HYDRONICS e Continued from p 57
sharing his successful personal experiences with contractor- attendees at several workshops that Danbury Plumbing & HVAC Supply has recently hosted, with the help of Urell’s Kevin Crean. The company also displays the ALPHA in its Degrees of Comfort showroom, which presets a variety of energy-saving heating products — boilers, pumps, air handlers, a heat recovery system — for contractors to use to educate their customers on the virtues and benefits of conservation. Once again, the response to these marketing efforts has been much more enthusiastic than skeptical. “Any new product that lowers
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energy consumption and puts money into people’s pockets is going to draw serious attention and interest,” Hunt remarks. “But with the ALPHA, we have an even stronger, more believable story to tell, because we can point to my own real-life experiences with the product and the hard dollars that I’ve been saving and will continue to save.” l
Grundfos furnishes energy-saving pump
system for LIVESTRONG sporting park KANSAS CITY, KAN.— When soccer fans and concert goers enter the new, state-of- the-art LIVESTRONG Sporting Park for events, one aspect of the park will not be on their minds; whether or not the plumbing is working properly. Nor will it worry Michelle Land of U.S. Engineering Company. Land is the senior project manager for the mechanical engineering firm that installed Grundfos pumps in the new sports facility. She knows that the Grundfos BoosterpaQ System will ensure that the park will run smoothly, as well as achieve energy and space savings, all while requiring low maintenance. “The pump package was easy to install,” Land says. The 342,000-plus square-foot stadium seats over 18,000 fans for soccer games
and more than 25,000 for concerts. The highest flow demand will occur at intermission, such as halftime during a soccer game. To ensure that sufficient water pressure is available for all stadium water fixtures, a "worst case" flow capacity of 1,200 gallons per minute is required. The Grundfos BoosterpaQ Hydro MPC, consisting of three vertical multi-stage CR pumps, is designed to handle this type of volume while maintaining constant pressure. If there is no flow demand, the system is designed to switch off automatically. When flow is again required, the system automatically switches on. Reece Robinson, applications engineering supervisor of Grundfos Pumps Corporation, explains, “There are many suppliers to choose from for this type of application, but very few can provide a control system that is as smooth and energy efficient as the Grundfos Hydro MPC system.” To ensure that the system could handle the volume capacity in the new stadium,
a “superflush” was performed to simulate the simultaneous flushing of hundreds of fixtures. The Grundfos system passed with flying colors. “We were all very impressed with the performance of the system,” says Land. The BoosterpaQ also passed another challenge, the “nickel test,” which is related to vibration. The test works by placing a nickel on top of the pump — on its edge — while the pump is running at full speed to see whether the nickel moves or falls.
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phc july 2011
www.phcnews.com
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