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  1. Using a quasi-heat-pulse method to determine heat and moisture transfer properties for porous orthotropic wood products or cellular solid materials

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    Author(s): M. A. Dietenberger
    Date: 2006
    Source: Journal of thermal analysis and calorimetry. Vol. 83 (2006): pages 97-106
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (182 KB)

    Description

    Understanding heat and moisture transfer in a wood specimen as used in the K-tester has led to an unconventional numerical solution arid intriguing protocol to deriving the transfer properties. Laplace transform solutions of Luikov’s differential equations are derived for one-dimensional heat and moisture transfer in porous hygroscopic orthotropic materials and for a gradual finite heat pulse applied lo both surfaces of a flat slab. The K- tester 637 (Lasercomp) supplies a quasi-heat-pulse to both sides of a 2-ft-square specimen and records precise signals as function of time from surface thermocouples and heat flux thermopiles. We obtained transfer properties for moist and oven-dried redwood lumber flooring.

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    Citation

    Dietenberger, M. A. 2006. Using a quasi-heat-pulse method to determine heat and moisture transfer properties for porous orthotropic wood products or cellular solid materials. Journal of thermal analysis and calorimetry. Vol. 83 (2006): pages 97-106

    Keywords

    Cellular solid materials, heat/moisture transfer properties, Luikov equations solutions, porous orthotropic wood

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