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Heathrow Airport Reduces Energy Use With Xylem’s Flygt Experior System

Contributed by: PumpScout Staff

It’s been one year since the installation of Xylem’s Flygt Experior wastewater pumping system at the Heathrow airport. Since then, the system has reduced energy consumption by 50 percent and completely eliminated the need for maintenance call-outs to the pump station, according to a comparison study conducted by Heathrow Airport’s Water Services Department.

Heathrow Airport Water Services Department commissioned Xylem to evaluate the airport’s wastewater pumping system in the cargo center, which undergoes heavy traffic and activity on a daily basis. After a thorough evaluation, the Xylem team developed and implemented a new pumping system that was reliable and more energy efficient than its predecessor. Following the evaluation, the Xylem team was charged with developing and implementing a reliable and energy saving wastewater pumping solution.

“With operations running regularly it is critical to ensure that systems are run in the most efficient way possible” says Ian Jolly, of Heathrow Airport’s Water Services Department. “As one of the world’s largest and busiest airports, with almost 70 million people travelling through our terminals during 2012, Heathrow Airport is committed to working with innovative, reliable technology to cater for this consistently high footfall of passengers.”

To fulfill these needs, Xylem installed two Experior pumps with non-clog technology and two SmartRun intelligent pump controllers in the sewage wet wall of the cargo area. The fully-integrated Flygt Experior system features three complementary functions (hydraulics, motors and controls) that set it apart from traditional pump systems.

In 2011, Xylem’s Flygt Adaptive N-Pump was awarded “Most Innovative Product of 2011” by the Water Environment Federation. The Adaptive-N hydraulics improves on the demonstrated clog-free impeller of the original Flygt N-pump by designing the impeller to move axially upward long enough for debris and other materials to be transferred even more smoothly. This design reduces stress on the shaft, seals and bearings.

The system’s two SmartRun intelligent pump controllers monitor the pumps’ energy use and adjusts the pump speed to keep energy consumption to a minimum. This electronic monitoring eliminates the need for a site visit and system recalibration.
Since their installation, the cargo holding area pumps have cut energy costs nearly in half and have settled into running at 33-37Hz.

“Heathrow Airport is globally renowned as a gateway for millions of people each year, says
Tony Price, Market Development Manager for Xylem in the UK. “To cater for the system demands associated with dealing with such a high volume of traffic, its pump facilities are constantly under pressure to deliver day in, day out.”

“Our aim was to provide Heathrow with a superior pumping system that would not only help reduce energy bills through eliminating any unnecessary energy consumption, but also by providing a highly reliable solution which would decrease maintenance calls required to ensure the smooth running of the pump system,” says Price. “We were able to quickly identify the key solutions and complete the installation within the cargo center loading area in just under a day.”

Source: Xylem