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Energy-Saving and Ecological Renovation of Existing Urban Buildings in Severe Cold Areas: A Case Study

Author

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  • Ying Liu

    (Faculty of Art and Design, Wan Jiang Institute of Technology, Ma’anshan 243000, China)

  • Depeng Chen

    (Architectural Engineering Institute, Anhui University of Technology, Ma’anshan 243032, China)

  • Jinxian Wang

    (Architectural Engineering Institute, Anhui University of Technology, Ma’anshan 243032, China)

  • Mingfeng Dai

    (Faculty of Art and Design, Wan Jiang Institute of Technology, Ma’anshan 243000, China)

Abstract

High-rise buildings in cold regions have a requirement of ecological improvement due to the continuous response to climate change throughout the year. This study evaluates wind environment, light environment, thermal environment, and energy consumption environment using Phoenics, Ecotect, and DesignBuilder tools, utilizing a high-rise residential building in an intensely cold place as an example. With the goal of repairing the buildings, green energy-saving measures are applied from the perspectives of form, structure, system, and equipment strategy. The energy-saving rates and carbon dioxide emission reduction rates of the renovated buildings were predicted. The results reveal that, in the building performance diagnostic, the wind speed clearly rise at the building’s corner, particularly on the outdoor level and the top floor; meanwhile, the inside lighting is insufficient, and there is a glare hazard adjacent to the window. The performance of the target building has unquestionably increased following the repair of 12 measures, including the bay windows, exterior walls, and solar energy. The influence of strong winds in winter and tranquil winds in summer greatly decreased in terms of the wind environment. In the light environment, indoor lighting is more uniform; the range of (Universal Design index) UDI100–2000 increased from 9.2% to 32.7%; and UDI2000, which may cause glare, decreased by 28.4%. Energy savings and pollution reduction rates were as high as 19.8% and 38.8%, respectively, due to the installation of solar photovoltaic panels. Based on all the measures, the overall energy saving rate of the target building was 63.8%, and the CO 2 emission reduction rate was 90.3%.

Suggested Citation

  • Ying Liu & Depeng Chen & Jinxian Wang & Mingfeng Dai, 2023. "Energy-Saving and Ecological Renovation of Existing Urban Buildings in Severe Cold Areas: A Case Study," Sustainability, MDPI, vol. 15(17), pages 1-13, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:12985-:d:1227581
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    References listed on IDEAS

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    1. Nataša Šuman & Mojca Marinič & Milan Kuhta, 2020. "A Methodological Framework for Sustainable Office Building Renovation Using Green Building Rating Systems and Cost-Benefit Analysis," Sustainability, MDPI, vol. 12(15), pages 1-21, July.
    2. Margarita-Niki Assimakopoulos & Dimitra Papadaki & Francesco Tariello & Giuseppe Peter Vanoli, 2020. "A Holistic Approach for Energy Renovation of the Town Hall Building in a Typical Small City of Southern Italy," Sustainability, MDPI, vol. 12(18), pages 1-36, September.
    3. Mingshun Zhang & Xuan Ge & Ya Zhao & Chun Xia-Bauer, 2019. "Creating Statistics for China’s Building Energy Consumption Using an Adapted Energy Balance Sheet," Energies, MDPI, vol. 12(22), pages 1-15, November.
    4. Xu, Wei & Liu, Changping & Li, Angui & Li, Ji & Qiao, Biao, 2020. "Feasibility and performance study on hybrid air source heat pump system for ultra-low energy building in severe cold region of China," Renewable Energy, Elsevier, vol. 146(C), pages 2124-2133.
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