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论文类型：期刊论文

发表时间：2015-06-30

发表刊物：Gongneng Cailiao/Journal of Functional Materials

收录刊物：EI、PKU、ISTIC、Scopus

卷号：46

页面范围：146-151

ISSN号：10019731

摘要：Based on representative macroscopic volume, this study established   three boxes   model of CaSiO<inf>3</inf> porous media, namely: black box model, gray box model and white box model. Deriving mathematical models to calculate thermal conductivity under the   three boxes   heat physical models. At the same time, the thermal conductivity which overheating H<inf>2</inf>O(g) in the state of 101. 325 kPa and 400 K transfers CaSiO<inf>3</inf> representative macroscopic volume was calculated. What's more, the temperature distribution of CaSiO<inf>3</inf> gray box heat transfer model was simulated when the porosity was 30% and 70%. The finding of this paper indicates that thermal conductivity decreases with increasing porosity, thermal conductivity increases with increasing pore channels distribution coefficient and tortuosity. The research results have important theory value and engineering application value for CaSiO<inf>3</inf> porous media and other inorganic materials porous media in heat and mass transferring. ?, 2015, Journal of Functional Materials. All right reserved.