Abstract
This paper reports design, fabrication, and test results of a long-distance loop heat pipe (LLHP) with 10m heat transport distance. The previous LLHP could transport heat up to 160W for 10m with a thermal resistance between evaporator to condenser of 0.12 K/W. From the calculation of pressure drop, it reveals that the pressure drop in the liquid line is the largest among all elements of the LLHP. A new LLHP was re-designed with the same wick size. The test results agreed well with the calculated result. The effect of the gravity was also evaluated by changing its height.
