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
Streszczenie
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).
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).