Abstract
This paper describes heat transport from higher to lower positions using a top-heat-type two-phase loop thermosyphon with an electromagnetic switching valve. The objective of this study is to develop the heat transport device which transports large amount of heat with consuming external electric power as small as possible. In the previous report, the operation principle was explained and it was shown that this heat transport device had the probability of a practical use. Also, the temperature and pressure variations at main points of the apparatus, and the heat transport efficiency were shown. In this report, the reliable operation of this device is reconfirmed and the temperature differences between the evaporator and the cooling water are shown by changing the heat input and the cooling water temperature using water and ethanol as the working fluids.
