Proceedings of the
International Conference on Mechanical Engineering 2009
(ICME2009) 26- 28 December 2009, Dhaka, Bangladesh

ICME09-TH-13

EXPERIMENTAL INVESTIGATION OF AN OPEN LOOP CLOSED
END PULSATING HEAT PIPE

Tahanee Mujib, Fahim Ahmed and Chowdhury Md. Feroz
Department of Mechanical Engineering, Bangladesh University of Engineering and Technology, Dhaka,
Bangladesh

ABSTRACT

This paper presents an experimental study of an open loop pulsating heat pipe (OLPHP) of 0.9 mm inner diameter. The performance characterization has been done for two working fluids at vertical and horizontal orientations. Water and Acetone are employed as the working fluid with 50% fill ratio. The experimental results indicate a strong influence of gravity and thermo physical properties of the working fluids on the performance of OLPHP. Regarding the working fluids, Water has performed better in both vertical and horizontal orientation as lower evaporation temperature has been achieved at all heat loads. Both working fluids perform better at horizontal orientation. OLPHP of 0.9 mm ID in this experiment shows better thermal performance as compared with experimental results of Roger R. Reihl [1] performed with OLPHP of 1.5 mm ID.

Keywords: Pulsating Heat Pipe, Inclination Angles, Pulsating Action, Diametrical Effect

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