Thermal Performance Analysis of close loop pulsating heat pipe with varying internal diameter at various heat inputs
Author(s):
Sachin S. Jadhao, Dr. Mangesh R. Dharme, Kapish T. Dhakukar
Keywords:
PHP, OHP, Thermal Resistance, Thermal Efficiency.
Abstract
Pulsating Heat Pipes (PHP) or Oscillating Heat Pipes are the young members of energy conversion family. They are most effective and are able to carry maximum heat from the source. But still they are under research and needs more reliable thermal performance data in order to validate its working phenomenon. Pulsating heat pipe are continuously under research which evolves new generated solution in order to fulfill present requirements of energy conversion solutions. Pulsating (or oscillating) heat pipes (PHP or OHP) are new two-phase heat transfer devices that rely on the oscillatory flow of liquid slug and vapor plug in a long miniature tube bent into many turns. The unique feature of PHPs, compared with conventional heat pipes, is that there is no wick structure to return the condensate to the heating section; thus, there is no counter current flow between the liquid and vapor. Heat addition and rejection and the growth and extinction of vapor bubbles drive the flow in a PHP. Applications of pulsating heat pipes are in HVAC, space applications (limited). In this paper Closed Loop Pulsating Heat Pipe is considered under experimentation. Internal diameter of PHP is varied and thermal readings are taken to find thermal resistance and efficiency of PHP. For that purpose we have considered three configurations as 1.5mm internal diameter, 2mm internal diameter and 1.5mm with 2mm alternate internal diameter. There thermal resistance and efficiency is compared with each other.
Article Details
Unique Paper ID: 153229

Publication Volume & Issue: Volume 8, Issue 6

Page(s): 182 - 188
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