Thesis
Experimental analysis of a radial pulsating heat pipe
Washington State University
Master of Science (MS), Washington State University
05/2016
Handle:
https://hdl.handle.net/2376/103638
Abstract
In this study, the thermal performance of a radial pulsating heat-pipe (RPHP) was experimentally analyzed. RPHP is a passive thermal management device, which utilizes both thermal conduction and phase change. Conventional axial pulsating heat-pipe has been modified to radial shape; evaporation/boiling section is located at the center and condenser section outside, so as to enhance the heat spreading capability. RPHP performance results showed that working fluid successfully carries dissipated heat from the center (boiling section) to condenser section by the phase-change and the pulsating motions. Experiments was conducted with four different fill ratios at higher heat input, and three different fill ratios at lower heat inputs with a fixed fan power to analyze effects of the fill ratio and heat input. Also, the results were obtained using two different fan powers with a fixed fill ratio and heat input to consider effects of the fan power. With the 55% fill ratio at higher heat input (32W), the thermal resistance of the RPHP was the lowest, 0.328 OC/W while the thermal resistance without working fluid was 0.404 OC/W. The thermal resistance of the RPHP at lower heat input was 0.562 OC/W. These results show more heat is removed from the heater and transferred to the condenser section by selecting a reasonable fill ratio at higher heat input.
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Details
- Title
- Experimental analysis of a radial pulsating heat pipe
- Creators
- Yoshikazu Hayashi
- Contributors
- Yoon Jo Kim (Chair)Jong Hoon Kim (Committee Member) - Washington State University, Engineering and Computer Science (VANC), School ofHua Tan (Committee Member) - Washington State University, Engineering and Computer Science (VANC), School of
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Number of pages
- 60
- Identifiers
- 99900525077601842
- Language
- English
- Resource Type
- Thesis