３次元自励振動ヒートパイプの実験的研究

抄録

Heat transport characteristics of three-dimensional pulsating heat pipe (3D-PHP) have been investigated experimentally. The 3D-PHP consists of 2-layer tube banks and a heating section made of a copper block. Each layer has 5 turn flow path, and they are inter-connected. The heating section was heated from bottom, and the tube bank section was cooled by air flow. Ethanol was used as the working fluid, and filling ratio was 50%. The 3D-PHP was tested for various air velocity, heat inputs and length of heating section. The results show that the start-up condition and thermal resistance were influenced by the length of heating section when heat input was low. However, when heat input was high, the effect of the length of heating section was not significant.