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RISS 인기검색어
- 검색키워드
- 저자 : 우재호(Jaeho Woo) (검색결과 2 건)
- 무료
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Bubble Jet Loop Heat Pipe의 열전달 및 유동특성에 관한 실험적 연구
정동광(Dongkwang Jeong),우재호(Jaeho Woo),김종수(Jongsoo Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
Bubble jet loop heat pipe is a newly devised variation of heat pipe in which heat is effectively transported by the latent heat of evaporation and condensation as well as the heat capacity of circulating working fluid. The circulatory and oscillating motion of the working fluid becomes possible by the motion of bubble jet which is generated at a narrow circular gap. These bubble are condensed at the condensing section, bubble jet loop heat pipe makes it possible to carry heat long distances upward and horizontal directions. Because its structure is a very simple and a low cist, it is available for the floor heating, green house heating, the defrosting of heat pump system and home refrigerator. This study shows whether the heat pipe operates well in the horizontality or not, and what optimized refrigerant charging rate is in the tube. But flow visualization of bubble jet heat pipe was not known. The purpose of this study is to research the performance of heat transfer of bubble jet loop heat pipe and to visualize bubble jet loop heat pipe. The experiment was performed by changes of charging rate. Working fluid was R-141b. and heater of 220V & 100W was used. we take a photograph of flow visualization of bubble jet loop heat pipe in slow motion.
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강화폴리에스테르튜브(XL 튜브)에 진동형 히트 파이프를 결합한 고성능 난방 패널의 성능에 관한 연구
김창희(Changhee Kim),김종수(Jongsu Kim),우재호(Jaeho Woo),공상운(Sangwun Kong) 대한설비공학회 2008 대한설비공학회 학술발표대회논문집 Vol.2008 No.2
Korea which has change of clear season is using unique heater by the name of On-dol being invented since ancient times. Floor-heating device has no radiator, and generates no noise and dust. It can obtain satisfied heating sense than other heating system in low room temperature. And also it is a pleasant system that equals bottom and top temperature in a room. The purpose of this study is to develop the Floor-heating device using pulsating heat pipe. It propose floor-heating device using pulsating heat pipe of the dry process which alternative polyethylene pipe(low XL pipe) that is used widely to existent floor heating system and produce pilot Experiment and analyzed operation condition and performance of most suitable. In this study, main purpose is to develop floor-heating system using pulsating heat pipe by finding an optimum working condition according to changing ratio and evaluating a performance.
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