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On the Energy Performance of an Innovative Green Roof in the Mediterranean Climate

Author

Listed:
  • Luca Evangelisti

    (Department of Engineering, Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Claudia Guattari

    (Department of Engineering, Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Gianluca Grazieschi

    (Department of Engineering, Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Marta Roncone

    (Department of Engineering, Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

  • Francesco Asdrubali

    (Department of Engineering, Roma TRE University, Via Vito Volterra 62, 00146 Rome, Italy)

Abstract

Green roofs have a thermal insulating effect known since ancient times. In the building sector, green roofs represent a sustainable passive solution to obtain energy savings, both during winter and summer. Moreover, they are a natural barrier against noise pollution, reducing sound reflections, and they contribute to clean air and biodiversity in urban areas. In this research, a roof-lawn system was studied through a long experimental campaign. Heat-flow meters, air and surface temperature sensors were used in two buildings characterized by different surrounding conditions, geometries and orientations. In both case studies, the thermal behaviors of the roof-lawn system were compared with the conventional roofs. In addition, a dynamic simulation model was created in order to quantify the effect of this green system on the heating and cooling energy demands. The roof-lawn showed a high thermal inertia, with no overheating during summer, and a high insulating capacity, involving energy savings during winter, and consequently better indoor thermal conditions.

Suggested Citation

  • Luca Evangelisti & Claudia Guattari & Gianluca Grazieschi & Marta Roncone & Francesco Asdrubali, 2020. "On the Energy Performance of an Innovative Green Roof in the Mediterranean Climate," Energies, MDPI, vol. 13(19), pages 1-18, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5163-:d:423478
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    References listed on IDEAS

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    1. Patrizia Piro & Marco Carbone & Marilena De Simone & Mario Maiolo & Piero Bevilacqua & Natale Arcuri, 2018. "Energy and Hydraulic Performance of a Vegetated Roof in Sub-Mediterranean Climate," Sustainability, MDPI, vol. 10(10), pages 1-13, September.
    2. 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.
    3. 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.
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    Cited by:

    1. Paola Marrone & Francesco Asdrubali & Daniela Venanzi & Federico Orsini & Luca Evangelisti & Claudia Guattari & Roberto De Lieto Vollaro & Lucia Fontana & Gianluca Grazieschi & Paolo Matteucci & Marta, 2021. "On the Retrofit of Existing Buildings with Aerogel Panels: Energy, Environmental and Economic Issues," Energies, MDPI, vol. 14(5), pages 1-22, February.
    2. 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).

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