Ghorbani, Nima, Khayyaminejad, Amirhossein, Shabestari, Mahdiyar Khalilzade et Fartaj, Amir.
2025.
« Geometrical investigation of solar chimney with PCM-integrated Trombe wall for enhanced thermal comfort and energy efficiency ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
The global rise in population and energy demand has amplified environmental challenges such as resource depletion, pollution, and escalating fuel prices, underscoring the critical need for sustainable and renewable energy solutions. Sustainable design principles aim to address these challenges by promoting energy-efficient systems and reducing the environmental footprint of buildings. Among these strategies, passive solar systems, such as Solar Chimneys (SC) and Trombe Walls (TW) integrated with Phase Change Materials (PCM), demonstrate significant potential for improving energy efficiency and indoor thermal comfort. This study examines the combined effects of TW-PCM and vertical SC on indoor temperature and heating load in the hot and humid climate of Rio de Janeiro, utilizing DesignBuilder 7.0.2 and EnergyPlus simulation tools. The research evaluates various solar chimney configurations, focusing on height (5 m, 6.5 m, and 8 m), outlet surface area (1.5 m², 2.5 m², and 3.5 m²), and shapes (square, pentagon, and hexagon) to determine optimal geometric configurations for sustainable building performance. Increasing the solar chimney height to 8 m significantly enhanced indoor thermal performance, raising the average indoor temperature to 23.1°C and reducing the average heating load to 169.7 kWh. Peak heating loads of 335 kWh were recorded during the winter month of July, specifically from the 18th to the 21st. Expanding the outlet surface area to 3.5 m² further improved performance, achieving an average indoor temperature of 23.6°C and reducing the average heating load to 118.8 kWh. This configuration extended the mechanical-free operation period by 26 hours compared to the height scenario, highlighting its efficiency in enhancing passive operation. However, the most impactful improvement was achieved by modifying the solar chimney to a 6-sided (hexagonal) configuration. This design increased the average indoor temperature to 24.2°C, reduced the peak heating load to 212.5 kWh, and achieved a significantly lower average heating load of 48.9 kWh. Furthermore, the hexagonal configuration extended the passive operation period by an additional 9 hours compared to the expanded outlet surface area scenario. These findings underscore the importance of geometric optimization in solar chimney design for achieving superior thermal performance, reduced energy consumption, and extended passive operation periods. Incorporating passive solar systems into sustainable building designs provides an effective strategy for addressing energy challenges while enhancing indoor comfort. By optimizing the geometry of solar chimneys, this study contributes valuable insights to the development of innovative, energy-efficient, and environmentally sustainable building solutions.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:11 |
| Dernière modification: | 18 déc. 2025 15:11 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32403 |
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