Car Park Jet Fan

Unlike standard ducted ventilation fans which are measured in volumetric flow (CFM or CMH), the performance of an impulse jet fan is measured strictly by its aerodynamic thrust output, rated in Newtons (N), which dictates its ability to entrain and push surrounding ambient air.

Unlike ducted fans that run continuously, jet fans utilize Demand Control Ventilation (DCV). By linking the jet fans to Carbon Monoxide (CO) sensors, the fans only activate and ramp up via VFDs when toxic gas levels rise, saving up to 60% in annual brake horsepower consumption.

No, a standard jet fan is for CO dilution only. For smoke extraction during a vehicle fire, the jet fan must be strictly rated for High-Temperature (e.g., 300°C for 2 hours or 400°C for 2 hours) to comply with international fire life safety codes like EN 12101-3.

Jet fan spacing is determined by the fan's throw distance and thrust rating. Typically, fans are spaced 15 to 25 meters apart in parallel rows, ensuring the aerodynamic throw profile of one fan successfully entrains air and hands it off to the intake zone of the subsequent fan.

Because jet fans operate at extremely high discharge velocities to create thrust, they generate significant aerodynamic noise. Cylindrical silencers lined with acoustically transparent perforated metal and high-density mineral wool are mounted upstream and downstream to meet stringent urban Noise Criteria (NC).