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Projected global climate change is expected to significantly affect environmental conditions, characterized by elevated ambient temperatures and increased solar radiation. These shifts are expected to result in higher cooling energy demands for buildings while reducing the requirements for space heating. Hence, it is imperative that building skins adapt to the changing climate and sustainability needs of the future. Emerging materials such as mycelium-bound composites (MBC) show promise as a sustainable alternative to conventional building materials. This study aims to evaluate the performance of MBC as an internal thermal insulation material in residential buildings compared to traditional insulation materials. A case study was conducted on a representative residential building in New Delhi, India, in a composite climate zone. A digital model of the selected building was created in DesignBuilder (version 7.3.1.003), integrated with EnergyPlus (version 9.4), to perform energy modelling for different external wall envelope systems, including autoclaved aerated concrete (AAC) blocks, dense concrete blocks, fly ash bricks, and conventional burnt clay bricks. MBC was evaluated as an internal thermal insulation in a residential building alongside expanded polystyrene (EPS), mineral wool, sawdust, and rice husk. Cooling and heating demands were analyzed for thirty-eight configurations of external walling systems and insulation types. The results suggest that cooling and heating demand could change within the ranges of +10.7% to −21.8% and + 7.9% to −19.0%, respectively, for all configurations compared with the W1 configuration, i.e., a conventional burnt clay brick wall without insulation. The W23 configuration, i.e., the mycelium composite insulation placed on the interior side of the AAC block wall, performed better in energy efficiency than the W29 configuration, i.e., the mycelium composite insulation sandwiched between AAC blocks. The findings suggest that design strategies for bio-based insulation materials must consider optimal positioning within wall systems to maximise their potential.

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Climate-Resilient Building Envelopes: Comparative Energy Performance of Mycelium-Bound Composites (MBC) and Conventional Insulation Materials

  • 会议论文

  • 发表日期：

    2026年

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  • Ketan Sharma,
  • Ann Francis,
  • Anastasia Globa

摘要

Projected global climate change is expected to significantly affect environmental conditions, characterized by elevated ambient temperatures and increased solar radiation. These shifts are expected to result in higher cooling energy demands for buildings while reducing the requirements for space heating. Hence, it is imperative that building skins adapt to the changing climate and sustainability needs of the future. Emerging materials such as mycelium-bound composites (MBC) show promise as a sustainable alternative to conventional building materials. This study aims to evaluate the performance of MBC as an internal thermal insulation material in residential buildings compared to traditional insulation materials. A case study was conducted on a representative residential building in New Delhi, India, in a composite climate zone. A digital model of the selected building was created in DesignBuilder (version 7.3.1.003), integrated with EnergyPlus (version 9.4), to perform energy modelling for different external wall envelope systems, including autoclaved aerated concrete (AAC) blocks, dense concrete blocks, fly ash bricks, and conventional burnt clay bricks. MBC was evaluated as an internal thermal insulation in a residential building alongside expanded polystyrene (EPS), mineral wool, sawdust, and rice husk. Cooling and heating demands were analyzed for thirty-eight configurations of external walling systems and insulation types. The results suggest that cooling and heating demand could change within the ranges of +10.7% to −21.8% and + 7.9% to −19.0%, respectively, for all configurations compared with the W1 configuration, i.e., a conventional burnt clay brick wall without insulation. The W23 configuration, i.e., the mycelium composite insulation placed on the interior side of the AAC block wall, performed better in energy efficiency than the W29 configuration, i.e., the mycelium composite insulation sandwiched between AAC blocks. The findings suggest that design strategies for bio-based insulation materials must consider optimal positioning within wall systems to maximise their potential.