TY JOUR TI CALCULATION METHOD OF CULTIVATION FACILITY COMBINED HEATING SYSTEM USING WINTER GREENHOUSE AS AN EXAMPL KW radiant-convective heating KW combined heating KW infrared emitter KW thermal capacity KW heater KW soil KW greenhouse JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Pavlov, M.V. AU Karpov, D.F. PY 2020 IS 4 PB Belgorod State Technological University named after V.G. Shukhov