Green roof energy performance in different climate zones: a simulation study

Kulumkanov, Nursat; Nadeem, Abid; Tokbolat, Serik

Abstract

Green roofs are widely used as a passive building design technique to decrease the cooling demand in buildings. The vegetation uses the energy of the surroundings during the evapotranspiration process, leading to a temperature decrease in air. This paper investigates the effectiveness of green roofs in 45 cities in different climate zones. The simulation of the energy performance of buildings is performed using DesignBuilder software, which integrates the EnergyPlus engine. The results show that green roofs effectively reduce the cooling load but increase heating energy consumption. The highest performance in total energy savings was in the arid zone with savings ranging from 3.2% to 9.1%, despite having a high heating demand. Tropic and temperate zones show relatively lower results, which vary from 1.4% to 4.1% and -0.2% to 4.2%. The cold zone shows the worst result, ranging by around 1%. Thus, green roofs show better performance in cities with high-temperature ranges, direct radiation, and humidity level.

Citation

Kulumkanov, N., Nadeem, A., & Tokbolat, S. Green roof energy performance in different climate zones: a simulation study. Presented at CISBAT International Conference 2023, Lausanne, Switzerland

• Presentation Conference Type: Conference Paper (published)
• Conference Name: CISBAT International Conference 2023
• Acceptance Date: Jul 7, 2023
• Publication Date: Dec 1, 2023
• Deposit Date: Dec 4, 2023
• Publicly Available Date: Dec 5, 2023
• Journal: Journal of Physics: Conference Series
• Print ISSN: 1742-6588
• Electronic ISSN: 1742-6596
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 2600
• Issue: 9
• Article Number: 092027
• DOI: https://doi.org/10.1088/1742-6596/2600/9/092027
• Public URL: https://nottingham-repository.worktribe.com/output/28133550
• Publisher URL: https://iopscience.iop.org/article/10.1088/1742-6596/2600/9/092027
• Additional Information: Article Title: Green roof energy performance in different climate zones: a simulation study; Journal Title: Journal of Physics: Conference Series; Article Type: paper; Copyright Information: Published under licence by IOP Publishing Ltd; Date Received: ; Date Accepted: ; Online publication date: