Engineered Systems - October 2008 - (Page 47)

www.dedietrichboilers.com D e Peel and stick solar panels were used on the exterior of the Phoenix Convention Center to help supply 150,000 kWh annually. bank of high efficiency gas boilers by Laars. Last year, crews from Phoenix-based Code Electric installed peel-and-stick solar panels on roughly a third of the West Building’s two-acre roof. The panels will help supply power to the building at an anticipated rate of 150,000 kWh annually, though city officials admit the amount is a small fraction of what the building will use. The $850,000, 732-panel project will be the biggest solar-panel installation on a downtown building, and it’s the first time this type of solar-energy technology has been used in downtown Phoenix. It’s estimated that, in putting the sun’s energy to work, the center’s carbon-dioxide pollution will be cut by 95 metric tons each year. According to Lexie Van Haren, director of communications for the convention center, the mechanical equipment specified for the facility is the key ingredient to achieving energy efficiency. “And an energy management system track sand optimizes energy consumption levels, further reducing heating and cooling costs,” she added. HEATING IN PHOENIX? Well, sure. Even in Phoenix, winter can take the thermometer into the 20s and 30s, though — on average — they get less than a week of below-freezing temperatures a year. But since the city’s new convention center is now a hot winter destination for large groups of people, they must accommodate the need for heating. Phoenix-based Imcor, Inc., a 400+ employee, commercial and industrial mechanical contracting firm, was brought in to do all of the key Phase 1 and Phase 2 plumbing, piping, HVAC, and hydronic installations. During the Phase 1 work, according to Bill Mason, president of Imcor, their crews installed 10 high-efficiency Rheos+ boilers by Laars Heating Systems Company, a subsidiary of Bradford White Corporation. “Each of the ten Rheos+ boilers installed by Imcor were 2 million Btuh in size, for a total heat load of 20 million Btuh,” said Victor Rilling, president of the Mechanical Room Inc., the Phoenix-based manufacturer’s rep firm that helped specify the boilers, ideally suited for the convention center’s needs. “The boilers feed 58,000 lineal feet of carbon steel and copper heating water piping,” explained Dan Brown, Imcor’s project manager for all of the firm’s phase 1 and 2 work. “From the boilers, it’s 800 ft to the newly-renovated South Hall where the boilers are heating 145,000 sq ft of space through air handlers, coils, and VAVs. The other building, 300 feet from the West Hall location where the boilers are, is the Phoenix Symphony Hall, where we provide for 90,000 sq ft of heated space.” It’s in the convention center’s West Hall where the boilers are providing heat for 210,000 sq ft through 22 air handlers, 178 VAV boxes, and 81 fancoil units, most of which require heating, though some of which carry only chilled water for use during the summer. A unique feature to Imcor’s installation was the way they configured the multiple boiler’s exhaust flue. “We manifolded all of the boilers’ two exhaust headers, each with five boilers, all of them connected to a com- D i e t r i c h BOILERS Makes a Difference Input 219 at www.esmagazine.com/instantproductinfo w w w. esmag a zin e. c o m ESM10084DD#1.indd 1 47 9/19/08 1:53:41 PM http://www.dedietrichboilers.com http://www.dedietrichboilers.com http://www.esmagazine.com/instantproductinfo http://www.esmagazine.com

Table of Contents Feed for the Digital Edition of Engineered Systems - October 2008

Engineered Systems - October 2008 Contents Editor’s Note Letters Back2Basics HVAC Challenge Case in Point Commissioning Building Automation HydroTech HVACR Designer Tips Special Insert: Engineer's Technical Library Fall 2008 Living Wild! Chilled Beams in Chicago Phoenix Convention Center: On The Rise Cold-Climate HVAC Challenges Humidification Strategies For Data Centers & Network Rooms Special Advertising Supplement: Tabb Talk Computers & Software Issues & Events Products Literature & Catalogs Glossary Classifieds Advertiser Index Tomorrow’s Environment

Engineered Systems - October 2008

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