What is hydraulic ventilation?

Hydraulic ventilation refers to the process of using water fog patterns to effectively move hot gases and smoke out of a structure. By applying water in the form of a fine mist or fog, firefighters can utilize the physics of heat and pressure to enhance smoke removal during ventilation efforts. This approach takes advantage of the cooling effect that the water has on the hot gases, making them denser and causing them to fall. Simultaneously, the water fog can create a barrier that allows for better control over the ventilation of smoke and heat, improving the overall effectiveness of the firefighting operation.

Utilizing water fog patterns not only helps in clearing the smoke but also reduces the chances of reignition, as the moisture can begin to cool the surrounding materials. This technique is particularly valuable in structures where traditional methods of ventilation may be insufficient due to the volume of smoke or heat present.