TY JOUR TI INCREASING THE ENERGY EFFICIENCY OF WALLS BY INCLUDING PHASE CHANGE MATERIALS IN THEIR STRUCTURE KW phase change materials KW phase transition KW energy saving KW energy consumption KW hysteresis KW thermal energy storage KW energy efficiency JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Taranenko, D.V. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov