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가압조건이 정지상태 과냉각 수용액의 해소에 미치는 영향
김병선(Byungseon Kim),백종현(Jong-Hyun Peck),홍희기(Hiki Hong),강채동(Chaedong Kang) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
Supercooled type ice slurry system is hard to keep a proper supercooling degree when solution becomes supercooling state. This is the reason of the ice blockage in pipe or cooling part due to an unstable cooling state In this study, a cooling experiment was performed to pressurized solution in a stationary state. The behaviors during the supercooled aqueous solution were investigated at fixed flow rate of brine and aqueous solution of ethylene glycol 7 mass%. Also the effect to the freezing point of supercooled aqueous solution was investigated to the different pressure 101, 202, 303, and 404 ㎪. At results, the pressure of the aqueous solution in the cylinder increased the supercooling degree increased and dissolution of supercooled point decreased.
정지상태 수용액에서 가압과 냉각속도가 과냉각해소에 미치는 영향
김병선(Byungseon Kim),백종현(Jong-Hyun Peck),홍희기(Hiki Hong),강채동(Chaedong Kang) 대한설비공학회 2007 설비공학 논문집 Vol.19 No.12
In a supercooled or capsule type ice storage system, aqueous solution (or water) may have trouble with non-uniform dissolution though the system contributes to the simplicity of system and ecological improvement. The non-uniform dissolution increases the instability of the system because it may cause an ice blockage in pipe or cooling part. In order to observe the supercooled state, a cooling experiment was performed with pressurization to an ethylene glycol(EG) 3 mass% solution in stationary state. Also, the effect of the pressurization from 101 to 505 ㎪ to the dissolution of supercooled aqueous solution was measured with the dissolution time of the supercooled aqueous solution at a fixed cooling rate of brine. At results, the dis-solution of supercooled point decreased as the pressure of the aqueous solution in the vessel increased. Moreover, the dissolution point increased as the heat flux for cooling increased.