Abstract
Materials that can store low temperature latent heat are organic/inorganic chemicals, eutectic salt system and clathrate compounds. A clathrate compound is the material that host (water; H2O) molecule in hydrogen bond forms cage and guest (Gas) molecule is included into it and combined. Crystallization of hydrate is generated at higher temperature than that of ice from pure water. And physical properties according to temperature are stable and congruent melting phenomenon is occurred without phase separation and it has relatively high latent heat. But clathrate compound still has supercooling problem occurred in the course of phase change and supercooling should be minimized because it affects efficiency of equipment very much. Therefore, various studies on additives to restrain this or heat storage methods are needed. This study was investigated the cooling characteristics of the TMA-water clathrate compound as a low temperature latent heat storage material. And additive was added to TMA-water clathrate compound and its supercooling restrain effect was studied experimentally.
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