PROJECT LOCATION: Pitt County, NC
Pitt County Memorial Hospital's project involves the direct sale of gas through a 2.5-mile pipeline. It is important to a hospital that any energy project, especially the conversion of two of its base-loading boilers, be seamless and invisible to hospital operations. Sterilization equipment, autoclaves, food preparation, heating etc., are around-the-clock necessities. With suggestions from John Cosulich of the Los Angeles County Sanitation Department and consulting engineering services from Dick Prosser of GC Environmental, Inc., we created an invisible system. The one boiler has a more standard automatic re-light system on natural gas, while the second has a Moore Controller that simultaneously modulates natural gas and landfill gas usage on a small package boiler.
These were coupled with a complex lead lag system for the three backup boilers. The result: The operator would not know when landfill gas or natural gas is being employed without looking at the gauges. This allows the hospital to maximize the resource by taking into stride any fluctuations in landfill gas delivery flow and utilize better than 98 percent of the available landfill gas.
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