Proposal of a correction factor for predicting the thermal transmittance of building envelopes in existing buildings accounting for aging and environmental conditions

Synthetic dataset generation of energy consumption for residential apartment building in cold weather considering the building's aging

“…Thermal transmittance property is a pivotal property for thermal comfort and energy consumption of thermal zones. In order to address the aging analysis, an estimation of the thermal transmittance is calculated based on weighing factors and reference thermal transmittance at the time of new construction [13] .…”

“…Unfavourable conditions correlate with an elevated overall thermal transmittance value. The methodology utilized in this work is in accordance with the suggested standard ISO 15686-2 [13] , which guides the allocation of values for each weighting factor. These coefficients, assigned to individual subfactors, encapsulate the potential impact on the thermal degradation of the building envelope.…”

“…Intermediate interactions are assigned a rating of 0.97. The aging calculation methodology [13] can be described by …”

“…Case 1 represents mild conditions for aging, which implies a lower value for the corresponding weighing factors, indicating that the impact of aging is mitigated. Cases 2 and 3 (moderate and severe) followed the scale of the magnitude described in the methodology of [13] , where the external conditions accelerate the building envelope's aging. In all cases, the architectural characteristics of the studied building will remain the same.…”