The Heating System with the Steam-jet Heat Pump in Wood Drying Miao ping (Wood Industry College, Nanjing Forestry University Jiangsu Nanjing China 210037)
As the heat energy consume account for 60-70% at total in wood drying process compare with others process in wood product manufacture, energy saving is vary important during wood drying. This paper introduces a steam-jet heating unit using in wood drying kiln of steam heating, which can reduce the energy consuming and reform the quality of wood during wood drying. In the Steam-jet heat pump steam and water is the working substance, so condensing temperature is higher than the refrigerant normally using in heat pump. It suitable to all kinds of species wood drying in different temperature, conclude high temperature drying. It possesses the merit of steam drying kiln and dehumidification drying as the same time avoid the demerit of no steaming and low temperature of dehumidification drying.