The Forestry Forum

 So after having a new KD 150 sitting in my shop for almost a year I finally got it ready to start up. ( screwed my self on the 1 year warranty). If I am spending time to make the buildind weather proof why do I need the vents in the building?    ???

Sometimes the building interior may overheat due to heat from the compressor, fan motors, plus the recovered heat from the heat pump process.  The vents are used to cool the building's environment to a level that the compressor requires or the wood requires.

The motor in the compressor and the fans generate heat.  At some point, the temp will increase at a level that is too high, even with the heater turned off.  The only way to lower the temperature in the chamber back into the safe range is to open the vents.  The amount to open them is something that you learn with experience, but it is a pretty fast learning curve. 

The first few days when I am kiln drying a load that was previously air dried to about 15% I do not need the vents to be open.  Then, the temp will begin to climb as the wood dries and the wood requires less heat to evaporate water as there is less water to evaporate.  The only way then to keep the temp in check is to vent. 

roger, roger