TY - JOUR T1 - Investigation of heating time of a bundle of steel bars A1 - Suren Aghbalyan A1 - Vazgen Bagdasaryan A1 - Rafał Wyczółkowski JO - Acta Sci. Pol. Architectura} VL - 21 IS - 3 SP - 21 Y1 - 2022 UR - https://www.architectura.actapol.net/volume21/issue3/_3_.pdf SN - 1644-0730 KW - steel porous charge, effective thermal conductivity, heat treatment, heating time AB - The paper deals with the problem of determining the heating time of a bundle of flat steel bars. To describe a mathematical model of transient heat transfer the energy balance method was used. The most important element is to determine the effective thermal conductivity coefficient using the electrical analogy. The simulations of heating were performed for increasing temperature of furnace. The results show that using different sizes and bundle arrangement the heating time can be reduced by 5–15%. The analysed problem is important from the practical point of view because it allows for optimization of heat treatment processes of steel bars. ER -