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태양에너지 이용 저압 증발식 해수 담수시스템 이젝터 CFD 해석
황인선(Hwang In-Seon),주홍진(Joo Hong-Jin),곽희열(Kwak Hee-You) 한국태양에너지학회 2010 한국태양에너지학회 논문집 Vol.30 No.6
In this study, the ejector design was modeled using Fluent 6.3 of FVM(Finite Volume Method) CFD(Computational Fluid Dynamics) techniques to resolve the flow dynamics in the ejector. A vacuum system with the ejector has been widely used because of its simple construction and easy maintenance. Ejector is the main part of the desalination system, of which designs determine the efficiency of system. The effects of the ejector was investigated geometry and the operating conditions in the hydraulic characteristics. The ejector consists mainly of a nozzle, suction chamber, mixing tube (throat), diffuser and draft tube .Liquid is supplied to the ejector nozzle, the fast liquid jet produced by the nozzle entrains and the non condensable gas was sucked into the mixing tube. In the present study, the multiphase CFD modeling was carried out to determine the hydrodynamic characteristics of seawater-air ejector. Two-dimensional geometry was considered with the quadrilateral-mashings cheme. The gas suction rate increases with increasing Motive flow circulating rate.
그린홈 공동주택의 최적 에너지 공급시스템 설계를 위한 부하 예측 연구
박재완(Park Jae-wan),윤종호(Yoon, Jong-Ho),곽희열(Kwak, Hee-You),이재범(Lee, Jae-Bu),신우철(Shin, U-Cheul) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.1
More than 23% of total nation"s energy is consumed by residential building and 57.2% of Korean people are living in apartment. This study was carried out to two kind of process. First, after selecting one standard apartment, our research team investigate realistic energy consumption. Second, using 3-dimension heat transfer tool(TRISCO RADICON) and building energy simulation tool(Visual DOE) As a result, amount of heating and hot-water energy is composed of above 80 percent in standard apartment. And, after applying high performance technologies to standard apartment, namely, after being green home apartment, total energy consumption is reduced by54.6 percent. Also, because of energy consumption characteristics of green home apartment, for making more high performance green home apartment, especially, we have to figure out effective method to reduce electric and hot water energy.
태양에너지 해수담수화를 위한 증발식 다중효용 담수기 개발
주홍진(Joo Hong-Jin),황인선(Hwang In-Seon),윤상국(Yun Sang-kook),윤응상(Yun Eung-San),서태범(Seo Tae-Beom),곽희열(Kwak Hee-you) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4
This study was carried out to evaluate the performance for Multi Effect Distillation(MED) with solar energy desalination system. It designed and manufactured Multi effect distillation with 3㎥/day capacity in order to perform of evaluation. The parameters relating with the performance of Multi Effect Distillation are known as hot water flow rate. The experimental conditions for each parameters were 18℃ for sea water inlet temperature, 75℃ for hot water inlet temperature, 2.4, 3.6, and 4.8 ㎥/hour for hot water inlet volume flow rate, respectively. The results are as follows, Development for Multi effect distillation is required about 40㎾ heat source to produce 3㎥/day of fresh water. Based on the results of this study, It makes possible to secure economics of desalination system with solar energy which is basically needed development of high efficiency fresh water generator