Experimental study in heat accumulators with a phase transition of matter R.M. Makhmudov, Z.X. Fayziev, Z.I. Kholmuradova, M.D. Uzboev and Sh.X. Taniberdiyev E3S Web of Conf., 524 (2024) 01002 Published online: 16 May 2024 DOI: 10.1051/e3sconf/202452401002