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Evaluation of energy performance for rotating residential buildings integrated with rooftop PV systems

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  • Krarti, Moncef

Abstract

This paper investigates the energy performance of rotating housing units equipped with revolving rooftop PV panels. The modeling approach for these dynamic buildings are first described and verified. Then, optimal controls for the rotating structures are determined with hourly, daily, and monthly adjustment frequencies. The analysis results indicate that the energy benefits of rotating housing units depend on a wide range of building design specifications, rotation control strategies, rooftop PV mount options, and climatic conditions. However, the rotating housing units equipped with rotating rooftop PV arrays that are independently controlled can achieve significant annual energy demand reductions compared to their static counterparts. Specifically, it is found that rotating housing units can reduce their annual heating and cooling needs by over 21 % when located in Phoenix, AZ. These energy reductions can be even higher for housing units with elongated shapes, multiple floors, and higher window sizes. When designed with rotating rooftop PV arrays, rotating housing units can achieve net-positive energy operation if optimally controlled and located in mild and hot climates.

Suggested Citation

  • Krarti, Moncef, 2025. "Evaluation of energy performance for rotating residential buildings integrated with rooftop PV systems," Applied Energy, Elsevier, vol. 383(C).
    • Handle: RePEc:eee:appene:v:383:y:2025:i:c:s0306261925001370
    DOI: 10.1016/j.apenergy.2025.125407
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