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용액유량에 따른 플레이트 흡수기의 흡수 열전달 특성 실험
문춘근(C.G.Moon),방기석(G.S.Bang),김재돌(J.D.Kim),윤정인(J.I.Yoon) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
An experimental study of the absorption process of water vapor into a lithium bromide solution was performed. for the purpose of development of high performance absorption chiller/hater utilizing lithium bromide solution as working fluid, it is the most effective to improve the performance of absorber with the largest heat transfer area of the four heat exchangers. The experimental apparatus was composed of a plate type absorber which can increase the heat exchange area per unit volume to investigate more detail characteristics instead of the conventional type, horizontal tube bundle type. The size of plate absorbers were made for 0.4m×0.6m and the design object of a refrigeration capacity was 1RT. In this experiment, three kind plate absorbers which were flat plate, dimple plate and groove plate were used. The results were less than the design object values, that is, the refrigeration capacity was about 0.3~0.4RT and the overall heat transfer coefficient was 500~600 kcal/m²h℃ at the standard conditions.
직교ㆍ대향류 충진재를 이용한 하이브리드 냉각탑에 대한 실험적 연구
전철호(C. H. Jun),이호생(H. S. Lee),이호출(H. C. Lee),문춘근(C. G. Moon),김재돌(J. D. Kim),윤정인(E. J. I. Yoon) 한국마린엔지니어링학회 2005 한국마린엔지니어링학회 학술대회 논문집 Vol.2005 No.-
An experimental study on the Hybrid Cooling Tower has been done having a rated capacity of 3RT. Counter flow type fill, cross flow type fill and hybrid-type fill which is combined with two type fills as previously stated having a height of 0.3m have been used in the 0.8m?0.4m?1.9m dimensional tower respectively. The heat exchanger is consisting of 2 or 3 rows. The relevant temperatures and the velocities were selected based on the typical Korean weather for the year round operation of the tower. The cooling capacity of the tower is explained with respect to varying air inlet velocities, wet-bulb temperatures, and air to cooling water volume flow rate ratio (L/G ratio). The capacity of the hybrid-type fill was much superior to other fills, but hybrid-type fill shows higher pressure drop.
장걸(G. Chang),김은필(E. P. Kim),전철호(C. H. Jeon),이호생(H. S. Lee),문춘근(C. K Moon),윤정인(J. I. Yoon) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The performance of cooling tower is dependent on the thermal performance of the packings. It's assessed by measuring packing characteristic values and pressure drops. In this study, a hybrid fill packing cooing tower is developed by combining the counter flow type fill packing with the cross flow type fill packing. Numerical investigation on the hybrid fill packing cooling tower has been done preliminary to experimental investigation. The result shows that cooling capacity on the hybrid fill packing cooling tower is higher than existing counter and cross flow type cooling tower as the experimental study. But The pressure drops on hybrid fill packing cooling tower are about 20% higher than other type cooling towers.