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High Frequency Heating of Wood

SUMMARY The principles of H. F. wood drying are discussed as well as the characteristics which make this process an attractive one from the viewpoint of drying wood with moisture and temperature gradients in the same direction. The various methods of drying wood in a H.F. field are reviewed and laboratory results on various pervious and impervious species are given. Practical industrial applications of this process in various countries are discussed and conclusions regarding the cost factor are summarized. The need for research on South African pines with a full-sized industrial generator is stressed.