| dc.description.abstract |
In this study, the thermal performance of window structures is analyzed using two- dimensional simulation. The primary objective is to determine the optimal combination of frame materials and glass panes for enhancing thermal efficiency in buildings across Bangladesh. The analysis covers temperature variations for both winter and summer seasons, with thermal conductance (L2D), frame thermal transmittance (Uf), and surface temperatures of individual window components calculated using the Finite Element Method. Additionally, a three-dimensional simulation is performed to determine time- dependent heat flux through the wooden window structure, providing a more comprehensive understanding of heat transfer behavior. Five frame materials: aluminum, PVC, aluminum-polyamide, PVC-polyamide, and wood are evaluated for single glass pane and double glass pane windows. The findings indicate that while wood provides excellent insulation for certain parts of windows, its widespread use could pose significant environmental risks due to the limited availability of wood resources in Bangladesh. Alternatives such as PVC and PVC-polyamide not only offer comparable or superior thermal performance but also represent a more sustainable choice. Double-pane windows offer significantly better insulation than single-pane windows, with improvements in thermal performance ranging from approximately 8% to 68% in L2D, and from 23% to 91% in Uf, depending on the material and part of the window. The significance of implementing these materials to address the dual issues of resource sustainability and energy efficiency in developing nations such as Bangladesh is emphasized in this study. The findings can be applied to real-world construction projects and inform policymaking to promote sustainable building practices, ensuring both thermal comfort and environmental conservation. |
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