David Bohn of Preferred Utilities Manufacturing Corporation in Danbury, CT wrote the following article which outlines the design capabilities and success of the Preferred Utilities Manufacturing Corporation API Inject-Aire burner. The new high-efficiency, low- emissions Preferred Utilities API Inject-Aire burner installed at Stapleton Houses has been in service and performing for more than a year now. At this installation New York City Housing Authority (NYCHA) has been enjoying electric and fuel savings, prolonging the life of the boiler and reducing the carbon footprint of the facility while limiting NOx emissions. The API Inject-Aire burner possesses several qualities that make it attractive to a market trending towards lower emissions and greater efficiency. The burner is the first that we know of to comply with the New York City Local Law 87 which requires drastic carbon footprint reduction in the next few years. Product enhancements include up to 85% reduction in electricity consumption over current burners installed and being purchased by NYCHA.
Additionally, once compliant with Local Law 87, Preferred Utilities’ low emissions technology allows a facility to easily and inexpensively upgrade (without burner replacement) to ultra low emissions technology in the future. High fuel efficiency translates into significantly reduced greenhouse gas emissions. The ultra low excess air remains through the entire firing range— 10% to 40% firing range <3.5% O2, 50 to 100% firing range <2% O2. With a significantly high turn down of 10:1 on low pressure natural gas, and 8:1 turn down on oil, the burner also has an over 50% reduction in cycling of the burner, burner motor, burner and boiler servos and all burner components. The stress reduction on the boiler will positively impact longevity and reduce annual maintenance costs. The burner provides dramatic reduction in boiler heat loss by eliminating more than 50% of the pre-purge and post-purge cycles required by common low turn down burners. Each one of these shut-down and start-up cycles for a boiler can wasted up to five total boiler volumes worth of BTU rich combustion air, “cooling” the boiler with each cycle. This important cycling reduction also cuts electricity consumption, wasted fuel and greenhouse gas emissions. Preferred guarantees an over 50% reduction in boiler and boiler system thermal shock wear and tear that originate from low turn down, high cycling of the burner. In addition, When Quality, Durability, and Performance Matter—A Look at Stapleton Houses, Staten Island, New York Preferred’s new burner and burner component warranties are unmatched in the industry. Burner life will match or exceed the boiler life, eliminating the need for costly retrofits, the permit process that goes with a burner retrofit, and inconvenient boiler down time. There are Preferred Utilities burners currently in active service for the New York City Housing Authority and the New York City Board of Education that are more than 45 years old. With the Stapleton Houses installation, Prefrred Utilities Manufacturing Corporation ushers in a new era of high quality, long life, low maintenance burners and controls that will deliver unprecedented efficiency enhancements for fuel and electricity consumption while substantially reducing greenhouse gas emissions and cutting NOx emissions by more than 50%. David G. Bohn is the President and CEO of Preferred Utilities Manufacturing Corporation in Danbury, CT. David has worked at Preferred Utilities for almost 30 years and gratefully follows in his father’s and grandfather’s tradition of putting quality and sound engineering at the center of every product with the promise that Preferred stands behind every application because our name is on it.
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AuthorDavid G. Bohn - Executive Involved in His Connecticut Community Archives
December 2017
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