To recycle silica byproducts and to moderate the heat-island phenomenon, a porous ceramic was prepared by mixing waste silica powder with clay and then firing the resultant mixture. The high water-absorption capacity of the ceramic was used to produce a greening material: a moss-covered porous ceramic. To examine the restraining ability of the temperature increase caused by solar-radiant heat on the moss-covered ceramic, the surface-temperature change of a moss-covered sample during solar-radiant-heat reception and the amount of water evaporated from the sample were measured simultaneously. To quantitatively investigate the influence of the water-evaporation heat on the temperature change of the moss-covered sample, the sample temperature change was simulated by performing a thermal-conductivity analysis and by considering the heat of evaporation using finite-element-methods analysis. The experimental results confirmed that the moss-covered sample that could absorb sufficient water could constrain the temperature increase caused by solar-radiant heat for a longer duration than the ceramic sample. The finite-elementsimulation results indicated that the restraining effect on the temperature increase by the moss-covered sample resulted from heat of water evaporation.
雑誌名
宮崎大學工學部紀要
巻
47
ページ
27 - 35
発行年
2018-07
出版者
宮崎大学工学部
Miyazaki University
Faculty of Engineering, University of Miyazaki
リポジトリのご案内
廃シリカゲルを再利用したセラミック基盤を持つコケ緑化基盤材の開発
本文
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