Visualization Experiment on the Steady Operating Process of the close Loop Pulsating Heat Pipe

Xun Wang; Yun Zhao Li; Cheng Si Yang; Xiao Wen Zhang

doi:10.4028/www.scientific.net/AMR.732-733.318

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 732-733Visualization Experiment on the Steady Operating...

Visualization Experiment on the Steady Operating Process of the close Loop Pulsating Heat Pipe

Abstract:

A visualization experimental investigation for the pulsating heat pipe (PHP) was carried out to obtain the flow characteristics in the PHP steady operating process with controlling the input heat flux and condensing temperature. The experimental results show that the flow patterns are mainly slug flow with the intermittent pulsation at low heating power, churn flow, and annular flow with steady unidirectional circulation at high heating power. The flow direction switch phenomenon was also observed and analyzed. When the PHP heating section is occupied by vapor slugs for a long time, the backflow phenomenon provides liquid to the bottom of the heating section and reforms a new liquid slug.

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Periodical:

Advanced Materials Research (Volumes 732-733)

Pages:

318-321

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.732-733.318

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Online since:

August 2013

Authors:

Xun Wang, Yun Zhao Li, Cheng Si Yang, Xiao Wen Zhang

Keywords:

Flow Pattern, Pulsating Heat Pipe, Steady Operating Process, Visualization Experiment

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References

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