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The new RunEco EP650 Turbo Blower developed by Runtech Systems features an ABB motor, leading to reduced rotor losses and higher load capacity. A new bearing helps lower the need for maintenance.
Papermakers around the world know RunEco EP Turbo Blowers for their capability to operate efficiently across a wide range of vacuum levels and air flows. During the past decades, paper mills have optimized vacuum levels while taking advantage of the higher efficiency a blower has over a traditional liquid ring pump system.
High-speed motors, driven by frequency converters, enable a typical RunEco EP blower to provide paper machine vacuum levels from 10 to 70 kPa. A wider offering of impeller designs allows highly efficient levels across the operating range. In addition, the number and usage of throttling valves can be reduced to a minimum, resulting in energy savings from 30–70% compared with traditional vacuum systems.
Runtech Systems has now taken its successful RunEco EP Turbo Blower family yet another step further by launching a new member – the EP650 Turbo Blower. The most important technical difference in the new model compared with the company’s other EP models is that it has been equipped with ABB motor using laminated rotor technology instead of a solid rotor. This results in lower rotor losses and improved load capacity.
Additionally, EP650 features a redesigned bearing with higher tolerance for abnormal running conditions, resulting in extended maintenance intervals. The improved motor cooling makes it possible to increase power by 100 kW, which in turn improves air flow by approximately one cubic meter per second.
“In addition to higher efficiency, our customers also benefit from ABB’s proven reliable technology and global presence,” says Jussi Lahtinen, Sales Director, Runtech Systems. “An extra benefit brought by the ABB motor is a simpler drive. The ABB motor can be used without an extra sinus filter in the drive, making it less expensive and more reliable.”
RunEco EP650 is a variable speed and variable capacity blower designed for large paper machines in both greenfield and retrofit installations. It is a totally water-free solution with significant heat recovery potential. Additionally, its compact design reduces installation costs. To date, over 500 EP Turbo Blowers have already been installed and more than 200 are on order.
Papermakers have welcomed the newcomer with great enthusiasm, and there are several units on order. For example, DS Smith has ordered three EP650 Turbo Blowers for its PM3 in Kemsley, UK. The mill targets at reducing energy costs by 50%, equaling 8.3 MWh. This means a reduction in the mill’s carbon footprint by 2,150 tons of CO2. Using the EP Turbo Blowers, the mill will be able to close down its cooling tower, which eliminates the risk of legionella bacteria from developing and spreading.
