Measurement of Badgirs
Badgir, Siraf, 18th century
This tower is 14.83m high. The room located under Badgir is 12.24m long and 2.80m wide, with a surface area of 34.27m2 and a height under ceiling of 3.84m. The room has a door and two small windows giving onto other rooms.
The house is situated on a hill, nestled between the mountains and the sea.
Measure wind speed and angle to optimize Badgir performance and design
We conducted our analyses under various experimental conditions, including different temperatures and wind conditions. By considering these parameters, we were able to obtain more precise and representative results of the phenomena studied in different situations. In particular, we measured the speed and angle of the dominant wind direction, which allowed us to better understand the behavior of airflow around the Badgir and its effectiveness in capturing and channeling wind into the building. These measurements are essential for evaluating the performance of Badgirs and optimizing their design for maximum efficiency and energy savings.
Measuring the volume air of incoming and outgoing air duct
The main room with a four sided Badgir.
The behaviour of wind under the badgir
When the duct is in extraction mode, the piece of red paper is drawn towards the outside, while in the supply mode, the paper is pushed towards the inside of the room. This simple experiment demonstrates the basic principle of airflow direction and how it is affected by the operation mode of the duct. By controlling the direction of airflow, it is possible to regulate the temperature and humidity levels within a building and improve indoor air quality.