社団法人日本機械学会 Acta Medica Okayama 0387-5016 65 635 1999 直接接触熱交換法を用いた中温度潜熱蓄熱槽の放熱特性 268 275 EN Hideo Inaba Akihiko Horibe Koichi Ozaki Kazuo Emoto Hiroyuki Kakiuchi Experiment has been performed of heat transfer characteristics of the middle temperature latent heat storage system of the direct-contact heat transfer by using m-E (meso-Erythritol, melting point of 119℃, latent heat of 375 kJ/kg) droplets as a latent heat storage material and silicone oil as a heat transfer medium. In the present study the liquid m-E was injected into the heat tranfer medium through a circular nozzle. The m-E droplets changed from liquid to solid phase during falling in the heat transfer medium at low temperature. From the measuring results of m-E droplet diameter, falling velocity, and solidification rate, the nondimensional empirical equations of the arithmetic mean diameter of the droplets and falling velocity, the solidification rate and the overall heat transfer coefficient were derived as a function of the characteristic arithmetic mean diameter, the terminal velocity, temperature and physical properties. No potential conflict of interest relevant to this article was reported.