Moisture diffusion coefficient of <em>Cunninghamia lanceolata</em> board with non-steady state conditions

LI Yan-jun; LI Liang; ZHANG Bi-guang

Volume 24 Issue 2

Feb. 2017

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Article Navigation > Journal of Zhejiang A&F University > 2007 > 24(2): 121-124

LI Yan-jun, LI Liang, ZHANG Bi-guang. Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions[J]. Journal of Zhejiang A&F University, 2007, 24(2): 121-124.

Citation:

LI Yan-jun, LI Liang, ZHANG Bi-guang. Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions[J]. Journal of Zhejiang A&F University, 2007, 24(2): 121-124.

Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions

1.
School of Engineering, Zhejiang Forestry College, Linan 311300, Zhejiang, China;

Funds:

科学技术部攻关项目(03EFN213300104);浙江林学院博士基金项目(2351000585, 2070000018)

Received Date: 2006-08-26
Rev Recd Date: 2006-11-20
Publish Date: 2007-04-20

Abstract

Cunninghamia lanceolata(Chinese fir)boardwas tested systematically in non-steady state conditions to determine the moisture diffusion coefficientwhen the temperature of the drying medium, the initial moisture content(IMC), and the texture direction varied. Results showed that the moisture diffusion coefficient increased with the increase of the drying medium temperature or IMC, reaching a maximum near the fiber saturation point(FSP).When the moisture contentwas below the FSP, the moisture diffusion coefficient increased with the increase of the initial moisture content, but when the moisture content was above the FSP, the coefficient remained stable. The longitudinal diffusion coefficient was signifcantly larger than the radial and tangential diffusion coefficients, with ratios between 5- 7, and the radial diffusion coefficient was clearly larger than the tangential diffusion coefficientwith a ratio of about 1.0- 1.5.[Ch, 3 tab. 11 ref.]
- forestengineering,
- Cunninghamia lanceolata board,
- moisture diffusion coefficient,
- non-steady state,
- wood drying

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions

1. School of Engineering, Zhejiang Forestry College, Linan 311300, Zhejiang, China;

Funds:

科学技术部攻关项目(03EFN213300104);浙江林学院博士基金项目(2351000585, 2070000018)

Received Date: 2006-08-26

Rev Recd Date: 2006-11-20

Publish Date: 2007-04-20

Key words:

Abstract: Cunninghamia lanceolata(Chinese fir)boardwas tested systematically in non-steady state conditions to determine the moisture diffusion coefficientwhen the temperature of the drying medium, the initial moisture content(IMC), and the texture direction varied. Results showed that the moisture diffusion coefficient increased with the increase of the drying medium temperature or IMC, reaching a maximum near the fiber saturation point(FSP).When the moisture contentwas below the FSP, the moisture diffusion coefficient increased with the increase of the initial moisture content, but when the moisture content was above the FSP, the coefficient remained stable. The longitudinal diffusion coefficient was signifcantly larger than the radial and tangential diffusion coefficients, with ratios between 5- 7, and the radial diffusion coefficient was clearly larger than the tangential diffusion coefficientwith a ratio of about 1.0- 1.5.[Ch, 3 tab. 11 ref.]

Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions

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Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions

1. School of Engineering, Zhejiang Forestry College, Linan 311300, Zhejiang, China;

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Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions

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Moisture diffusion coefficient of Cunninghamia lanceolata board with non-steady state conditions

1. School of Engineering, Zhejiang Forestry College, Linan 311300, Zhejiang, China;

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