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BSU starts second phase of largest geothermal system in U.S.
by Staff Writers
Muncie IN (SPX) Jul 25, 2012


Work has begun on Phase 2, which includes installation of 780 of the remaining 1,800 boreholes in a field on the south area of campus.

In the shadow of two outdated smokestacks and four antiquated coal-fired boilers, Ball State has started the second and final phase of converting the university to a geothermal ground-source heat pump system - the largest project of its kind in the United States. The conversion, started in 2009 to replace the coal boilers, now provides heating and cooling to nearly half the campus.

When the system is complete, the shift from fossil fuels to a renewable energy source will reduce the university's carbon footprint by nearly half while saving $2 million a year in operating costs.

Ball State is installing a vertical, closed-loop district system that uses only fresh water. The system uses the Earth's ability to store heat in the ground and water thermal masses. A geothermal heat pump uses the Earth as either a heat source, when operating in heating mode, or a heat sink, when operating in cooling mode.

Under the direction of Jim Lowe, director of engineering, construction and operations, work was recently completed on Phase 1, which includes two geothermal fields, construction of the North District Energy Station and connecting buildlings on the northern part of campus to the new distribution system.

Work has begun on Phase 2, which includes installation of 780 of the remaining 1,800 boreholes in a field on the south area of campus. Construction will continue throughout 2013-2014 and will include a new District Energy Station South containing two 2,500-ton heat pump chillers and a hot water loop around the south portion of campus. The system will then connect to all buildings on campus - eventually providing heating and cooling to 5.5 million square feet.

"When costs began to escalate for the installation of a new fossil fuel burning boiler, the university began to evaluate other renewable energy options," Lowe says. "This led to the decision to convert the campus to a more efficient geothermal-based heating and cooling system."

The project has caught the attention of universities and communities across the nation. Lowe is sharing information about the university's new operation with others who want learn how they too can benefit from a geothermal system.

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ENERGY NEWS
Roadmap for a Sustainable Energy System in the Dominican Republic
Santo Domingo, Dominican Republic (SPX) Jul 23, 2012
According to a new report released by the Worldwatch Institute's Climate and Energy Program, the Dominican Republic will benefit economically, socially, and environmentally if it relied more heavily on renewable energy sources and less on fossil fuels. The report, Roadmap to a Sustainable Energy System: Harnessing the Dominican Republic's Wind and Solar Resources, assesses the Caribbean co ... read more


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