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Which thermal insulation performance analysis documents are needed for energy-efficient aluminum curtain wall designs?

2025-12-10
Thermal documentation should enable compliance with energy codes and thermal comfort goals. Required items: (a) Whole-unit U-value measurements per ISO 10077 or ASTM C1363 and/or NFRC 100 for curtain wall/glazing assemblies; (b) Thermal transmittance (U-value) and center-of-glass values for panel sections, along with methodology and boundary conditions; (c) Thermal bridging analysis (2D/3D) using validated simulation tools (THERM, ISO 10211) with documentation of linear thermal transmittance (psi values) at mullion-to-slab, slab-edge, and interface details; (d) Condensation risk and surface temperature analysis (dew-point checks) for critical nodes, showing minimum interior surface temperatures under defined indoor/outdoor conditions; (e) Solar heat gain coefficient (SHGC) data for assemblies with glazing or solar-reflective coatings; (f) Whole-facade energy modelling inputs and results demonstrating compliance with local energy regulations (ASHRAE 90.1, EU Energy Performance standards) when required; (g) Thermal movement/expansion guidance and details for accommodating differential movement; (h) Test reports/stamped calculations and recommended installation details for continuous insulation and thermal break components. Provide editable simulation files and PDFs, specify simulation parameters, and include manufacturer thermal break datasheets.
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