Modern architectural designs often feature complex curved façades using glass, metal, or composite materials. While aesthetically striking, these structures introduce challenges in accurately assessing Energy Performance Certificate (EPC) ratings due to thermal bridging—the transfer of heat through structural elements that bypass insulation.
Key Considerations for EPC Assessment:
Localized Heat Loss – Curved façades may have joints, frames, and support structures where heat bypasses the insulation, leading to localized energy losses that EPC models must account for.
Variable Surface Geometry – The curvature alters heat transfer characteristics, making standard EPC assumptions for flat walls less accurate.
Material Interactions – Multiple materials in the façade, such as glass, steel, and insulation layers, interact thermally. This complexity can impact the building’s overall energy efficiency.
Simulation Requirements – High-accuracy EPC modeling may require finite element analysis (FEA) or other advanced simulation methods to capture thermal bridging effects accurately.
Strategies to Improve EPC Accuracy:
Detailed Façade Modeling – Input precise geometrical and material properties into EPC software to account for curved surfaces.
Advanced Thermal Analysis – Use simulation tools that incorporate thermal bridging calculations.
Expert EPC Assessors – Engage assessors with experience in complex façade structures to ensure realistic energy performance ratings.
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