Fig. 3. BioWanze intends eventually to provide half the amount of the bio-fuel
consumed in Belgium.
temperature. In addition, the terminal box of the motor is positioned to improve air flow over the motor. In practical terms this means less hot-spots and, consequently, improved reliability.
Te reliability and operating life of W22 motors is also extended by WEG’s innovative WSeal system. Tis has a W-ring with a metal cover, which protects the rubber sealing from harmful ultra-violet rays. Te same design also ensures that the interior of the motor benefits from much higher levels of protection against the input of external agents, such as water and dust, which may cause damage to rolling bearings within the motor. BioWanze is the result of an investment of more than €250 million; it is owned by CropEnergies, a subsidiary of the Südzucker Group, and one of the main European producers of ethanol. Te innovative BioWanze production process uses wheat syrup as fuel for the biomass boiler. Tis reduces the emission of carbon dioxide by 70 per cent when compared to fossil fuels. Te biomass boiler is 35-metres high, 60-metres long and 20-metres wide, and is capable of producing 100 tons/hour of steam at 93bar and 520ºC. Ethanol is an organo-oxygen compound of the chemical formula C2
H5 OH. It is used as a fuel for
cars in two versions: hydrous ethanol (in cars run on alcohol or flex fuel models) and anhydrous ethanol (added to petrol at a 25 per cent proportion). Te first has 7 per cent water in the blend while the latter has a maximum of 0.7 per cent. l
For more information, visit
www.weg.net www.engineerlive.com 39
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