Ventilating Veneer Dryers

This study deals with the flow of air into veneer dryers. Conclusions indicate it is generally desirable to minimize the flow of air into a veneer dryer. Reduced inflow of air results in lower requirements for heat, attainment of higher temperatures with consequent increase in drying capacity, and reduced likelihood of fires in the dryer. Measurements are made in this study to determine air flow, relative humidity, and gas flow. The conclusion is drawn that excess air in a dryer can increase costs sharply. It was further concluded that intake of air into a veneer dryer is not necessary for drying, since at 300?F, equilibrium moisture content of wood is about 1 percent, even when the drying medium is entirely water vapor.

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