社団法人日本機械学会 Acta Medica Okayama 0387-5016 62 602 1996 低凝固点油滴の凝固を利用した潜熱蓄冷熱に関する基礎研究 : 第3報, 粒状凝固潜熱蓄冷熱材と温空気の直接接触熱交換による放冷熱特性 172 179 EN Hideo Inaba Kenji Sato This paper deals with the cold latent heat energy release characteristics of direct-contact heat exchange between the solidified oil droplets [tetradecane, CH_3(CH_2)_<12>CH_3, melting point5.8℃] and hot air. Hot air is injected into the solidified oil droplet-water mixture layer from the distributor with a number of small circular nozzles. The solidified oil droplet-water mixture layer is fluidized by the air bubbles ascending in the layer, and the air bubbles are cooled from the layer by the direct-contact heat exchange. This paper deals with the characteristics of temperature and humidity of the outlet air from the layer, and time history of the cold heat energy release. The experiments were performed with respect to several experimental parameters, i. e., air flow rate, air temperature and humidity, and the amount of oil droplets and water in the mixture layer. Finally, some empirical correlations for the outlet air temperature and humidity and the finishing time of cold latent heat release were derived in terms of various nondimensional parameters. No potential conflict of interest relevant to this article was reported.