The effect of throat diameter and wind velocity on the performance of turbo ventilator is studied experimentally and using CFD software.

This would give proper guideline to the user to select appropriate turbo ventilator and understand the extraction capacity of the ventilator at different wind velocities.

Turbo ventilator models with throat diameter 600, 500, 300 mm are tested for their performance.

Mass flow rate is increasing with the rotational speed of turbo ventilator and after a certain speed it rate decreases due to wind barrier.

Turbo ventilator with lager throat diameter gives the more mass flow rate comparative to small size ventilator.

CFD results are validated with the results of the experiment results.

The CFD results helped to study the internal as well as external flow around and in the turbo ventilator.