API Inject-Aire Burners
David Bohn, a Redding, CT, executive, heads Preferred Utilities Manufacturing Corporation, a firm that provides coordinated power plant equipment manufacturing and engineering services. David Bohn and his team in Redding, CT, are experienced in enabling industrial and residential facilities to meet federal, state, and municipal mandates related to emissions and energy efficiency.
One of Preferred Utilities’ success stories involved the installation of a low-emissions, high-efficiency API Inject-Aire burner within the New York City Housing Authority’s (NYCHA) Stapleton Houses. This innovative system brought a solution uniquely capable of meeting strict carbon footprint reduction mandates outlined in New York City Local Law 87.
The burners have the capacity to decrease electricity consumption by up to 85 percent, compared with previous generation burners. The pre-purge and post-purge cycles associated with such burners have been reduced by more than half, with systemwide thermal shock wear and tear decreased a corresponding amount.
A distinct advantage of Preferred Utilities’ low-emissions technology is that it enables facilities to quickly and cost effectively upgrade to ultralow-emissions technologies as they come online. More opportunities for replacement exist, as a number of the company’s burners approach 50 years of service within the NYCHA and New York City Board of Education.
Preferred Utilities Manufacturing Corporation
David Bohn is a Redding, CT, executive who directs Preferred Utilities Manufacturing Corporation as president and offers a host of energy-efficient products ranging from industrial boilers and burners to combustion controllers. David Bohn and his Redding, CT, team oversaw a major coal-to-natural-gas boiler conversion process that reflected a 2012 mandate for the Wright-Patterson Air Force Base to be brought under new U.S. Environmental Protection Agency emission limits.
The Dayton, Ohio, base has historically operated using coal- and natural-gas-fired boilers. The coal-fired boilers did not come in under new Maximum Achievable Control Technology (MACT) standards in areas such as particulate and mercury. With compliance deadlines fast approaching, major conversions of two coal-fired boilers were initiated, as well as the conversion two coal-powered high-temperature-hot-water (HTHW) systems. The other units were planned for demolition.
When completed, the upgrades significantly decreased pollutant emissions and reduced the amount of carbon dioxide released by 50 percent. With the boiler modifications having completed last year, they are now fully operational and helping meet sustainability goals.
Preferred Utilities Manufacturing Corporation
David G. Bohn is a Redding, CT, executive who guides Preferred Utilities Manufacturing Corporation as president. His firm emphasizes energy efficiency in its manufactured products, which encompass industrial oil and gas powered boilers and burners as well as combustion controllers. David G. Bohn and his Redding, CT, team have completed a number of high profile projects including a coal-to-natural-gas boiler conversion assignment at the Wright-Patterson Air Force Base (WPAFB).
Located in Dayton, Ohio, WPAFB faced a significant challenge in meeting new US Environmental Protection Agency “Maximum Achievable Control Technology” regulations, which lay out boiler emission limits. In particular, a pair of central heating plants needed to be modified from coal-firing technologies to incorporate natural gas, which burns more readily.
The Tulsa-based Preferred Special Combustion Engineering (PSCE) division completed retrofits on a variety of plant assemblies, from burners to fans, and undertook extensive performance testing. The late 1970s steam boilers were finally able to meet the temperature, pressure, and output indicated on their original nameplate. In addition, the PSCE solution was successful in reducing emissions of greenhouse gases by one half to within mandated levels.
David Bohn, an executive in the Redding, CT, area, serves as president of Preferred Utilities Manufacturing Corporation. A member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers, David Bohn is responsible for sales, profitability, and product performance.
A major concern in the boiler industry is safety. From fires to explosions, boilers pose extreme risks if the proper precautions are not taken. Preferred Utilities Manufacturing Corporation takes this into consideration and has developed two types of fire safety products that aid in fire prevention and containment.
The Fusomatic Electric Cut-Off Switch, used in combustion installations and attached to a temperature-monitored area, is approved by Underwriters Laboratories (UL) and the Massachusetts Department of Public Safety. The product prevents fires by breaking the burner control circuit when the temperature rises above 165 degrees Fahrenheit and melts the fusible element.
Preferred Utilities Manufacturing Corporation also makes the Fire Safety Gas Shut-off Valves. The model 110-G, utilized in fuel gas piping systems, automatically turns off fuel gas flow when a fire occurs. The product performs without electrical power supply, and as with the Fusomatic Electric Cut-Off Switch, once the surrounding temperature rises in excess of 165 degrees Fahrenheit, the fusible link melts and the internal spring closes the valve.