Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 12, 2019 - October 13, 2019
In the previous research, the heat transport experiment was performed by comparing the heat transport device with parallel tubes of thin-type, 1 mm in depth and 4 mm in width, and that of the conventional-type, 2 mm in depth and 2 mm in width, using water. The result was that the heat transport rate of the thin-type was significantly lower than that of the conventional type. This was due to the problem that when certain input of heat flux was exceeded, the working fluid in the evaporator evaporated completely, and a dry-out occurred, therefore the heat transport performance suddenly decreased. In this research, in order to solve this problem, 1-butanol, 2-butanol, 2-propanol and ethanol were used as the aqueous alcoholic solution for the working fluid in the thin-type test pieces. The heat transport experiment was performed at each concentration of aqueous alcoholic solution. Although the physical property values of those four alcohols are inferior to water, the aqueous alcoholic solution had a large influence on the internal flow and heat transport. 25% 2-Propanol had the highest heat transport rate.
