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Simulation-Based Study on the Effect of Green Roofs on Summer Energy Performance in Melbourne

Author

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  • Elmira Jamei

    (College of Sport, Health, and Engineering, Victoria University, Melbourne, VIC 3011, Australia
    Institute of Sustainable Industries and Liveable Cities, Victoria University, Melbourne, VIC 3011, Australia)

  • Gokul Thirunavukkarasu

    (Siemens-Swinburne Energy Transition Hub, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia)

  • Majed Abuseif

    (School of Law and Society, University of the Sunshine Coast, Sunshine Coast, QLD 4556, Australia
    Green Infrastructure Research Labs (GIRLS), Cities Research Institute, Griffith University, Gold Coast, QLD 4215, Australia)

  • Mehdi Seyedmahmoudian

    (Siemens-Swinburne Energy Transition Hub, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia)

  • Saad Mekhilef

    (Siemens-Swinburne Energy Transition Hub, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia)

  • Alex Stojcevski

    (Siemens-Swinburne Energy Transition Hub, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Melbourne, VIC 3122, Australia)

  • Hing-Wah Chau

    (College of Sport, Health, and Engineering, Victoria University, Melbourne, VIC 3011, Australia
    Institute of Sustainable Industries and Liveable Cities, Victoria University, Melbourne, VIC 3011, Australia)

Abstract

Green roofs are increasingly recognised as a crucial urban solution, addressing climate change, enhancing energy efficiency, and promoting sustainable architecture in densely populated areas. In this manuscript, the research study delves into the influence of green roofs on energy consumption, focusing on the Treasury Place building in Melbourne, Australia. The utilisation of DesignBuilder and EnergyPlus simulations was explored. Various green roof parameters such as the Leaf Area Index (LAI), plant height, soil moisture, and tree coverage were optimised and compared against base case scenarios. The key findings indicate an optimal LAI of 1.08 for maximum energy savings, with diminishing returns beyond an LAI of 2.5. The soil moisture content was most effective, around 50%, while a plant height of approximately 0.33 m optimised energy reduction. The introduction of 50% canopy tree coverage provided temperature regulation, but increased soil moisture due to trees and their influence on wind flow had an adverse energy impact. These results emphasise the necessity for precise green roof representation and parameter optimisation for maximum energy efficiency. This research offers essential insights for those in urban planning and building design, endorsing green roofs as a pivotal solution for sustainable urban environments.

Suggested Citation

  • Elmira Jamei & Gokul Thirunavukkarasu & Majed Abuseif & Mehdi Seyedmahmoudian & Saad Mekhilef & Alex Stojcevski & Hing-Wah Chau, 2023. "Simulation-Based Study on the Effect of Green Roofs on Summer Energy Performance in Melbourne," Land, MDPI, vol. 12(12), pages 1-19, November.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:12:p:2105-:d:1287812
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    References listed on IDEAS

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    1. Aude Lemonsu & Raphaëlle Kounkou-Arnaud & Julien Desplat & Jean-Luc Salagnac & Valéry Masson, 2013. "Evolution of the Parisian urban climate under a global changing climate," Climatic Change, Springer, vol. 116(3), pages 679-692, February.
    2. Ejaz Qureshi, M. & Hanjra, Munir A. & Ward, John, 2013. "Impact of water scarcity in Australia on global food security in an era of climate change," Food Policy, Elsevier, vol. 38(C), pages 136-145.
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    Cited by:

    1. Korneliusz Pylak & Jakub Pizoń & Ewa Łazuka, 2024. "Evolution of Regional Innovation Strategies Towards the Transition to Green Energy in Europe 2014–2027," Energies, MDPI, vol. 17(22), pages 1-25, November.
    2. Maryam Norouzi & Hing-Wah Chau & Elmira Jamei, 2024. "Design and Site-Related Factors Impacting the Cooling Performance of Urban Parks in Different Climate Zones: A Systematic Review," Land, MDPI, vol. 13(12), pages 1-42, December.

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