Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2022 - October 09, 2022
In order to improve the heat transfer performance of a heat pipe, the screen mesh wick contained in the copper tube container was pre-coated with a silica nanoparticle layer to enhance its capillarity. Pure water was used as the working fluid. In the experiment, the one end of the heat pipe was heated using a nichrome wire heater and the other end was cooled with saturated pool boiling of water. The experimental results showed that in comparison with the normal heat pipe, the thermal resistance decreased up to 59% and the maximum heat transfer rate increased up to 1.45 times if the amount of deposited nanoparticles was sufficient. It was also shown that the heat transfer performances are improved further if the nanofluid is used as the working fluid. It was confirmed that the improvements of the heat transfer performances can mainly be attributed to the capillarity of the wick material.
