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Sustainable urban energy: Development of a mesoscale assessment model for solar reflective roof technologies

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  • Jo, J.H.
  • Carlson, J.
  • Golden, J.S.
  • Bryan, H.

Abstract

Buildings and other engineered structures that form cities are responsible for a significant portion of the global and local impacts of climate change. Consequently, the incorporation of building design strategies and materials such as the use of reflective roof materials, or 'cool' roofs, are being widely investigated. However, although their benefits for individual buildings have been studied, as yet there is little understanding of the potential benefits of urban scale implementation of such systems. Here we report the development of a new methodology for assessing the potential capacity and benefits of installing reflective roofs in an urbanized area. The new methodology combines remote sensing image data with a building energy computer simulation to quantify the current rooftop reflectivity and predict the potential benefits of albedo improvement. In addition to the direct electricity savings, cool roof systems reduce peak electrical demand in the month of August when the peak demand is at its highest in the case study area. Environmental benefits associated with lowering greenhouse-gas emissions are also substantial. The new methodology allows the calculation of payback periods to assist planners to evaluate the potential economic benefits of the widespread installation of cool roof systems.

Suggested Citation

  • Jo, J.H. & Carlson, J. & Golden, J.S. & Bryan, H., 2010. "Sustainable urban energy: Development of a mesoscale assessment model for solar reflective roof technologies," Energy Policy, Elsevier, vol. 38(12), pages 7951-7959, December.
    • Handle: RePEc:eee:enepol:v:38:y:2010:i:12:p:7951-7959
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    References listed on IDEAS

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    1. 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.
    2. Sailor, D.J & Pavlova, A.A, 2003. "Air conditioning market saturation and long-term response of residential cooling energy demand to climate change," Energy, Elsevier, vol. 28(9), pages 941-951.
    3. Akbari, Hashem & Konopacki, Steven, 2004. "Energy effects of heat-island reduction strategies in Toronto, Canada," Energy, Elsevier, vol. 29(2), pages 191-210.
    4. Akbari, H, 2003. "Measured energy savings from the application of reflective roofs in two small non-residential buildings," Energy, Elsevier, vol. 28(9), pages 953-967.
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    Cited by:

    1. Keirstead, James & Jennings, Mark & Sivakumar, Aruna, 2012. "A review of urban energy system models: Approaches, challenges and opportunities," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(6), pages 3847-3866.
    2. Dhanasingh Sivalinga Vijayan & Eugeniusz Koda & Arvindan Sivasuriyan & Jan Winkler & Parthiban Devarajan & Ramamoorthy Sanjay Kumar & Aleksandra Jakimiuk & Piotr Osinski & Anna Podlasek & Magdalena Da, 2023. "Advancements in Solar Panel Technology in Civil Engineering for Revolutionizing Renewable Energy Solutions—A Review," Energies, MDPI, vol. 16(18), pages 1-33, September.
    3. Fadye Al Fayad & Wahid Maref & Mohamed M. Awad, 2021. "Review of White Roofing Materials and Emerging Economies with Focus on Energy Performance Cost-Benefit, Maintenance, and Consumer Indifference," Sustainability, MDPI, vol. 13(17), pages 1-21, September.
    4. Qin, Yinghong & Zhang, Mingyi & Hiller, Jacob E., 2017. "Theoretical and experimental studies on the daily accumulative heat gain from cool roofs," Energy, Elsevier, vol. 129(C), pages 138-147.

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