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유직수(JikSu YU),호리베 아키히코(Akihiko HORIBE),하루키 나오토(Naoto HARUKI),김명준(MyoungJun KIM) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
In this study, in order to use waste heat in middle temperature region (100C-250C) from factories, it is investigated about fundamental melting and solidification characteristic of erythritol, mannitol, and their mixtures as phase change materials (PCMs), which are applicable for latent heat thermal energy system. The melting point of erythritol and mannitol, melting peak temperature of their mixtures, and latent heat were meaured by differential scanning calorimetry (DSC). The melting and solidification behavior of these PCMs put in the test tube was observed by the digital camera. The acquired conclusions are; 1) In the DSC measurement, it was found that at mannitol content from 10 to 30mass% and from 70 to 90mass%, these mixture have one and two melting peak temperature, respectively, and at mannitol content from 50 to 65mass%, it have three melting peak temperature. 2) In fundamental melting behavior of mixtures, it was confirmed that the melting behavior with repeated solidification and melting process does not change, and the density difference of solid phase and liquid phase affects the melting behavior.