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액화질소를 이용한 초저온용 기화기의 기화특성에 관한 실험적 연구
이용훈(Yong-Hun Lee),이상철(Sang-Chul Lee),전유신(You-Sin Chun),공태우(Tae-Woo Kong),정효민(Hyo-Min Jeong),정한식(Han-Shik Chung) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Recently, the vaporizers with greatly enhanced performance as compared to conventional type have been developed to fulfill these requirements. Generally, the frozen air is created by temperature drop on the vaporizer surface. In addition, the frost creates ice deposit layer, therefore, heat transfer on vaporizer decreases into the adiabatic condition. By this reason, recent vaporizer system is installed as parallel type, and it takes tree times of vaporizer capacity. But this vaporizer system requires much installation costs and restricted by some space. It is very important to solve this problem. This study paper is regarding air vaporizer where the utilization increases recently. There are three variable conditions which are used in this study research. First, fin lengths of 4000㎜, 6000㎜, 8000㎜ and 0, 4, 8 fin types were applied on each vaporizer. Second, we applied four season condition (spring, summer, autumn and winter) which consist of humidity, temperature and air velocity (3.5m/s~4.0m/s) to the experimental environment. Finally, pressure of 1㎏/㎠ was applied to get Flowrate during experiment. This paper objective is to propose vaporizer type and length data for best performance of vaporizer through experiment.