Wind Effects on Multi-Storey Solar Chimneys #sciencefather #researcherawards #wind

 

🌞 Multi-Storey Solar Chimneys and the Power of Wind: A Breakthrough Study

When it comes to sustainable building design, solar chimneys are becoming a smart solution for natural ventilation. But there’s one factor that previous studies often overlooked — the influence of external wind. A new study takes a closer look at how wind direction and speed impact the ventilation performance of multi-storey solar chimneys, revealing valuable insights for architects, engineers, and green building enthusiasts.

🌬️ How Wind Affects Multi-Storey Solar Chimneys

The research used simulations to analyze different wind speeds and directions across buildings with varying floor counts. The results? Both wind direction and velocity are critical.

• On the windward side, higher wind speeds increase airflow linearly through inlets on each floor.

• The optimal wind direction occurs when the wind hits windows perpendicularly, maximizing airflow and creating even distribution.

• Higher floors are more sensitive to wind changes, while lower floors remain less affected.

Conversely, placing solar chimneys on the leeward side should be avoided, since wind weakens airflow and reduces performance.

🏢 More Floors, Less Sensitivity

Interestingly, the study found that as the number of floors increases, the sensitivity of solar chimneys to wind decreases. A 2-storey solar chimney proved particularly effective, outperforming single-storey designs by utilizing wind energy more efficiently.

🔧 Design Optimization Tips

To boost ventilation in windy conditions, the study suggests:

• Increasing inlet height to 0.4–0.6 m

• Expanding the cavity gap to 0.7–1.5 m

These adjustments significantly improve ventilation efficiency and balance airflow distribution.

📊 A Predictive Model for Smarter Design

The researchers also developed a theoretical model that accurately predicts solar chimney performance in multi-storey buildings. This model offers practical guidance for architects and engineers aiming to design smarter, greener buildings.

🌍 Why This Matters

By filling a critical research gap, this study demonstrates how external wind plays a vital role in shaping the performance of multi-storey solar chimneys. With these insights, future buildings can achieve better natural ventilation, reduced energy costs, and enhanced sustainability.

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