Comparative efficiency of applying heat pumps within the system of disposal of the condensation heat of heat machines for heating ice arenasAleksey Kondrashov, Mikle Egorov, Ivan Kovalenko, Nadezhda Litvinova, Natal’ya Lavrovskaya and Irina KrectunovaE3S Web Conf., 140 (2019) 05011DOI: https://doi.org/10.1051/e3sconf/201914005011