Regular Article

An investigation on effect of EDL on heat transfer of micro heat pipe with square and triangular cross section

¹ Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
² School of Mechanical Engineering, College of Eng. University of Tehran, Tehran, Iran

^* e-mail: ho.shokouhmand@gmail.com

Received: 8 December 2017
Accepted: 9 February 2020

Abstract

Electronic industries have always been trying to improve the efficiency of electronic devices with small dimensions through thermal management of this equipment, thus increasing the use of small thermal sinks. In this study micro heat pipes with triangular and square cross sections have been manufactured and tested. One of the main objectives is to obtain an understanding of micro heat pipes and their role in energy transmission with electrical double layer (EDL). Micro heat pipes are highly efficient heat transfer devices, which use the continuous evaporation/condensation of a suitable working fluid for two-phase heat transport in a closed system. Since the latent heat of vaporization is very large, heat pipes transport heat at small temperature difference, with high rates. Because of variety of advantage features these devices have found a number of applications both in space and terrestrial technologies. The theory of operation micro heat pipes with EDL is described and the micro heat pipe has been studied. The temperature distribution have achieved through five thermocouples installed on the body. Water and different solution mixture of water and ethanol have used to investigate effect of the electric double layer heat transfer. It was noticed that the electric double layer of ionized fluid has caused reduction of heat transfer.