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Development and Analysis of Easy-to-Implement Green Retrofit Technologies for Windows to Reduce Heating Energy Use in Older Residential Buildings

Author

Listed:
  • Sukjoon Oh

    (Department of Building Energy Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea)

  • Hosang Ahn

    (Department of Building Energy Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea)

  • Minjung Bae

    (Department of Building Energy Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea)

  • Jaesik Kang

    (Department of Building Energy Research, Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Republic of Korea)

Abstract

Green remodeling and retrofitting are effective strategies for enhancing the sustainability of existing buildings. While green remodeling involves significant structural modifications, green retrofitting typically focuses on improving energy efficiency and reducing environmental impact. However, easy-to-implement green retrofit technologies can be particularly valuable for low-income communities, offering a more affordable way to upgrade residences without extensive renovations. This paper analyzed the effectiveness of newly developed, easy-to-implement green retrofit technologies for windows in reducing heating energy use and greenhouse gas emissions. We conducted experiments using secondary glazing and windproof materials to enhance the thermal insulation and air-tightness performance of a residential building. Subsequently, we simulated the effectiveness of these green retrofit technologies under various conditions for residential buildings. In addition, we analyzed utility bills using data collected from residents. Our findings demonstrated an average reduction of 10–15% in heating energy consumption through the implementation of these green retrofit technologies for windows in older residential buildings.

Suggested Citation

  • Sukjoon Oh & Hosang Ahn & Minjung Bae & Jaesik Kang, 2025. "Development and Analysis of Easy-to-Implement Green Retrofit Technologies for Windows to Reduce Heating Energy Use in Older Residential Buildings," Sustainability, MDPI, vol. 17(8), pages 1-25, April.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:8:p:3307-:d:1630339
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    References listed on IDEAS

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    1. Dineen, D. & Ó Gallachóir, B.P., 2017. "Exploring the range of energy savings likely from energy efficiency retrofit measures in Ireland's residential sector," Energy, Elsevier, vol. 121(C), pages 126-134.
    2. Liu, Guo & Li, Xiaohu & Tan, Yongtao & Zhang, Guomin, 2020. "Building green retrofit in China: Policies, barriers and recommendations," Energy Policy, Elsevier, vol. 139(C).
    3. Sheng-Yuan Wang & Kyung-Tae Lee & Ju-Hyung Kim, 2022. "Green Retrofitting Simulation for Sustainable Commercial Buildings in China Using a Proposed Multi-Agent Evolutionary Game," Sustainability, MDPI, vol. 14(13), pages 1-32, June.
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