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Optimizing sustainable retrofit strategies for a heritage complex through multiobjective optimization and Space Syntax analysis: a Suzhou case study

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  • Qi Xu
  • Shihao Zhang
  • Saffa Riffat

Abstract

This study addresses the sustainable retrofitting of heritage buildings, balancing modern efficiency with heritage preservation. Using a Suzhou case study, this research integrates multiobjective optimization and Space Syntax analysis to tailor sustainable retrofit strategies for a heritage complex. The framework balances energy efficiency, historical value, and architectural integrity by customizing measures for individual buildings. The proposed solution reduces energy consumption by up to 37% with lower negative historic impacts and initial costs compared with solutions proposed by conventional optimization methods. These results demonstrate that advanced optimization combined with spatial analysis provides a robust, quantitative basis for harmonizing energy performance with heritage conservation.

Suggested Citation

  • Qi Xu & Shihao Zhang & Saffa Riffat, 2025. "Optimizing sustainable retrofit strategies for a heritage complex through multiobjective optimization and Space Syntax analysis: a Suzhou case study," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 20, pages 1242-1255.
    • Handle: RePEc:oup:ijlctc:v:20:y:2025:i::p:1242-1255.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctaf078
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