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<p>Net positive buildings can be the solution to slow down climate change. Old buildings and minimum code buildings only strive for structural protection, but they do not play a part in climate change mitigation solutions. In this study, a north-facing 3-bedroom, 1-hall, and 1-kitchen (3-B-H–K) residential building plan with a two-car garage using the most commonly used construction materials in the Guwahati region of INDIA is considered as a base case scenario. With the input of weather data of 2020, the annual total energy consumption for the present climatic condition is simulated using the Ecotect tool. This paper investigates the potential impacts of climate change on thermal performances of residential buildings in this region of India, focusing on space cooling demand and thermal comfort. The study is based on detailed energy balance simulations at monthly time step and compares the buildings’ performance under recent climate conditions and under projected climate conditions for the years 2030, 2065 and 2090.&#xa0;Results indicate that both cooling and heating loads will increase under all projected emission scenarios. However, the overall modification case demonstrates significant energy savings up to 56.74% under present climate conditions, 38.86% under the RCP 4.5 scenario, and 32.18% under the RCP 8.5 scenario highlighting its effectiveness in reducing energy consumption and associated carbon emissions. The findings of this study suggest that the old building can be renovated and modified to act as a mitigation solution to climate change.</p>

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Effects of climate change on thermal comfort and energy performance of residential buildings

  • 期刊论文

  • 发表日期：

    2025年6月6日

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  • Biswadeep Bharali,
  • Basanta Rajbanshi,
  • Himal Dahal

摘要

Net positive buildings can be the solution to slow down climate change. Old buildings and minimum code buildings only strive for structural protection, but they do not play a part in climate change mitigation solutions. In this study, a north-facing 3-bedroom, 1-hall, and 1-kitchen (3-B-H–K) residential building plan with a two-car garage using the most commonly used construction materials in the Guwahati region of INDIA is considered as a base case scenario. With the input of weather data of 2020, the annual total energy consumption for the present climatic condition is simulated using the Ecotect tool. This paper investigates the potential impacts of climate change on thermal performances of residential buildings in this region of India, focusing on space cooling demand and thermal comfort. The study is based on detailed energy balance simulations at monthly time step and compares the buildings’ performance under recent climate conditions and under projected climate conditions for the years 2030, 2065 and 2090. Results indicate that both cooling and heating loads will increase under all projected emission scenarios. However, the overall modification case demonstrates significant energy savings up to 56.74% under present climate conditions, 38.86% under the RCP 4.5 scenario, and 32.18% under the RCP 8.5 scenario highlighting its effectiveness in reducing energy consumption and associated carbon emissions. The findings of this study suggest that the old building can be renovated and modified to act as a mitigation solution to climate change.