TY JOUR TI COMPLEX APPROACH METHODOLOGY AT DESIGNING VENTILATING EQUIPMENT WITH HEAT RECUPERATOR FOR ENTERPRISES OF ENGINEERING INDUSTRY KW mechanical engineering KW ventilation system KW recuperator KW power effectiveness KW recoupment KW condensate JO Bulletin of Bryansk state technical university AU Galyuzhin, S.D. AU Lobikova, O.M. PY 2021 IS 2021 PB Bryansk State Technical University