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Performance Characteristics of a Heat Pipe Having Water-Ethanol Mixture as Working Fluid for Evacuated Solar Collectors  

Jung, Eui-Guk (Graduate School, Korea Aerospace University)
Boo, Joon-Hong (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Kwak, Hee-Youl (Korea Institute of Energy Research(KIER))
Publication Information
Journal of the Korean Solar Energy Society / v.28, no.5, 2008 , pp. 78-84 More about this Journal
Abstract
Heat pipes are considered to be promising candidates to enhance the heat transport capability of evacuated solar collectors in a wide temperature range. The working fluid must be selected properly considering various operating conditions of heat pipes for medium-high temperature range to avoid dry-out, local overheating, and frozen failure. The advantage of using binary mixture as heat pipe working fluid is that it can extend operating temperature range of the system as it can overcome operating temperature limit of a single fluid. Various operating temperature ranges were imposed in the experiments to simulate the actual operation of solar collectors using water-ethanol binary mixture. Tests were conducted for the coolant temperature range of -10$^{\circ}C$ to 120$^{\circ}C$, and mixing ratio range was from 0 to 1 based on mass fraction.
Keywords
Evacuated solar collector; Heat pipe; Binary mixture; Water-ethanol;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 정의국, 정원복, 부준홍,"중온범위에서2성분 혼합물을 작동유체로 사용하는 히트파이프의 열성능 연구", 대한설비공학회 하계학술발표대회, 제2권, pp. 887-892, 2004
2 정원복, 부준홍, 곽희열, 천만석, "중온 응축부 온도 범위에서 편조윅 및 슬랩윅 갖는 히트파이프의 성능비교 연구", 대한기계학회 열공학 부문 추계학술대회 눈 문집, pp.163-186, 2001
3 부준홍, 정환수, 곽희열, 강용혁, "물과 에탄올을 작동유체로 하는 중온범위 슬랩-윅 히트파이프의 성능 시험, 한국태양에너지학회 추계학술대회 논문집, pp. 121-126, 1999
4 부준홍, 정원복, 곽희열, "확관 응축부를 갖는 진공관형 태양열 집열기용 히트파이프 성능 비교 연구", 한국태양에너지학회논문집, Vol. 22, No. 4, pp.18-25, 2002
5 부준홍, 정환수, 곽희열, 강용혁, "중온번위 태양열 집열기용 히트파이프의 성능시험", 한국태양에너지학회 춘계학술대회 논문집, pp. 36-43, 1999
6 Pioro, L. S., Pioro, I. L., 1997, Industria l Two-phase Thermosyphons, Begell Bouse, pp. 96-291, 1997
7 Jung, E. G., Chung, W. B., and Boo, J. H., "Performance of Heat Pipes for Solar Collector Using Binary Mixture Wor king Fluid", The 7th International Heat Pipe Symposium, pp. 140-145, 2003
8 Boo, J. H., and Chung, H. S., "An Experimental Study of a Slab-wick Heat Pipe for Medium-high Condenser Temperatures", 11th International Heat Pipe Conference, A11-3, 1999