マイクロカプセル相変化物質を用いた自励振動ヒートパイプの熱輸送性能向上

抄録

The heat transport performance enhancement in a pulsating heat pipe (PHP) was experimentally evaluated using a microencapsulated phase change material (MEPCM; melting point 60 °C). In these experiments, a one-turn U-shaped PHP with a square channel formed on a copper plate was used as the test channel. Ethanol with and without MEPCM were used as the working fluid. The mass fraction of MEPCM particles dispersed in ethanol was 0.5 wt.%. Experiments were conducted for various heater input power, and the wall temperature distributions and the relationships between the heat transport rate and the wall temperature difference between the heating section and the cooling section (heat transfer characteristics) were obtained for the working fluids (ethanol with and without MEPCM). The results indicated that MEPCM in the working fluid can enhance the heat transport performance of PHP.