Moisture transport in birch lumber at low radio-frequency and contact vacuum drying

V. V. Lopatin, M. A. Goreshnev, F. G. Sekisov

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Results of the dynamic distribution of moisture content, temperature, and internal overpressure at low radio-frequency (LRF), up to 100 kHz, and vacuum contact drying are presented. To minimize structural changes of lumber, low temperature drying (less than 70 °C) was used. Contact vacuum drying with LRF volume heating decreases the moisture gradient compared to conductive vacuum drying and increases moisture removal rate by 25 %. The heat consumption energy and electrical energy for drying were determined. The significant influence of the internal overpressure on the moisture transport in birch lumber was proven.

Original languageEnglish
Pages (from-to)779-784
Number of pages6
JournalEuropean Journal of Wood and Wood Products
Issue number6
Publication statusPublished - 2014


ASJC Scopus subject areas

  • Forestry
  • Materials Science(all)

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