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밀폐형 냉각탑용 열교환기의 성능에 영향을 미치는 인자에 관한연구
이상식(Sang-Sik Lee),유성연(Seong-Yeon Yoo),김진혁(Jin-Hyuck Kim),유해성(Hae-Sung Ryu),박형준(Hyoung Joon Park) 대한설비공학회 2008 대한설비공학회 학술발표대회논문집 Vol.2008 No.2
Most high-rise building and large building require a cooling tower. Closed cooling tower is a low noise and the high efficiency. also Closed cooling tower is available for four season. Performance of Closed cooling tower is judged by heat transfer coefficient. In this study, Heat transfer coefficient is compared with air velocity, spray flow, heat exchanger type.
유성연(Seong-Yeon Yoo),김주상(Joo-Sang Kim),김진혁(Jin-Hyuck Kim),유해성(Hae-Sung Ryu),박형준(Hyoung-Joon Park),김서현(Seo-Hyun Kim) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
In closed wet cooling towers, the heat transfer between the air and tube surface is very complicated and composed of the sensible heat transfer and latent heat transfer(mass transfer). The heat and mass transfer are affected by the conditions of air and spray water. The correlation equation was derived to calculate the mass transfer coefficient based on the analogy between the heat and mass transfer. And Design methodology of heat exchanger for closed wet cooling tower is proposed using this correlation.
폴리머 태양열 집열기를 이용한 솔라 싱크 지열원 시스템
김봉규(Bong-Gyu Kim),박형준(Hyoung Joon Park),유해성(Hae Sung Ryu) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.6
The solar sync geothermal system is to synchronized the polymer solar collectors and a geothermal system. The polymer solar collector be able to collecting and radiating. At cooling operation of this system, high calorie in underground will be able to recover by polymer solar collector radiating. also, at heating operation of this system, low calorie in underground will be able to saving heat by polymer solar collector. Through this process, ground heat exchangers compared to the existing underground heat exchanger can be optimized.
유성연(Seong-Yeon Yoo),김진혁(Jin-Hyuck Kim),한규현(Kyu-Hyun Han),김주상(Joo-Sang Kim),유해성(Hae-Sung Ryu),박형준(Hyoung Joon Park) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The use of cooling towers in the air conditioning systems of buildings is increasing. In closed wet cooling towers, the heat transfer between the air and surface tubes can be composed of the sensible heat transfer and the latent heat transfer. The latent heat transfer is affected by the air and spray water. This study provides a designing methodology of heat exchanger for closed wet cooling tower. The correlation equation was derived to interpret the mass transfer coefficient based on the analogy of the heat and mass transfer and the experimental results. The results from this correlation equation showed fairly good agreement with experimental data.