Radio-frequency dielectric drying of short lengths of northern red oak
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Radio-frequency dielectric drying of short lengths of northern red oak

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Published by U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory in [Madison, Wis.] .
Written in English

Subjects:

  • Drying apparatus,
  • Hardwoods -- United States -- Drying,
  • Red oak -- Drying

Book details:

Edition Notes

Statementby William T. Simpson
SeriesResearch paper FPL -- 377
ContributionsForest Products Laboratory (U.S.)
The Physical Object
Pagination8 p. :
ID Numbers
Open LibraryOL14841271M

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Get this from a library! Radio-frequency dielectric drying of short lengths of northern red oak. [William Turner Simpson; Forest Products Laboratory (U.S.),] -- Northern red oak boards, 1 inch thick by 4 inches wide by 24 inches long, were dried from an initial moisture content of approximately 80 percent of various final moisture contents by radiofrequency. Radio-frequency dielectric drying of short lengths of northern red oak William Turner Simpson William Turner Simpson Not In Library. Oak-cottonwood plywood Ronald W. Jokerst Not In Library. The air seasoning and kiln drying of wood Hiram Leroy Henderson Not In Library. Drying fruits & vegetables Accessible book, Lumber, Food. Energy, Mines and Resources Canada., 1 book Friedrich Kneule, 1 book Svetlana Mikhaĭlovna Reprint͡seva, 1 book Cronshaw, Harry Brenan, 1 book Franz Kroner, 1 book Aelwyn Williams-Gardner, 1 book Ministry of Public Building and Works, 1 book Institute of Gas Technology., 1 book Nelson, J. H., 1 book Aurelian Dăscălescu, 1 book Gordon. Radio-frequency dielectric drying of short lengths of northern red oak Simpson, William T. Research Papers. Relationship between longitudinal stress wave transit time and moisture content of lumber during kiln-drying Simpson, William T.; Wang, Xiping. Journal Articles.

Radio Frequency drying can offer benefits over conventional drying, including faster line speeds, consistent moisture levels, lower drying temperatures, smaller equipment. PSC Radio Frequency dryers can result in drying times reduced from 24 hours to 90 minutes and . alternating electric field in the radio frequency spectrum, a natural application for dielectric drying. Moreover, levelling out of uneven moisture content distribution in the lumber has also been credited to the RF/V drying method (1,7). The fundamental principle of RF heating (1 to MHz), is to physically. Radio-frequency (RF) dielectric heating or microwave dielectric heating, induces molecular friction in mater molecules to produce heat, is determined in part by the moisture content of food [4, 5, 10, 12]. The basic arrangement for a dielectric heating system is that Author: Babu Sena Paul, Dan V Nicolae. The dielectric or radio frequency heating equipment available today for wood gluing purposes is a highly engineered apparatus that contains all possible safeguards to make the operation a safe and easy one. The actual operation of the equipment is usually very simple and the operator has a minimum of instruments to watch during the curing cycle.

Radio frequency (RF) heating is a promising technology for food applications because of the associated rapid and uniform heat distribution, large penetration depth and lower energy consumption. A small fraction () of water molecules is always dissociated into H+ and ions lead to a residual conductivity of 4 x S/m even for very clean water. Therefore water is inadequate. The electric susceptibility χ e of a dielectric materials is a measure of how easily it polarizes in response to an electric field. This, in turn, determines the electric permittivity of the material and thus influences many other phenomena in that medium, from the capacitance of capacitors to the speed of light.. It is defined as the constant of proportionality (which may be a tensor. 1. Drying speed that is up to 10 times faster than conventional lumber kilns. 2. Superior quality: effective temperature control and hydraulic shaping prevents cracking and deformation. 3. Suitable for short drying times, while still being flexible. 4. The high radio frequency kills insects and bacteria in the wood. 5.