Experimental study in heat accumulators with a phase transition of matterR.M. Makhmudov, Z.X. Fayziev, Z.I. Kholmuradova, M.D. Uzboev and Sh.X. TaniberdiyevE3S Web of Conf., 524 (2024) 01002DOI: https://doi.org/10.1051/e3sconf/202452401002