ABSTRACT

Experiments have been conducted on a flat rectangular loop heat pipe with water and methanol at heat loads from 40 to 320 W at three orientations of the heat pipe (0°, 45°, 90°) and two filling ratios (33% and 50%). Performance parameters such as thermal resistance, effective thermal conductivity and capillary limit are calculated from the experimental data. The results exhibited that the thermal performance of water is better than methanol with least thermal resistance 0.13 K/W, maximum capillary limit 2626.72 W and an effective thermal conductivity 84490.48 W/mK at a heat load 320 W in horizontal position for 33% filling ratio.

摘要

已在具有 40 至 320 W 热负荷的水和甲醇的扁平矩形回路热管上在热管的三个方向（0°、45°、90°）和两种填充率（33% 和 50%）上进行了实验）。根据实验数据计算热阻、有效导热系数和毛细管极限等性能参数。结果表明，水的热性能优于甲醇，最低热阻为 0.13 K/W，最大毛细管极限为 2626.72 W，有效热导率为 84490.48 W/mK，在水平位置 320 W 的热负荷下，填充率为 33% .