http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유동화제가 코팅된 지중열교환기용 벤토나이트의 열적 물리적 특성에 대한 실험적 연구
이진규(Jin Kyu Lee),공현진(Hyoung Jin Kong),임효재(Hyo Jae Lim),신동현(Dong Hyon Shin),박정재(Jung Jea Park) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.11
Bentonite is used as grouting material for ground heat exchanger in geothermal heat pump system. It has to contain properties of high heat transfer, adequate expansion rate and good water proof. The purpose of this study is examine the thermal and physcal properties of bentonite which has coated by superplasticizer. Thus, we compared the characteristics of coated and uncoated bentonite with mass ratio from 10% to 40%. As a result, when the mass ratio increased the thermal conductivity also increased but increment was nearly small. The viscosity of coated bentonite was more higher than uncoated bentonite between 10% to 20% because of superplasticizer. However, in 30% to 40% range, the uncoated bentonite was more higher than coated bentonite. From this study, we could know that the superplasticizer coated bentonite has the similar properties as uncoated bentonite except the viscosity.