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This study assesses the influence of building orientation and window-to-wall ratio (WWR) on energy performance of buildings in Kabul, Afghanistan. Employing BEopt™ energy simulation software, the study investigated these parameters to identify their optimal configuration for maximizing energy efficiency. Findings indicate that the south orientation exhibits the lowest total energy demand, while the highest energy demand occurs when the window façade faces west-northwest. Proper building orientation can lead to a 44% reduction in annual energy consumption. Moreover, optimal WWR values are identified for different types of glazed windows on south-oriented facades: 20% for single, 35% for double, and 55% for triple-glazed windows, with energy savings of 8%, 12.9%, and 15.2%, respectively, compared to windowless facades. These findings provide valuable insights for architects and designers working in Kabul, Afghanistan, and can help them to design more energy-efficient buildings.

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Optimizing Building Design for Energy Efficiency of Buildings in Kabul, Afghanistan: A Study of Cost-Effective Passive Strategies

  • 会议论文

  • 发表日期：

    2025年

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  • Mustafa Karimi,
  • Tomoyuki Chikamoto,
  • Myonghyang Lee

摘要

This study assesses the influence of building orientation and window-to-wall ratio (WWR) on energy performance of buildings in Kabul, Afghanistan. Employing BEopt™ energy simulation software, the study investigated these parameters to identify their optimal configuration for maximizing energy efficiency. Findings indicate that the south orientation exhibits the lowest total energy demand, while the highest energy demand occurs when the window façade faces west-northwest. Proper building orientation can lead to a 44% reduction in annual energy consumption. Moreover, optimal WWR values are identified for different types of glazed windows on south-oriented facades: 20% for single, 35% for double, and 55% for triple-glazed windows, with energy savings of 8%, 12.9%, and 15.2%, respectively, compared to windowless facades. These findings provide valuable insights for architects and designers working in Kabul, Afghanistan, and can help them to design more energy-efficient buildings.