C122 ナノ流体中のCHF向上特性に及ぼす熱流束の影響(OS9 熱・流動(3))

抄録

In this study, effects of heat flux and nanofluid dispersion condition on the boiling heat transfer (BHT) and critical heat flux (CHF) m water pool boiling were investigated. For the heat flux effect, five different heat fluxes were applied to the heated surface during the nanoparticle deposition process with setting the boiling time in nanofluid to 0, 1, 3, 10 and 20 minutes. Static contact angle, BHT and CHF characteristic in relation with heat fluxes and boiling time were discussed. In addition, effect of nanoparticles dispersion stability was investigated by two kinds of nanofluid preparation method: one-step and two-step methods. These different preparation methods resulted in different level of nanofluid stability. Its effect on CHF performance in pool boiling was investigated.