TY JOUR TI TECHNO-ECONOMIC ASSESMENT OF RADIANT HEATING EFFECTIVENESS IN GREENHOUSES KW techno-economic assessment KW radiant heating KW infrared emitter KW agro-climatic system KW greenhouse KW general costs KW economic impact JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Karpov, D.F. AU Sinicyn, A.A. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov