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One of the most critical tasks of modern energy is accumulating thermal energy due to the inefficient use of thermal energy during the underloading of power systems in which heat-accumulating materials are used. Therefore the paper studies the effect of alternating electric current on the heat-accumulating properties in a mixture based on Na 2 SO 4 ·10H 2 O. It is established that the AC effect leads to an increase in the melt crystallization temperature of Na 2 SO 4 ·10H 2 O and Na 2 S 2 O 3 ·5H 2 O and also contributes to the return of heat. The selection of the treatment mode of the Na 2 SO 4 ·10H 2 O–Na 2 S 2 O 3 ·5H 2 O (50: 1 wt.) mixture by the AC was carried out. It was shown that the latent heat of melting of 329 kJ/kg is achieved at 5 Hz frequency.

Influence of alternating electric current on the process of heat accumulation in a mixture of Na 2 SO 4 ·10H 2 O–Na 2 S 2 O 3 ·5H 2 O