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Assessment of green roof benefits on buildings’ energy-saving by cooling outdoor spaces in different urban densities in arid cities

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  • Aboelata, Amir

Abstract

Over the last twenty years, Cairo experienced a great rise in temperature by 4–5 K due to the high urban density and lack of vegetation. These factors led to increased air conditioning and electricity usage. This study therefore seeks to evaluate the effect of green roofs on reducing outdoor air temperature and lowering buildings’ cooling energy demand in different urban densities. Group A consisted of the same aspect ratio areas H/W = 1 and different building heights of 12 m, 18 m, and 30 m. Group B contained areas of the same building heights (12 m) and different aspect ratios of H/W = 1, 2, and 3. ENVI-met v.4.4.4 was used to study each area by simulating the reference case and two scenarios: extensive and intensive green roofs. Then, a DesignBuilder model was used to calculate the buildings’ energy demand. This study found that intensive green roofs achieve the maximum reduction in air temperature and buildings’ cooling energy. However, the economic aspect favors using extensive green roofs as they were able to reduce air temperature and buildings’ cooling energy in Group A by 0.1–0.5 K and 1.3–3.2% and in Group B by 0.1–1.7 K and 3.2–13.3%.

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  • Aboelata, Amir, 2021. "Assessment of green roof benefits on buildings’ energy-saving by cooling outdoor spaces in different urban densities in arid cities," Energy, Elsevier, vol. 219(C).
    • Handle: RePEc:eee:energy:v:219:y:2021:i:c:s0360544220326219
    DOI: 10.1016/j.energy.2020.119514
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    1. Jaffal, Issa & Ouldboukhitine, Salah-Eddine & Belarbi, Rafik, 2012. "A comprehensive study of the impact of green roofs on building energy performance," Renewable Energy, Elsevier, vol. 43(C), pages 157-164.
    2. Levinson, Ronnen & Akbari, Hashem & Konopacki, Steve & Bretz, Sarah, 2005. "Inclusion of cool roofs in nonresidential Title 24 prescriptive requirements," Energy Policy, Elsevier, vol. 33(2), pages 151-170, January.
    3. Elisa Peñalvo-López & Javier Cárcel-Carrasco & David Alfonso-Solar & Iván Valencia-Salazar & Elias Hurtado-Pérez, 2020. "Study of the Improvement on Energy Efficiency for a Building in the Mediterranean Area by the Installation of a Green Roof System," Energies, MDPI, vol. 13(5), pages 1-14, March.
    4. Santamouris, M. & Pavlou, C. & Doukas, P. & Mihalakakou, G. & Synnefa, A. & Hatzibiros, A. & Patargias, P., 2007. "Investigating and analysing the energy and environmental performance of an experimental green roof system installed in a nursery school building in Athens, Greece," Energy, Elsevier, vol. 32(9), pages 1781-1788.
    5. Ouldboukhitine, Salah-Eddine & Belarbi, Rafik & Sailor, David J., 2014. "Experimental and numerical investigation of urban street canyons to evaluate the impact of green roof inside and outside buildings," Applied Energy, Elsevier, vol. 114(C), pages 273-282.
    6. Lilliana L.H. Peng & C. Y. Jim, 2013. "Green-Roof Effects on Neighborhood Microclimate and Human Thermal Sensation," Energies, MDPI, vol. 6(2), pages 1-21, January.
    7. Refahi, Amir Hossein & Talkhabi, Hossein, 2015. "Investigating the effective factors on the reduction of energy consumption in residential buildings with green roofs," Renewable Energy, Elsevier, vol. 80(C), pages 595-603.
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    Cited by:

    1. Hai-Ying Liu & Marion Jay & Xianwen Chen, 2021. "The Role of Nature-Based Solutions for Improving Environmental Quality, Health and Well-Being," Sustainability, MDPI, vol. 13(19), pages 1-56, October.
    2. Bevilacqua, Piero, 2021. "The effectiveness of green roofs in reducing building energy consumptions across different climates. A summary of literature results," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).
    3. Battista, Gabriele & de Lieto Vollaro, Emanuele & Ocłoń, Paweł & Vallati, Andrea, 2021. "Effect of mutual radiative exchange between the surfaces of a street canyon on the building thermal energy demand," Energy, Elsevier, vol. 226(C).
    4. Gianfranco Rizzo & Laura Cirrincione & Maria La Gennusa & Giorgia Peri & Gianluca Scaccianoce, 2023. "Green Roofs’ End of Life: A Literature Review," Energies, MDPI, vol. 16(2), pages 1-16, January.
    5. Mihalakakou, Giouli & Souliotis, Manolis & Papadaki, Maria & Menounou, Penelope & Dimopoulos, Panayotis & Kolokotsa, Dionysia & Paravantis, John A. & Tsangrassoulis, Aris & Panaras, Giorgos & Giannako, 2023. "Green roofs as a nature-based solution for improving urban sustainability: Progress and perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 180(C).
    6. He, Q. & Tapia, F. & Reith, A., 2023. "Quantifying the influence of nature-based solutions on building cooling and heating energy demand: A climate specific review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 186(C).
    7. Dong, Xin & He, Bao-Jie, 2023. "A standardized assessment framework for green roof decarbonization: A review of embodied carbon, carbon sequestration, bioenergy supply, and operational carbon scenarios," Renewable and Sustainable Energy Reviews, Elsevier, vol. 182(C).

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