分散質の融解を伴うエマルション型蓄熱材の水平円管内強制対流熱伝達

抄録

In this study, heat transfer characteristics of emulsion type thermal storage material which a phase change material is emulsified and dispersed inside water in a horizontal circular tube was investigated. It was found that Nusselt number of emulsions reasonably agreed with that of single phase fluid when its dispersoid keep solid or liquid phase during heating. On the other hand, Nusselt number of emulsions was higher than the values when dispersoid were melting. Furthermore, Nusselt number in lower side of circular tube was higher than that of upper side. This result indicates that secondary convection was induced by melting of dispersoid.