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Thermal assessment of extensive green roofs as passive tool for energy savings in buildings

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  • Coma, Julià
  • Pérez, Gabriel
  • Solé, Cristian
  • Castell, Albert
  • Cabeza, Luisa F.

Abstract

Sustainability trends for buildings require new construction systems to foster energy efficiency and environmentally friendly buildings. Green roofs are interesting construction systems because they provide both aesthetic and environmental benefits. This paper continues a long-term research in order to evaluate and improve the thermal behaviour and sustainability of extensive green roofs. Simultaneously this research provides experimental data for specific Mediterranean continental climate conditions. The experiment consists in evaluating the energy consumption and thermal behaviour of three identical house-like cubicles located in Puigverd de Lleida (Spain), where the only difference is the roof construction system. The roof consists of a conventional flat roof with insulation in the reference case, while in the other two cubicles the insulation layer has been replaced by a 9 cm depth extensive green roof (comparing recycled rubber crumbs and pozzolana as drainage layer materials). The electrical energy consumption of a heat pump system was measured for each cubicle during 2012 and part of 2013. Both extensive green roof cubicles show less energy consumption (16.7% and 2.2%, respectively) than the reference one during warm periods, whereas both extensive green roof systems present a higher energy consumption (6.1% and 11.1%, respectively) compared to the reference cubicle during heating periods.

Suggested Citation

  • Coma, Julià & Pérez, Gabriel & Solé, Cristian & Castell, Albert & Cabeza, Luisa F., 2016. "Thermal assessment of extensive green roofs as passive tool for energy savings in buildings," Renewable Energy, Elsevier, vol. 85(C), pages 1106-1115.
    • Handle: RePEc:eee:renene:v:85:y:2016:i:c:p:1106-1115
    DOI: 10.1016/j.renene.2015.07.074
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    References listed on IDEAS

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    1. Pérez, Gabriel & Vila, Anna & Rincón, Lídia & Solé, Cristian & Cabeza, Luisa F., 2012. "Use of rubber crumbs as drainage layer in green roofs as potential energy improvement material," Applied Energy, Elsevier, vol. 97(C), pages 347-354.
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    2. Goudarzi, Hossein & Mostafaeipour, Ali, 2017. "Energy saving evaluation of passive systems for residential buildings in hot and dry regions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P1), pages 432-446.
    3. Fernando Alonso-Marroquin & Ghulam Qadir, 2023. "Synergy between Photovoltaic Panels and Green Roofs," Energies, MDPI, vol. 16(13), pages 1-17, July.
    4. Stefano Cascone, 2019. "Green Roof Design: State of the Art on Technology and Materials," Sustainability, MDPI, vol. 11(11), pages 1-27, May.
    5. Tang, Mingfang & Zheng, Xing, 2019. "Experimental study of the thermal performance of an extensive green roof on sunny summer days," Applied Energy, Elsevier, vol. 242(C), pages 1010-1021.
    6. 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).
    7. Bevilacqua, Piero & Bruno, Roberto & Arcuri, Natale, 2020. "Green roofs in a Mediterranean climate: energy performances based on in-situ experimental data," Renewable Energy, Elsevier, vol. 152(C), pages 1414-1430.
    8. Dimitris Perivoliotis & Iasonas Arvanitis & Anna Tzavali & Vassilios Papakostas & Sophia Kappou & George Andreakos & Angeliki Fotiadi & John A. Paravantis & Manolis Souliotis & Giouli Mihalakakou, 2023. "Sustainable Urban Environment through Green Roofs: A Literature Review with Case Studies," Sustainability, MDPI, vol. 15(22), pages 1-25, November.
    9. Rafael Suárez & Rocío Escandón & Ramón López-Pérez & Ángel Luis León-Rodríguez & Tillmann Klein & Sacha Silvester, 2018. "Impact of Climate Change: Environmental Assessment of Passive Solutions in a Single-Family Home in Southern Spain," Sustainability, MDPI, vol. 10(8), pages 1-17, August.
    10. Grzegorz Mentel & Anna Lewandowska & Justyna Berniak-Woźny & Waldemar Tarczyński, 2023. "Green and Renewable Energy Innovations: A Comprehensive Bibliometric Analysis," Energies, MDPI, vol. 16(3), pages 1-21, February.
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    12. Mostafa Kazemi & Luc Courard & Julien Hubert, 2021. "Heat Transfer Measurement within Green Roof with Incinerated Municipal Solid Waste Aggregates," Sustainability, MDPI, vol. 13(13), pages 1-12, June.
    13. 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.
    14. Ramshani, Mohammad & Li, Xueping & Khojandi, Anahita & Omitaomu, Olufemi, 2020. "An agent-based approach to study the diffusion rate and the effect of policies on joint placement of photovoltaic panels and green roof under climate change uncertainty," Applied Energy, Elsevier, vol. 261(C).
    15. Khalid Almutairi & Elham Manoosi Esfahani & Ali Mostafaeipour & Alibek Issakhov & Chila Kaewpraek & Kuaanan Techato, 2021. "A Novel Policy to Optimize Energy Consumption for Dairy Product Warehouses: A Case Study," Sustainability, MDPI, vol. 13(5), pages 1-28, February.
    16. Ehsan Daneshyar, 2024. "Residential Rooftop Urban Agriculture: Architectural Design Recommendations," Sustainability, MDPI, vol. 16(5), pages 1-34, February.
    17. 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).
    18. Ana Isabel Abellán García & Noelia Cruz Pérez & Juan C. Santamarta, 2021. "Sustainable Urban Drainage Systems in Spain: Analysis of the Research on SUDS Based on Climatology," Sustainability, MDPI, vol. 13(13), pages 1-25, June.
    19. Federica Rosso & Anna Laura Pisello & Veronica Lucia Castaldo & Marco Ferrero & Franco Cotana, 2017. "On Innovative Cool-Colored Materials for Building Envelopes: Balancing the Architectural Appearance and the Thermal-Energy Performance in Historical Districts," Sustainability, MDPI, vol. 9(12), pages 1-13, December.
    20. Fabiani, Claudia & Chiatti, Chiara & Pisello, Anna Laura, 2021. "Development of photoluminescent composites for energy efficiency in smart outdoor lighting applications: An experimental and numerical investigation," Renewable Energy, Elsevier, vol. 172(C), pages 1-15.
    21. Marvuglia, Antonino & Koppelaar, Rembrandt & Rugani, Benedetto, 2020. "The effect of green roofs on the reduction of mortality due to heatwaves: Results from the application of a spatial microsimulation model to four European cities," Ecological Modelling, Elsevier, vol. 438(C).

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