This month a transparent tube topped by a turbine will be installed along the side of a Minneapolis grain silo in an effort to create electricity from wasted heat.
The 7.5-foot diameter tube – called the Energy Column – captures ground level air that rises to power a 3 kilowatt (kW) turbine.
“It’s using the stack effect of hot air rising to create an air flow into a turbine to produce renewable energy on site for the consumer,” said Eric Peterman, co-founder of GRNE Solutions, the Lincoln, Nebraska-based company behind the project. “The idea is creating energy and using energy in the same place, as opposed to creating offsite and pumping it into buildings.”
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