12. Thermal analysis of RT-82 paraffin, hydrated sodium sulphide and 4A zeolite

Analiza termiczna parafiny RT-82, uwodnionego siarczku sodu i zeolitu 4A
 Daniel Smykowski, Janusz Lichota
heat storage, phase change material (PCM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA)
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The aim of the article is to define the basic parameters of the phase change material – RT-82 paraffin, hydrated sodium sulphide and zeolite 4A, like phase transition temperature (melting point), latent heat, the temperature at which melting begins (onset temperature) and ends (offset temperature). It was found that selected substances are useful for heat storage for house heating. Volume heat capacity was equal to 1.68 GJ/m3 (Na2S*9H2O), 0.37 GJ/m3 (zeolite 4A) and 0.31 GJ/m3 (RT-82).