Experimental Investigation and Performance Evaluation of a Multi Turn Closed Loop Pulsating Heat Pipe

Abstract:

Pulsating heat pipe (PHP) is a passive heat transfer device, which transfers heat from one region to another with exceptional heat transfer capacity. It utilizes the latent heat of vaporization of the working fluid as well as the sensible heat. As a result, the effective thermal conductivity is higher than that of the conductors. An experimental study on three turn closed loop pulsating heat pipe with three different working fluids viz., Acetone, Methanol, Heptane and distilled water were employed. The PHP is made up of brass material with an inner diameter of 1.95mm, with a total length of 1150 mm for different fill ratios (FR) was employed .The PHP is tested for the thermal resistance and the heat transfer coefficient. The experimental result strongly demonstrates that acetone is a better working fluid among the working fluids considered in terms of higher heat transfer coefficient and lower thermal resistance.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 1554-1558
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.1554
• Online since: July 2014
• Authors: N. Narendra Babu*, Rudra Naik
• Keywords: Fill Ratio, Heat Input, Heat Transfer Coefficient, Thermal Resistance

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