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Assessment of net energy contribution to buildings by rooftop photovoltaic systems in hot-humid climates

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  • Dehwah, Ammar H.A.
  • Asif, Muhammad

Abstract

The study aims to investigate the overall impact of rooftop photovoltaic (PV) systems on the energy performance of residential buildings in hot-humid climates. The study area spans over 100 km2 encompassing 33,000 residential units in the city of Al-Khobar in Saudi Arabia. It examines the restrictions towards the utilizability of building rooftops for PV application. The total building rooftop area and its corresponding PV output at the urban scale level has been estimated with the help of geographic information systems and PV simulation tools. The secondary contribution by PV in terms of heat gain reduction has also been investigated through EnergyPlus simulation engine. It is found that villas and apartment buildings respectively offer 21% and 28% of their rooftops for PV application. Results suggest that solar PV can offset 19% of the electricity demand when 25% of the building roof is utilized, in addition to a cooling load reduction of 2% due to the shading effect of panels. For the total study area, the annual electricity generation potential for tilted and flat application of PV with the existing roofs conditions turns out to be 797 GWh and 757 GWh respectively.

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  • Dehwah, Ammar H.A. & Asif, Muhammad, 2019. "Assessment of net energy contribution to buildings by rooftop photovoltaic systems in hot-humid climates," Renewable Energy, Elsevier, vol. 131(C), pages 1288-1299.
    • Handle: RePEc:eee:renene:v:131:y:2019:i:c:p:1288-1299
    DOI: 10.1016/j.renene.2018.08.031
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    3. Ammar Hamoud Ahmad Dehwah & Muhammad Asif & Ismail Mohammad Budaiwi & Adel Alshibani, 2020. "Techno-Economic Assessment of Rooftop PV Systems in Residential Buildings in Hot–Humid Climates," Sustainability, MDPI, vol. 12(23), pages 1-19, December.
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    7. Ahmed, Ahsan & Nadeem, Talha Bin & Naqvi, Asad A. & Siddiqui, Mubashir Ali & Khan, Muhammad Hamza & Bin Zahid, Muhammad Saad & Ammar, Syed Muhammad, 2022. "Investigation of PV utilizability on university buildings: A case study of Karachi, Pakistan," Renewable Energy, Elsevier, vol. 195(C), pages 238-251.
    8. Salah Ud-Din Khan & Irfan Wazeer & Zeyad Almutairi, 2023. "Comparative Analysis of SAM and RETScreen Tools for the Case Study of 600 kW Solar PV System Installation in Riyadh, Saudi Arabia," Sustainability, MDPI, vol. 15(6), pages 1-23, March.
    9. Ciprian Cristea & Maria Cristea & Dan Doru Micu & Andrei Ceclan & Radu-Adrian Tîrnovan & Florica Mioara Șerban, 2022. "Tridimensional Sustainability and Feasibility Assessment of Grid-Connected Solar Photovoltaic Systems Applied for the Technical University of Cluj-Napoca," Sustainability, MDPI, vol. 14(17), pages 1-23, August.
    10. Sánchez-Aparicio, M. & Martín-Jiménez, J. & Del Pozo, S. & González-González, E. & Lagüela, S., 2021. "Ener3DMap-SolarWeb roofs: A geospatial web-based platform to compute photovoltaic potential," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    11. Mariam Gómez Sánchez & Yunesky Masip Macia & Alejandro Fernández Gil & Carlos Castro & Suleivys M. Nuñez González & Jacqueline Pedrera Yanes, 2020. "A Mathematical Model for the Optimization of Renewable Energy Systems," Mathematics, MDPI, vol. 9(1), pages 1-16, December.
    12. Bhuvad, Sushant Suresh & Udayraj,, 2022. "Investigation of annual performance of a building shaded by rooftop PV panels in different climate zones of India," Renewable Energy, Elsevier, vol. 189(C), pages 1337-1357.

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