界面活性剤水溶液による自励振動型ヒートパイプ内蔵フィンの性能向上に関する研究

抄録

This study experimentally investigated the heat transfer characteristic of a fin with built-in closed-loop self-oscillating heat pipe by using surfactant aqueous solution. The fin part of test plate consists of 10 turns of small closed-loop meander channel. Two kinds of surfactants are used and the effects of surfactant concentration, base temperature of fin and fin thickness on the heat transfer performance of the fin with built-in closed-loop self-oscillating heat pipe are investigated. The result showed that the fin efficiency of surfactant aqueous solution case was improved due to the enhancement of boiling heat transfer by lower surface tension. When the base temperature of fin was higher, the effect of surfactant was not observed. On the other hand, when the base temperature of fin was lower, the surfactant aqueous solution case enhanced boiling heat transfer compared with water case. Moreover, the effect of surfactant concentration became larger. In the case of thinner fin thickness, it was found that the effect of surfactant was not clearly seen.