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Dynamic optimization of multi-retrofit building envelope for enhanced energy performance with a case study in hot Indian climate

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  • Saikia, Pranaynil
  • Pancholi, Marmik
  • Sood, Divyanshu
  • Rakshit, Dibakar

Abstract

When multiple thermal retrofits are to be installed in a building envelope for improving its energy performance, several questions arise such as “what should be the thickness of retrofits and where they should be placed within the wall/roof”, “which retrofit should be installed towards the exterior and which one should be installed towards the interior of the envelope”. Such judgements are made in contemporary studies by comparing limited predefined configurations where either the thickness or the location of retrofit assumes only a few discrete values within the envelope. The novel approach proposed in this study utilizes spatial discretization of structural layers in a composite envelope for two fold benefit. A new version of Genetic Algorithm (GA) is developed for this purpose by modifying its key operational stages. The GA is implemented in a practical scenario to optimally configure a multi-retrofit envelope (carrying phase change material and thermal insulator) of a common residential building in hot climate of India. Analysis of a single housing unit demonstrates that up to 33.5% of heat gain reduction and 9.2 kWh/day of electricity saving are achievable with improved envelope design.

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  • Saikia, Pranaynil & Pancholi, Marmik & Sood, Divyanshu & Rakshit, Dibakar, 2020. "Dynamic optimization of multi-retrofit building envelope for enhanced energy performance with a case study in hot Indian climate," Energy, Elsevier, vol. 197(C).
    • Handle: RePEc:eee:energy:v:197:y:2020:i:c:s0360544220303704
    DOI: 10.1016/j.energy.2020.117263
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    2. Sultan Kobeyev & Serik Tokbolat & Serdar Durdyev, 2021. "Design and Energy Performance Analysis of a Hotel Building in a Hot and Dry Climate: A Case Study," Energies, MDPI, vol. 14(17), pages 1-18, September.
    3. Jesús Araúz & Dafni Mora & Miguel Chen Austin, 2022. "Assessment of Different Envelope Configurations via Optimization Analysis and Thermal Performance Indicators: A Case Study in a Tropical Climate," Sustainability, MDPI, vol. 14(4), pages 1-20, February.
    4. Qu, Ke & Chen, Xiangjie & Wang, Yixin & Calautit, John & Riffat, Saffa & Cui, Xin, 2021. "Comprehensive energy, economic and thermal comfort assessments for the passive energy retrofit of historical buildings - A case study of a late nineteenth-century Victorian house renovation in the UK," Energy, Elsevier, vol. 220(C).
    5. Pourghorban, Arash & Kari, Behrouz Mohammad & Asoodeh, Hedyeh, 2022. "Holistic survey of reflective insulation systems (RISs) in vertical applications in building envelopes under various climatic conditions," Energy, Elsevier, vol. 242(C).
    6. Yuang Guo & Dewancker Bart, 2020. "Optimization of Design Parameters for Office Buildings with Climatic Adaptability Based on Energy Demand and Thermal Comfort," Sustainability, MDPI, vol. 12(9), pages 1-23, April.

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