TY JOUR TI OPTIMIZATION OF THE CALCULATION OF THE THERMAL SCHEME OF A BOILER HOUSE WITH HOT WATER BOILERS KW heat source KW thermal scheme KW calculation KW replenishing water losses KW flow rate of chemically purified water JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Gubarev, A.V. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov