FanZ designs efficient high aspect ratio blades for axial fans. For the required head & flow conditions, FanZ calculates the span-wise variation of chord length & twist of the most optimal sectional profile. The software also predicts the off-design-performance and structural robustness of the blade. The output is in the form of ready to manufacture DXF format drawing files. More than a dozen customers use FanZ for the design of their cooling tower fans.

Cooling Tower

Mining Ventilation

Off-Design Performance

Structural Robustness

Ready to Manufacture Drawings

Minimum Processing Time

Axial fans are normally used in low-pressure head and high volume flow rate applications. They are used to supply fresh air or to exhaust air out, especially for heat exchange. Common applications for axial fans are the cooling tower, air-cooled condensers and wind tunnels. The key performance parameters are discharge, pressure, input power and efficiency. The performance is impacted by tip clearance, inlet conditions, system resistance, density, vibrations, number of blades, blade shape and seal disc. The performance testing usually conducted as per ISO 5801, DIN 24163 and AMCA 210.07.

FanZ estimates the performance of axial fan using Blade Element Momentum Theory. This involves breaking the blade down into several small parts along the axis and then determining the forces on each of these small blade elements. The theory uses 2D aerodynamic coefficient tables and several assumptions like steady, inviscid, incompressible flow. In this method, one equation each for thrust and torque on the blade element is solved and integrated along the span. The method supports fan with the hub to tip ratio of less than 0.35. Most axial fans are manufactured nowadays with a composite monocoque construction.