Charleston, Ill., October 10, 2011 — Eastern Illinois University and Honeywell unveiled the school’s Renewable Energy Center, as part of a grand opening ceremony held on campus for students, faculty and the broader Charleston community.
The REC is a 19,000-square-foot steam plant that will provide heat for buildings and classrooms across the university grounds. It is driven by two large biomass gasifiers — the first application of this technology in Illinois and the surrounding region — that use wood chips from forest residue for fuel.
By switching to a renewable energy source, EIU will reduce annual carbon dioxide emissions by an estimated 20,000 metric tons, which is equivalent to removing more than 3,600 cars from the road, according to figures from the U.S. Environmental Protection Agency.
The new plant is one piece of a comprehensive energy- and environmental-conservation program that also includes a variety of upgrades to other university facilities and infrastructure.
The product of close collaboration between EIU and Honeywell, the program is expected to cut energy use on campus in half and carbon dioxide emissions by 80 percent. The facility will more than pay for itself through the projected $140 million in energy savings over the next two decades — savings that are guaranteed through a 20-year performance contract with Honeywell.
To heat the campus, a material-handling system at the plant delivers wood chips to the biomass gasifiers where they are broken down in a heated, oxygen-deprived chamber, creating a synthetic gas that burns similar to natural gas. The gas is then used to fire high-efficiency boilers, which results in more complete combustion and lower emissions, and gives EIU a carbon-neutral solution for heating its facilities.
The gasifiers will consume an estimated 27,000 tons of wood per year, replacing the more than 10,000 tons of coal burned annually by EIU’s existing plant, which will be decommissioned and repurposed for other university needs.
The REC also features a back-pressure turbine that is powered by superheated steam from one of the boilers to generate electricity, as well as two ground-mounted solar arrays. The turbine and arrays will provide other sources of renewable energy for the university and generate almost 3 million kWh of electricity per year — enough to power 250 homes on average.