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류경용(Kyung Yong Ryu),강한기(Han Ki Kang) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
To replace the absorption chillers installed in existing buildings, the economic evaluation was performed based on the LNG consumption of the previous year’s usage. Result of the economic evaluation of the Ice Storage System which is energy-saving system, the storage part and using part are separated, is to reduce 66% of the annual maintenance costs and 30% of the energy consumption(TOE) and carbon dioxide emissions. In addition, it is incongruent to use the existing chiller because the renovation site is difficult to make enough space for carrying in the equipment. By using the compact brine chiller made by Mitsubishi in this Ice Storage System, the chiller can be taken in the field by just use the normal elevator instead of the import district for the equipment.
박창현,류경용,백종현,홍희기 경희대학교 자연과학종합연구원 2001 자연과학논문집 Vol.7 No.-
대기온도보다 융점이 낮은 상변화물질들의 잠열을 측정하는 방법에 대한 연구를 하였다. 특히, 현재 연구의 목적은 잘 밀폐된 캡슐 내의 잠열을 측정하는데 있다. 증류수를 시료로 T-history법과 열유속계를 이용하여 잠열을 측정하였다. 비록 잠열의 값이 정확한 값을 나타내지는 않지만, 반복실험동안 잠열의 감소여부를 정의하는데 유용한 방법이다. We studied methods to measure heat of fusion of phase change materials(PCMs) with melting point lower than room temperature. In particular, the purpose of the present study is to obtain latent heat of thermal storage material including several additives in the well-sealed capsule. T-history method and heat-flux meter was used in the experiments where the pure water was selected as specimen. Though those results are not in good agreement with the exact value, the methods can be applied usefully in confirming whether or not the amount of the latent heat reduces through repetitive cycle.