低温潜熱物質を芯物質とする微細カプセル混合水を用いた蓄放冷システムに関する基礎研究 : 第3報,空気-微細カプセル化潜熱物質混合水の直接接触熱交換法による放冷熱特性

抄録

This paper deals with cold energy release characteristics of a fine capsulated latent-heat storage material-water mixture as a latent-heat-storage material having a low melting point of the core material (pentadecane, C₁₅H₃₂, freezing point 283.1 K). A direct-contact heat exchange method for an air-fine capsulated latent heat storage material-water mixture was selected to investigate the cold energy release characteristics from the mixture layer including the solidified core latent-heat-storage materials. The temperature effectiveness, the sensible-heat release time and the latent-heat release time were measured as experimental parameters. Useful nondimensional correlation equations for those parameters were derived in terms of nondimensional level of the mixture layer dimension, Reynolds number for air flow, Stefan number and heat capacity ratio.