Impact of Wind – Saftey of System and Surroundings
Higher tilt angle experiences higher impact of wind and more prone to structure failure. On the other hand, a lower impact of wind is seen in lower tilt angles in the range of 10-12 degrees.
Hence, to reduce the impact of wind it is always recommended to use lower tilt angles in the range of 10-12 degrees
Example 1 – Optimum tilt angle for solar PV rooftop project to be installed at a High Rise Building (20 Floors) at Delhi, India.
Latitude angle of Delhi is around 28 Degrees, hence the optimum tilt angle should be around 28 Degrees as per the thub rule. However, thumb rule is only valid for normal height structures. For higher hight or high wind prone roofs, a lower tilt angle should be used.
Hence, to reduce the impact of high winds, instead of 28 Degrees, one should select a lower tilt angle in the range of 10-12 Degrees
Similarly, while planning a solar PV system for a cyclone prone region or a region with higher wind speeds, a lower tilt angle to be selected.
Example 1 – Optimum tilt angle for solar PV rooftop project to be installed at Assam, India.
Latitude angle of Assam is around 26 Degrees, hence the optimum tilt angle should be around 26 Degrees as per the thub rule. Since, Assam experiences very high wind speeds, thumb rule is not valid here . For wind speed prone roofs, a lower tilt angle should be used.
Hence, to reduce the impact of high winds, instead of 26 Degrees, one should select a lower tilt angle in the range of 10-12 Degrees
By selecting the lower tilt angles or angles deviated from latitude angle, we are surely compromising on the energy part. We will experience an energy loss, but here safety of the project and safety of the personals near the project is more necessary.
0 Comments