Engineered Systems - February 2009 - (Page 15) CaseInPoint compared to operating one non-redundant chiller system. The McQuay chiller is in use about 65% of the time — whenever the part load performance gives the most energy benefit. That can be as low as 0.33 kW/ton IPLV. Seasonal runtime hours on the original 550-ton chiller have been reduced by approximately 1,800 hours. Total chiller runtime hours are approximately 3,000 hrs/yr. The larger chiller operates for just over one-third of the season. “We’ve learned that, as the frictionless chiller gets close to full load, we achieve additional cost savings by running the larger machine at partial load,” said McCombs. Working in tandem, the two chillers give the McNamara Center the redundancy and reliability it needs. As a result, McCombs can ensure University staff and guests that they can rely on the building’s cooling effects even on the hottest days, while he’s ensured of saving valuable kWh. LEED the way in reducing your client’s carbon foot print! High energy costs siphon off profits even quicker than you earn them. To reduce energy loss through open doorways and improve your energy savings plan, include a Mars Brand Air Door. It’s the most cost effective environmental barrier you’ll never see. Call and ask us how. BREATHE EASY UVC lights keep out unwanted resident in twin condo towers: mold www.marsair.com 800.421.1266 Input 137 at www.esmagazine.com/instantproductinfo ESM02094Mars.indd 1 1/21/09 10:08:59 AM Located on Toronto’s waterfront in the Harbourfront Centre District, Number One York Quay is one of the city’s most prestigious condominium developments. The complex includes more than 800 luxury suites from 600 to 2,000 sq ft, with some units as large as 4,000 sq ft. Amenities include indoor and outdoor swimming pools, a fitness center, private restaurant and lounge, sauna and steam rooms, billiard room, squash and basketball facilities, and a 24-hr concierge. It is widely known that people can develop allergy, asthma, and other symptoms from A/C, but many people do not realize that mold growth in the cooling coil in the heart of the A/C system is the culprit. Mold buildup within A/C systems, including the fancoil units found in condominiums and apartments, is a universal occurrence that is not limited to hot and humid climates. To make sure mold did not become a problem for its 2,000 residents, the Condominium Board of Number One York Quay (Toronto) proactively found a sufficiently effective and affordable solution: They retrofitted the systems with germicidal “UVC Emitters™” manufactured by Steril-Aire, Inc. to stop the growth and spread of mold and mold spores, viruses, and bacteria. Input 8 at www.esmagazine.com/instantproductinfo w w w. esmag a zine . c o m 15 http://www.marsair.com http://www.marsair.com http://www.esmagazine.com/instantproductinfo http://www.automatedbuildings.com http://www.esmagazine.com/instantproductinfo http://www.esmagazine.com
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