Paper Conference

Proceedings of eSim 2022: 12th Conference of IBPSA-Canada


Adjustments of Analytical Simplified Methods to Estimate the Effective Thermal Resistance of Masonry Walls

Maysoun Ismaiel, Yuxiang Chen
University of Alberta, Canada

Abstract: Determining the effective thermal resistance of masonry veneer walls is not a simple technique due to the thermal bridging effect. The lateral heat flows caused by highly conductive elements penetrating the insulation layer (e.g., ties) allow heat to be transferred in multiple directions that are considered a challenge in the R-value estimations. Energy savings and improved structural durability can be achieved through applying design considerations that address the thermal bridging effect. Therefore, this paper aims to suggest an adjustment of current thermal resistance estimation methods (i.e., isothermal planes and parallel path methods) to include the thermal bridging effects resulting from veneer ties in the effective R-value estimations. The analytical R‐values obtained using the adjustments were compared with numerical simulations using a 3D steady-state finite element method (FEM) in addition to experimental validation obtained from the literature.
Keywords: Masonry walls, Veneer ties, Clear walls, Thermal resistance, Thermal bridging