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http://dx.doi.org/10.4191/kcers.2018.55.2.05

Eco-friendly Self-cooling System of Porous Onggi Ceramic Plate by Evaporation of Absorbed Water  

Katsuki, Hiroaki (Ceramicware Center, Korea Institute of Ceramic Engineering and Technology)
Choi, Eun-Kyong (Ceramicware Center, Korea Institute of Ceramic Engineering and Technology)
Lee, Won-Jun (Ceramicware Center, Korea Institute of Ceramic Engineering and Technology)
Kim, Ung-Soo (Ceramicware Center, Korea Institute of Ceramic Engineering and Technology)
Hwang, Kwang-Taek (Ceramicware Center, Korea Institute of Ceramic Engineering and Technology)
Cho, Woo-Seok (Ceramicware Center, Korea Institute of Ceramic Engineering and Technology)
Publication Information
Journal of the Korean Ceramic Society / v.55, no.2, 2018 , pp. 153-159 More about this Journal
Abstract
Porous ceramic plates were prepared from Onggi clay and bamboo charcoal powder at 1100 and $1200^{\circ}C$ and their porous properties and water absorption, and the cooling effect of porous plates, were investigated to produce eco-friendly porous ceramics for a self-cooling system that relies on the evaporation of absorbed water. Porous properties were dependent on the particle size of charcoal powder pore forming additive and the firing temperature; properties were also found to be dependent on the total pore volume, average pore size and porosity, which had values of $0.103-0.243cm^3/g$, 0.81 - 2.56 mm and 20.9 - 38.2%, respectively, at $1100^{\circ}C$ and $0.04-0.18cm^3/g$, 0.33 - 2.03 mm and 10.8 - 30.9%, respectively, at $1200^{\circ}C$. Cooling temperature difference of flowing air parallel to surface of porous ceramic plates fired with two kinds of charcoal powder at $1100^{\circ}C$ was $3.5-3.6^{\circ}C$ at $26^{\circ}C$ and 60% of relative humidity in a closed box. Cooling temperature difference was dependent on the number of porous plates and the distance between porous plates. A simple and eco-friendly cooling system using porous ceramic plates fired from Onggi clay and charcoal powder was proposed.
Keywords
Raw material; Onggi clay; Porous ceramic plate; Evaporative cooling system; Water absorption;
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Times Cited By KSCI : 1  (Citation Analysis)
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