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Improving thermal transmittance estimation accuracy in cold-formed steel residential envelopes using response surface methodology: A numerical-based approach
Energy and Buildings ( IF 6.6 ) Pub Date : 2025-01-13 , DOI: 10.1016/j.enbuild.2025.115280
Yazeed Al-Radhi, Krishanu Roy, G.Charles Clifton, James B.P. Lim

The global motive towards sustainable and energy efficient construction has led to stricter building insulation requirements, such as those recently introduced in New Zealand. These changes pose challenges for cold formed steel (CFS), which is increasingly used in construction due to its many advantages. Furthermore, evaluating thermal transmittance in CFS envelopes using current calculation methods prescribed in standards often results in discrepancies when compared to experimental or validated numerical results. As a result, thermal modelling is recommended for more accurate estimations. However, such models can be resource-intensive, making them impractical for large-scale housing projects. This paper highlights the limitations of code-compliant methods relevant to CFS applications by comparing them with validated FEA models and introduces a simplified yet accurate calculation method using Response Surface Methodology (RSM). By comparing RSM results to validated numerical models, this study demonstrates the method’s effectiveness in predicting thermal resistance, offering a practical solution for designers and industry.

中文翻译:


使用响应面法提高冷弯型钢住宅围护结构的热透射率估计精度:一种基于数值的方法



全球对可持续和节能建筑的追求导致了更严格的建筑保温要求,例如新西兰最近引入的要求。这些变化对冷弯型钢 (CFS) 提出了挑战,由于其众多优点,冷弯型钢 (CFS) 越来越多地用于建筑。此外,与实验或验证的数值结果相比,使用标准中规定的当前计算方法评估 CFS 包络中的热透射率通常会导致差异。因此,建议使用热建模以获得更准确的估计。但是,此类模型可能是资源密集型的,因此对于大型住房项目不切实际。本文通过将 CFS 应用相关的符合规范的方法与经过验证的 FEA 模型进行比较,强调了这些方法的局限性,并介绍了一种使用响应面法 (RSM) 的简化而准确的计算方法。通过将 RSM 结果与经过验证的数值模型进行比较,本研究证明了该方法在预测热阻方面的有效性,为设计人员和行业提供了实用的解决方案。
更新日期:2025-01-13
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