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지열 현장 시공 사례 및 경제성 분석에 관한 연구 (PP.463-466)
박진관(ChenKwan Park),정홍도(HongDo Jung),신용한(YongHan Shin),정효민(HyoMin Jeong),정한식(HanShik Chung) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
Renewable energy is growing based on low-carbon green energy Government policies. According to this policy, geothermal energy is highly efficient and environmentally friendly energy which is being expanded nowadays. However, construction companies are generated disorderly but their ability has not been verified due to the poor geothermal facility which was reported in the media. In the process of introducing on Busan region's largest geothermal facility, it was confirmed that thermal efficiency of the underground is close to heat exchanger performance. Therefore the study improving the efficiency of underground heat exchange found progressed. The results showed voids between Borehole and Ground Heat Exchanger should not be raised. And then geothermal facilities were installed very successfully through the principle grouting operation. As compared to the energy consumption on the basis of operating results energy usage was less than any other heat sources.
박진관(ChenKwan Park),정홍도(HongDo Jung),신용한(YongHan Shin),정효민(HyoMin Jeong),정한식(HanShik Chung) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.11
According to the KEMCO(Korea Energy Management Corporation) reports that the university facilities account for the majority of wasted energy in the domestic building. The reason that a lot of energy to use in university facilities is the university facilities have to use in a lot of energy because of structural problems. More than all, but, the members of the university lack the awareness of energy conservation. Thus, in this paper we focus a discussion on the cases of wasted energy and the methods of energy conservation.
정홍도(Hongdo Jung),신용한(Younhan Shin),박진관(Chenkwan Park),정효민(Hyomin Jeong),정한식(Hanshik Chung) 대한설비공학회 2012 설비공학 논문집 Vol.24 No.10
Heating pipes burst was occurred in the apartment complex that was applied floor radiant heating system. There were two opinions for the cause of the bursted heating pipes that was the flaw during construction and defects in the product and also there were conflicting among them. Officials analyzed it in order to investigate the cause of the rupture. Tensile test results showed different tensile strength between the lower part of heating pipe and the upper part of heating pipes. The lower tensile strength is maintained while the top was not secured. The reason why rupture heating pipes is that flow velocity isn’t secured and then the air get stagnant. Stagnant air makes hardening. It is caused rupturing. The proper flow rate was confirmed 0.166 m/sec after experiment. It isn’t make stagnant air inside heating pipes.