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기구적 설계변수에 따른 판형열교환기의 성능특성에 관한 해석적 연구
손재욱(Jaewook Son),강훈(Hoon Kang),김용찬(Yongchan Kim),박재홍(Jaehong Park),조성열(Sungyoul Cho),임혁(Hyug Lim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Plate heat exchangers have been widely adopted in many industrial applications due to their compactness and high efficiency. Even though the studies on the plate heat exchangers have been performed by many researchers, the studies on the geometric parameters except chevron angle are very limited in open literature. In this study, a simulation algorithm was developed using empirical correlations, and the predicted data were compared with the measured data to validate the model. The effects of the geometric parameters on the heat transfer and pressure drop characteristics of plate heat exchangers were investigated analytically by varying the design parameters such as the chevron angle, plate pitch and aspect ratio at the constant process conditions. In addition, the optimum design methods for the plate heat exchanger were discussed.
알루미늄 플레이트-핀 열교환기의 분배기 형상비에 따른 분배특성에 관한 해석적 연구
이응찬(Eungchan Lee),강훈(Hoon Kang),허재혁(Jaehyeok Heo),김용찬(Yongchan Kim),박재홍(Jaehong Park),조성열(Sungyoul Cho) 대한기계학회 2011 大韓機械學會論文集B Vol.35 No.8
알루미늄 플레이트-핀 열교환기는 석유 및 가스 처리공정에서 널리 사용되고 있다. 알루미늄 플레 이트-핀 열교환기의 성능은 각 유체의 헤더 및 분배기에서의 분배 성능에 의하여 크게 영향을 받는다. 본 연구에서는 CFD(Computational fluid dynamics)를 이용하여 알루미늄 플레이트-핀 열교환기의 측면 입구 형태의 분배기를 모델링하고, 입구 조건과 형상비의 변화에 따른 상대 및 절대 불균등 분배도를 고찰하여 최적 분배기 형상비를 제시하였다. Aluminum plate-fin heat exchangers (ALPHEs) are widely used in petroleum and gas-treated processes. The performance of the ALPHE is strongly dependent on the distribution characteristics of the header and the distributors of each fluid. In this paper, we define the aspect ratio in the side-entry type distributor and analyze the distribution characteristics using CFD-based numerical methods. The phenomena of velocity deviation and distribution with the aspect ratio and the inlet Reynolds number were analyzed by applying relative and absolute maldistribution parameters, and an optimum aspect ratio with the inlet Reynolds number was presented.
판형열교환기 열전달 및 압력강하 성능해석 프로그램 개발
손재욱(Jaewook Son),이응찬(Eungchan Lee),강훈(Hoon Kang),김용찬(Yongchan Kim),박재홍(Jaehong Park),조성열(Sungyoul Cho) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
Plate heat exchangers have been widely adopted in many industrial applications due to their compactness and high efficiency. In this study, a simulation algorithm was developed using semi-analytical correlations, and the predicted data were compared with the measured data to validate the model. The analytical pressure drop correlation were corrected by comparing with the measured data, and applied to the performance analysis program. In conclusion, the calculated pressure drop data showed the difference less than 5-10%, comparing with the measured data.