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단일 셀에서의 소수다공성 멤브레인의 증발냉각 성능에 대한 실험적 연구
이건후(Keon Hu Lee),김정철(Jeong Chul Kim),윤석호(Seok Ho Yoon) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.11
Studies related to membrane technology have been paid attention due to its low cost, eco-friendliness and compactness. This paper describes the potential use of hydrophobic membranes in direct evaporative cooling applications for heating, ventilation and air conditioning (HVAC) systems. In the case of direct cooling system, there are disadvantages such as bacteria, including Legionella, from water to air compared to indirect evaporative cooling. So, this system proposes the membrane as a barrier to reduce the disadvantages of direct cooling system. In this study, experimental comparisons of cooling rate and evaporation rate are conducted respectively according to variation of air volume rate and velocity. Test results from this study will be used for design of membrane evaporative cooling system.
단일 셀에서 소수다공성 멤브레인의 증발냉각 방법별 성능 비교에 대한 실험적 연구
이건후(Keon Hu Lee),윤석호(Seok Ho Yoon),김영(Young Kim),김정철(Jungchul Kim) 대한설비공학회 2019 설비공학 논문집 Vol.31 No.12
Studies related to membrane technology have been attracting attention because of low cost, eco-friendliness, and compactness. This paper describes the potential use of hydrophobic membranes in semi-direct evaporative cooling applications for heating, ventilation, and air conditioning (HVAC) systems with the air sweeping membrane evaporation method and vacuum membrane evaporation method. The vacuum membrane evaporation methods with desiccant and without desiccant were conducted to assess the impact of the desiccant. The evaporation rate and the cooling rate of each method increased with the higher air volume flow rate and the higher vacuum pressure difference. In this study, experimental comparison of cooling methods was conducted respectively. Test results from this study will be used for design of membrane evaporative cooling system.