Continuous System for the Drying of Lumber with Microwave Energy

A prototype lumber drying system utilizing microwave energy has been developed. Pieces of hemlock and Douglas-fir clear lumber 2″ x 8″ x 10′ have been dried in from 5 to 10 hours with a low level of degrade and an even moisture content profile. The equipment consists of a 25kW microwave generating and waveguide applicator system, located in the center of a 120 foot long reciprocating conveyor. The whole system is maintained at the temperature and humidity required to minimize degrade and maximize energy utilization for the species being dried. In comparison to kiln drying, the method will be most feasible when the wood has a relatively low moisture content, a high anticipated degrade loss in conventional kiln drying, or a high dollar value.

You must be logged in to download any documents. Please login (login accounts are free) or learn how to Become a Member