Experimental Investigations on Thermal Performance of a Multi-Turn Closed Loop Pulsating Heat Pipe

Abstract:

Closed loop pulsating heat pipe (CLPHP) is a relatively new two-phase passive heat transfer device to suit present requirement of high heat flux dissipation in modern electronic components. The operating mechanism of CLPHP is not well understood and the present state of the technology cannot predict required design parameters for a given task. The aim of research work presented in this paper is to better understand thermal performance of CLPHP. A series of experimental investigation were conducted on a multi-turn CLPHP made of copper capillary tube of 2-mm inner diameter. Two kinds of working fluids viz. ethanol and acetone were employed. The influence characterization has been studied for the variation of heat input and filling ratio (FR) of the tested CLPHP. Thermal performance of the CLPHP is evaluated by heat transfer and thermal resistance. The results strongly demonstrate the effect of heat input and FR of the working fluid on thermal performance of the device.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 5854-5860
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.5854
• Online since: January 2012
• Authors: Yu Wang, Wei Yi Li
• Keywords: Closed Loop Heat Pipe (CLPHP), Filling Ratio (FR), Heat Transfer, Multi-Turn, Thermal Performance

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