Mr. Sigloch, what were the key factors driving the enhancement of the RadiPac?
We are constantly improving our fans for ventilation and air conditioning applications because our users’ demands are increasing rapidly — particularly when it comes to control options and energy efficiency. The main drivers here are compliance with legal requirements, growing environmental awareness, and the potential for savings on operating costs. We are also optimizing the RadiPac series as part of our continuous improvement process.
How is this demonstrated by the new generation of fans?
The new generation of RadiPac fans operates at higher efficiency levels. Higher speeds also ensure greater air flow and a static pressure increase to up to 2,000 Pa or more, meaning even “high-pressure applications” can be covered. The noise level has also been reduced further. In comparison to the predecessor series, the noise level has been reduced by three to seven dB(A), depending on the operating point. To meet the requirements of different installation situations, this new centrifugal fan series is also available in a standard and short version.
How did you achieve these improvements?
We optimized the impeller in line with the latest aerodynamic findings, which has played a key role in the further development of the fan. In conjunction with the injection molding process used, the high-strength, glass-fiber-reinforced composite material enables a complex shape to be produced. This blade geometry drastically reduces flow losses. The driving force behind the new RadiPac centrifugal fans are high-efficiency GreenTech EC motors in the power range from 500 W to 8 kW. The power output of the integrated electronics has been further improved and the motor dimensions are even more compact. This makes the drive currently the most powerful in its class.