe needs to be connected to the condensed water drain pan to release the water to the outside.
The Dehumifier drier is ideal for drying heat sensitive timber At lower drying temperatures, low humidity or EMC can be achieved. Timbers such as Acacia and several Eucalyptus species are such timbers.
Unlike the conventional heat and vent dryers, the room must be heated to a higher temperature in order to achieve low humidity or EMC. This condition may cause the timber to case harden. After which , the moisture will be locked inside the wood. This causes long drying time and further drying will cause drying defects.