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When designing their latest fan, Ziehl-Abegg developed an aerodynamic impeller based on the wing of an owl. The results are stunning, with minimal noise and maximum energy efficiency, meaning the Owlet fans really are the fan of the future. Electronically commutated direct-current, external rotor motors, the Owlet fans combine Ziehl-Abegg’s pioneering ECblue technology, featuring: Highest […]

With Ecodesign Directive 2009/125/EC (Energy related Products) the European Union has defined requirements for the environmentally sound design of energy consuming products. This directive is part of the 20-20-20 target, according to which energy use should be reduced by 20% and the share of renewable energies increased by 20%, by 2020. It replaces the EuP […]

Please note prior to fan selection: If you are not sure whether you need an explosion proof ATEX fan, or need to know the zone in which your application is classified, please consult an official authority in your country. As of 20th April 2016, the new Directive ATEX 2014-34 EU superseded the previous ATEX 94/9/EC […]

System Performance In general, fans are selected for their ability to deliver a required air volume flow rate against an estimated system resistance to flow, or pressure. This defines an Operating Point and is usually expressed in m³/h at Pascals, or cfm at inches Water Gauge. Volume Flow Rate Volume flow rate is calculated from […]

When selecting a fan, the engineer will need several key pieces of information to establish the requirements of the application and provide a solution accordingly. One such characteristic is the duty point. For example, what is the air volume flow rate required and what is the pressure loss of the system? Units of Measurement The […]