Journal of the Korean Wood Science and Technology
- 제26권4호
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- Pages.34-42
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- 1998
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- 1017-0715(pISSN)
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- 2233-7180(eISSN)
침·활엽수재의 Microwave 건조곡선예측
Prediction of Microwave Drying Curves for Various Hardwoods and Softwoods
- 강호양 (충남대학교 농과대학)
- Kang, Ho-Yang (College of Agriculture, Chung-Nam National University)
- 투고 : 1998.08.17
- 발행 : 1998.12.30
초록
Three hardwood (ash, alder and black locust) and three softwood (Japanese red pine, radiata pine and Western hemlock) specimens were dried in microwave(MlW) oven and their drying rates were obtained. Their specific permeabilities were also measured by using a modified liquid permeability measuring device. The correlation between the M/W drying rates and permeabilities of six species were statistically analyzed. It was revealed that within a species there is a logarithmic relationship between the M/W drying rates and average moisture contents and that among species there is a linear relationship between the M/W maximum drying rates and the average specific permeabilities. A exception was Western hemlock, which was of low permeability and of high drying rate. A Me-time equation, which showed a good agreement with the actual data, was derived. Thus using this equation the moisture contents of wood and the drying end points of M/W drying could be predicted. Infrared images of the thermal distribution in wood were illustrated.
키워드