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Paper Information

Journal:   IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH   fall 2016 , Volume 31 , Number 3 (56) ; Page(s) 472 To 485.

Investigation on the performance of solar kiln for wood drying in different seasons in Karaj

Author(s):  TARMIAN A.*, DEHGHAN S.A., Tarighnoor e., Pyramoon m., SHAMSI R., LAYEGHI M.
* Department of Wood and Paper Science & Technology, Faculty of Natural Resources, University of Tehran, Tehran, Iran
In this research, the performance of a semi-greenhouse solar kiln was evaluated for dying different wood species in different season in Karaj. This study was carried out in two separate parts. In the first part, the flat-sawn boards of oak and fir wood with a nominal thickness of 50 mm were dried during summer of the year 2012. In the second part, the flat-sawn boards of beech and poplar wood with the same thickness were dried in autumn, 2014 and spring, 2015. For both parts, the boards were also air-dried. The temperature measured inside the solar kiln was 35 º C greater than that outside during daytime and the kiln temperature ranged from 55 to 75º C during 10 a. m. to 2 p. m. In both parts of research, all wood species dried in the solar kiln faster with better quality compared to those air-dried. The severity of casehardening and surface checking in the boards dried in the solar kiln was lower and more homogenous moisture profile was observed. In addition, the final moisture content was lower for the boards dried in the solar kiln.
Keyword(s): Semi-green house;wood,drying,season
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