ハイグロスコピックの領域での気泡コンクリートの吸放湿性状 : その 1 局所平衡, 線形モデルによる解析とその妥当性の検討

概要

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Dynamical behaviour of moisture uptake and heat transfer in foam concrete at hygroscopic range is studied on bases of simultaneous heat and moisturet ransfer equations with assumptions of local moisture equilibrium and immovability of liquid water which were showh by us to be valid in wood fiber material, at the hygroscopic range. Based on these governing simultaneous heat and moisture transfer partial difference equations, moisture uptake and temperature variation in foam concrete plates are analyzed with numerical solutions and compared with the experimental result at the various temperature and humidity boundary conditions. At the lower humidity condition the calculated results based on linear equation indicate good agreement with the experimental results, but at the higher humidity condition the calculated results based on linear equation do not agree with the experimental results. These differences cannot be explained by the non-linearity of the equations based on parameter dependency on moisture content. In the next part of this paper, these differences are discussed with considering the hysteresis effect in moisture content.
1981-04-30