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A numerical and experimental investigation of the effectiveness of green roofs in tropical environments: The case study of Mauritius in mid and late winter

Author

Listed:
  • Mungur, Maheshsingh
  • Poorun, Yashna
  • Juggurnath, Diksha
  • Ruhomally, Yusra Bibi
  • Rughooputh, Reshma
  • Dauhoo, Muhammad Zaid
  • Khoodaruth, Abdel
  • Shamachurn, Heman
  • Gooroochurn, Mahendra
  • Boodia, Navindra
  • Chooneea, Mahindra
  • Facknath, Sunita

Abstract

The present work is a preliminary assessment of the performance of green roof at Reduit in Mauritius, located at latitude 20.23∘S and longitude 57.49∘E (Indian Ocean), which is influenced by a tropical humid climate. The efficiency of the green roof is gauged by evaluating its effect on indoor temperature fluctuations, conductive heat fluxes and the daily peak indoor temperature. On site measurements of weather data and indoor temperature are collected round the clock from July 11, 2017 to October 08, 2017. It is found that green roof increases the thermal mass of the experimental cells thereby reducing the fluctuations in indoor temperature. The conductive heat flux variation is significantly low in the case of the green roof. The green roof reduces the daily peak indoor temperature, which is attenuated significantly as compared to a conventional roof. A one dimensional mathematical model is also proposed in order to simulate the evolution of the heat and moisture transfer in a porous multilayer material. The model is validated using the measured data.

Suggested Citation

  • Mungur, Maheshsingh & Poorun, Yashna & Juggurnath, Diksha & Ruhomally, Yusra Bibi & Rughooputh, Reshma & Dauhoo, Muhammad Zaid & Khoodaruth, Abdel & Shamachurn, Heman & Gooroochurn, Mahendra & Boodia,, 2020. "A numerical and experimental investigation of the effectiveness of green roofs in tropical environments: The case study of Mauritius in mid and late winter," Energy, Elsevier, vol. 202(C).
    • Handle: RePEc:eee:energy:v:202:y:2020:i:c:s0360544220307155
    DOI: 10.1016/j.energy.2020.117608
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    References listed on IDEAS

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    1. Badurally Adam, N.R. & Elahee, M.K. & Dauhoo, M.Z., 2011. "Forecasting of peak electricity demand in Mauritius using the non-homogeneous Gompertz diffusion process," Energy, Elsevier, vol. 36(12), pages 6763-6769.
    2. Musa Akther & Jianxun He & Angus Chu & Jian Huang & Bert Van Duin, 2018. "A Review of Green Roof Applications for Managing Urban Stormwater in Different Climatic Zones," Sustainability, MDPI, vol. 10(8), pages 1-28, August.
    3. Yu Zhang & Lei Zhang & Luyao Ma & Qinglin Meng & Peng Ren, 2019. "Cooling Benefits of an Extensive Green Roof and Sensitivity Analysis of Its Parameters in Subtropical Areas," Energies, MDPI, vol. 12(22), pages 1-22, November.
    4. Jim, C.Y., 2014. "Air-conditioning energy consumption due to green roofs with different building thermal insulation," Applied Energy, Elsevier, vol. 128(C), pages 49-59.
    5. Ascione, Fabrizio & Bianco, Nicola & de’ Rossi, Filippo & Turni, Gianluca & Vanoli, Giuseppe Peter, 2013. "Green roofs in European climates. Are effective solutions for the energy savings in air-conditioning?," Applied Energy, Elsevier, vol. 104(C), pages 845-859.
    6. Anna Baryła & Tomasz Gnatowski & Agnieszka Karczmarczyk & Jan Szatyłowicz, 2019. "Changes in Temperature and Moisture Content of an Extensive-Type Green Roof," Sustainability, MDPI, vol. 11(9), pages 1-18, April.
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    1. Suzaini Zaid & Laila Medina Zaid & Masoud Esfandiari & Zahiruddin Fitri Abu Hasan, 2022. "Green roof maintenance for non-residential buildings in tropical climate: case study of Kuala Lumpur," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(2), pages 2471-2496, February.

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