Steam reheater with helical tube bundle for wet steam turbine Mikle Egorov, Alexander Ivanov, Ivan Kovalenko, Irina Krectunova, Nadezhda Litvinova and Elena Popova E3S Web Conf., 178 (2020) 01069 Published online: 09 July 2020 DOI: 10.1051/e3sconf/202017801069