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http://dx.doi.org/10.9719/EEG.2017.50.2.159

Thermal Conductivity Effect of Heat Storage Layer using Porous Feldspar Powder  

Kim, Sung-Wook (Geo-information Institute, GI Co. Ltd.)
Go, Daehong (Geo-information Institute, GI Co. Ltd.)
Choi, Eun-Kyeong (Geo-information Institute, GI Co. Ltd.)
Kim, Sung-Hwan (MS EnC Co. Ltd.)
Kim, Tae-Hyoung (Department of Civil Engineering, Korea Maritime and Ocean University)
Lee, Kyu-Hwan (Department of Disaster Safety & Firefighting, Konyang University)
Cho, Jinwoo (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Economic and Environmental Geology / v.50, no.2, 2017 , pp. 159-170 More about this Journal
Abstract
The temporal and spatial temperature distribution of the heat storage mortar made of porous feldspar was measured and the thermal properties and electricity consumption were analyzed. For the experiment, two real size chambers (control model and test model) with hot water pipes were constructed. Two large scale models with hot water pipes were constructed. The surface temperature change of the heat storage layer was remotely monitored during the heating and cooling process using infrared thermal imaging camera and temperature sensor. The temperature increased from $20^{\circ}C$ to $30^{\circ}C$ under the heating condition. The temperature of the heat storage layer of the test model was $2.0-3.5^{\circ}C$ higher than the control model and the time to reach the target temperature was shortened. As the distance from the hot water pipe increased, the temperature gap increased from $4.0^{\circ}C$ to $4.8^{\circ}C$. The power consumed until the surface temperature of the heat storage layer reached $30^{\circ}C$ was 2.2 times that of the control model. From the heating experiment, the stepwise temperature and electricity consumption were calculated, and the electricity consumption of the heat storage layer of the test model was reduced by 66%. In the cooling experiment, the surface temperature of the heat storage layer of the test model was maintained $2^{\circ}C$ higher than that of the control model. The heat storage effect of the porous feldspar mortar was confirmed by the temperature experiment. With considering that the time to reheat the heat storage layer is extended, the energy efficiency will be increased.
Keywords
porous feldspar; mortar; heat storage; electricity consumption;
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