3次元自励振動ヒートパイプの熱輸送特性に及ぼす熱負荷変動の影響

抄録

Heat transport characteristics of three-dimensional pulsating heat pipe (3D-PHP) have been investigated experimentally. The 3D-PHP consists of 20 tubes and heating block made of copper. The 3D-PHP has 2 layers of 5 turn flow paths (10 tubes) and the layers are interconnected. Fluorinert FC-72 was used as the working fluid and filling ratio was 50 % of the channel volume. The 3D-PHP was tested for various air velocity and heat load. Heat load increased by 10 W to 100 W and decreased by 100 W to 10 W. It was found that thermal resistance in the case of decreased heat load was lower than that in the case of increased heat load for the same heat load.