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A review of benefits and limitations of static and switchable cool roof systems

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  • Testa, Jenna
  • Krarti, Moncef

Abstract

In recent years there has been a widespread adoption of high reflectance (cool) roofing materials in hot climates to reduce a building's cooling load and energy use. While a cool roof can reduce the building's cooling load during warm months, it may regrettably increase the heating load in cool months thus reducing their overall effectiveness. One potential solution to preserving high cooling load savings without accruing a large heating load penalty is to implement a switchable roof reflectance technology; allowing a low reflectance roof during the heating season and a high reflectance roof during the cooling season. This paper organizes and summarizes the literature on cool roofs and switchable roofing materials as a tool for energy savings in buildings. It presents a review of material properties and advancements, energy savings and penalties, current codes, additional benefits and limitations, and recommendations for future research. Finally, the paper summarizes comparative analysis results of the energy performance for both static and switchable cool roofs.

Suggested Citation

  • Testa, Jenna & Krarti, Moncef, 2017. "A review of benefits and limitations of static and switchable cool roof systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 451-460.
    • Handle: RePEc:eee:rensus:v:77:y:2017:i:c:p:451-460
    DOI: 10.1016/j.rser.2017.04.030
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    References listed on IDEAS

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    1. Gao, Yafeng & Xu, Jiangmin & Yang, Shichao & Tang, Xiaomin & Zhou, Quan & Ge, Jing & Xu, Tengfang & Levinson, Ronnen, 2014. "Cool roofs in China: Policy review, building simulations, and proof-of-concept experiments," Energy Policy, Elsevier, vol. 74(C), pages 190-214.
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    2. Dehwah, Ammar H.A. & Krarti, Moncef, 2021. "Performance of precooling strategies using switchable insulation systems for commercial buildings," Applied Energy, Elsevier, vol. 303(C).
    3. Jiaming Guo & Yanhua Liu & Enli Lü, 2019. "Numerical Simulation of Temperature Decrease in Greenhouses with Summer Water-Sprinkling Roof," Energies, MDPI, vol. 12(12), pages 1-15, June.
    4. Eva Crespo Sánchez & David Masip Vilà, 2022. "Thermochromic Materials as Passive Roof Technology: Their Impact on Building Energy Performance," Energies, MDPI, vol. 15(6), pages 1-25, March.
    5. Dehwah, Ammar H.A. & Krarti, Moncef, 2021. "Energy performance of integrated adaptive envelope systems for residential buildings," Energy, Elsevier, vol. 233(C).
    6. Alhazmi, Mansour & Sailor, David J. & Levinson, Ronnen, 2023. "A review of challenges, barriers, and opportunities for large-scale deployment of cool surfaces," Energy Policy, Elsevier, vol. 180(C).
    7. Yating Zhang & Bilal M. Ayyub, 2020. "Projecting heat waves temporally and spatially for local adaptations in a changing climate: Washington D.C. as a case study," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 103(1), pages 731-750, August.
    8. Francesco Baldi & Enrico Genova & Alessandra Gugliandolo & Maria-Anna Segreto, 2022. "Mapping the Potential of High-Reflective Roof Coverings in Residential Buildings in Italy," Sustainability, MDPI, vol. 14(9), pages 1-22, April.
    9. Farooq, Abdul Samad & Zhang, Peng & Gao, Yongfeng & Gulfam, Raza, 2021. "Emerging radiative materials and prospective applications of radiative sky cooling - A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 144(C).
    10. Butt, Afaq A. & de Vries, Samuel B. & Loonen, Roel C.G.M. & Hensen, Jan L.M. & Stuiver, Anthonie & van den Ham, Jonathan E.J. & Erich, Bart S.J.F., 2021. "Investigating the energy saving potential of thermochromic coatings on building envelopes," Applied Energy, Elsevier, vol. 291(C).
    11. Chen, Jianheng & Lu, Lin & Gong, Quan, 2023. "Techno-economic and environmental evaluation on radiative sky cooling-based novel passive envelope strategies to achieve building sustainability and carbon neutrality," Applied Energy, Elsevier, vol. 349(C).
    12. Chi, Fang'ai & Liu, Yang & Yan, Jianxiong, 2021. "Integration of Radiative-based air temperature regulating system into residential building for energy saving," Applied Energy, Elsevier, vol. 301(C).

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