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Economic potential analysis of photovoltaic integrated shading strategies on commercial building facades in urban blocks: A case study of Colombo, Sri Lanka

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  • Mendis, Thushini
  • Huang, Zhaojian
  • Xu, Shen
  • Zhang, Weirong

Abstract

Building integrated photovoltaics (BIPV) are becoming a viable solution for clean on-site energy production and utilisation. In tropical climates, although rooftops are ideal for photovoltaic (PV) module integration, the available area may be insufficient to meet building energy demand due to the increase in high-rise urban buildings, causing a requirement for the utilisation of facades. However, the high solar elevation angle means that facades are unfavourably oriented towards receiving incident irradiation. Also, the issue exists of high solar heat gains into built spaces. This paper evaluates the utilisation of horizontally inclined PV integrated shading strategies to combat these issues based on the urban context of Colombo, Sri Lanka. Various strategies are evaluated in terms of their inclination angles and the distance between installations, and urban blocks in Colombo are analysed in terms of how they affect the solar potential in the urban canyon. The results are analysed in terms of economic potential to determine the optimised installation strategies based on urban block type. The results suggest that installations inclined at 30° at a distance-to-length ratio of 4 provide the greatest economic viability in this context.

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  • Mendis, Thushini & Huang, Zhaojian & Xu, Shen & Zhang, Weirong, 2020. "Economic potential analysis of photovoltaic integrated shading strategies on commercial building facades in urban blocks: A case study of Colombo, Sri Lanka," Energy, Elsevier, vol. 194(C).
    • Handle: RePEc:eee:energy:v:194:y:2020:i:c:s0360544220300153
    DOI: 10.1016/j.energy.2020.116908
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    6. Sredenšek, Klemen & Štumberger, Bojan & Hadžiselimović, Miralem & Mavsar, Primož & Seme, Sebastijan, 2022. "Physical, geographical, technical, and economic potential for the optimal configuration of photovoltaic systems using a digital surface model and optimization method," Energy, Elsevier, vol. 242(C).
    7. Ren, Haoshan & Sun, Yongjun & Norman Tse, Chung Fai & Fan, Cheng, 2023. "Optimal packing and planning for large-scale distributed rooftop photovoltaic systems under complex shading effects and rooftop availabilities," Energy, Elsevier, vol. 274(C).
    8. Barone, Giovanni & Buonomano, Annamaria & Forzano, Cesare & Giuzio, Giovanni Francesco & Palombo, Adolfo, 2020. "Passive and active performance assessment of building integrated hybrid solar photovoltaic/thermal collector prototypes: Energy, comfort, and economic analyses," Energy, Elsevier, vol. 209(C).
    9. Firoozzadeh, Mohammad & Shiravi, Amir Hossein & Lotfi, Marzieh & Aidarova, Saule & Sharipova, Altynay, 2021. "Optimum concentration of carbon black aqueous nanofluid as coolant of photovoltaic modules: A case study," Energy, Elsevier, vol. 225(C).
    10. Shi, Zhongming & Fonseca, Jimeno A. & Schlueter, Arno, 2021. "A parametric method using vernacular urban block typologies for investigating interactions between solar energy use and urban design," Renewable Energy, Elsevier, vol. 165(P1), pages 823-841.

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