Most refrigeration equipment manufacturers are by now aware of the requirements of the European ErP Directive on fan motors over 125W. This directive affects many condensing unit and chiller fans. Most evaporator fan motors fall below the 125W and are therefore not directly affected by the ErP Directive. However it is now possible to contribute to the “20% saving in energy by 2020” which lies at the heart of the directive and save significantly on the running cost of chilled and frozen food cabinets by introducing energy saving technology...
Drying ovens have been used in the manufacture of ceramics for many years. Lately, there has been a marked increase in the use of biofuels. This often means the need to use wood chip but that wood chip needs to be dried before it can efficiently be made into suitable form for use as fuel. The ovens used for such processes need to have the hot air inside them at a uniform temperature throughout to eliminate cool spots. In order to do this, circulation or through fans need to be used. These fans and their motors need to be robust enough to wit...
Axair Fans has a full range of plate and cased fans from Rosenberg. The sizes range from 200mm to 1000mm diameter; meeting the requirements of ErP 2013 and in many cases are ErP 2015 compliant too. Not only are these sizes available in three phase, but also in single phase for both plate and cased axial fans. These high-efficiency axial fans are used where ever large air volumes must be ventilated against low to medium pressure. High-efficiency axial fans with square inlet cone are used for ventilating restaurants, gymnasiums, conference roo...
Electric motors operate by creating opposing magnetic fields in two locations, the fixed stator and moving rotor. In all electric motors the primary magnetic field is produced by passing an electric current through a coil or coils. In an AC motor the magnetic field in the rotor is created by induction across the air gap between the stator and the rotor and this is inherently inefficient, creating what is known as "air losses" which compound the already significant inefficiency of the “shaded pole motor” used in most AC compact fans. I...