Quench and cooling applications in glass production are tough on the fans. The need for quick bursts of quench or cooling air requires the fans to either accelerate/decelerate quickly or have quick closing guide vanes to start and stop the air flow at many short intervals and on demand. Each of these methods create significant stressing cycles on the fan impeller and thereby also to the bearings, couplings, and even casings and other components. These stressing cycles can result in higher potential for failures, lower reliability, extra downtime and maintenance, and potentially catastrophic results which may cause damage to equipment, property, and possibly injuries to personnel, not to mention lost production. Likewise, because of the limitations and potential risks of using steel impeller fans, more energy may be consumed than is necessary, and glass production could be limited.
Howden’s ExVel Composite turbo fans are a game changer for glass producers, helping them increase production, optimize energy usage, and most importantly improving safety. ExVel Composite turbo fans are substantially more resistant to high cycle fatigue due to start/stops, speed changes, and process changes, are able to accelerate and decelerate quickly, reduce the loads to associated equipment, and allow process to be optimized to save energy, cost, and reduce the carbon footprint.