| Engineering Sciences |
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| EXPERIMENTAL STUDY ON SEMI-OPEN HEAT PIPES AND ITS APPLICATIONS |
| ZHU Hua, GUAN Jian-chun, HONG Rong-hua, TU Chuan-jing |
| Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China; Energy Conservation Center of Zhejiang Province, Hangzhou 310027, China |
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Abstract Semi-open heat pipes were studied experimentally in this work. A new kind of semi-open heat pipe with fluid swirl backflow was developed on the basis of the traditional semi-open heat pipe. Heat transfer characteristics during operation and start-up of closed heat pipe, traditional semi-open heat pipe and swirl flow semi-open heat pipe were investigated. The swirl orifice\'s backflow effect on enhancing the working limitation was obtained. Heat exchangers or waste heat boilers made of swirl flow semi-open heat pipes and semi-open heat pipes have been successfully used in high or variable gas temperature engineering applications.
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Received: 25 July 2000
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