In a Venturi type cooling tower, how is airflow created?

In a Venturi type cooling tower, airflow is created primarily by the principle of natural convection and the design of the tower itself, particularly through airflow induced by the reduction in pressure at the throat of the Venturi. As the water is sprayed into the tower, it creates a cooling effect, and the design allows for hot air to rise and escape, facilitating the movement of cool air into the system.

Air jets and spray nozzles do play roles in various cooling systems, but in the context of a Venturi cooling tower, the significant driving force behind airflow is actually the natural movement of air and the pressure differences generated by the specific construction of the tower, rather than mechanical fans or nozzles actively propelling air.

While fans can enhance airflow in many cooling systems, a Venturi design relies more on the physical movement of air resulting from thermal gradients and pressure differentials. In this regard, the concept of natural convection is critical to understanding how airflow occurs in such a system.