Waste Heat Recovery
Recycling the heat that spews from industrial smokestacks may be one of the biggest opportunities for reducing greenhouse gas emissions, yet not many climate-savvy entrepreneurs are aware of it. When it comes to energy conservation, “[b]y and large, the world ignores the biggest, single most cost-effective, most profitable thing to do, which is recycle the energy that we’re wasting,” says Thomas Casten, chairman of the Illinois-based company Recycled Energy Development (RED).
Of the 500,000 smokestacks in the United States, the 47,500 stacks that produce waste heat above 260 degrees Celsius (500 degrees Fahrenheit) could produce at least 50,000 megawatts of power, says Casten. That’s almost half the energy produced by the U. S. nuclear fleet, he notes. Companies like RED and its competitors, Cain Industries and GTS Energy, Inc., all work to help develop waste heat recovery in the United States.
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