Energy recovery

This input mass flow often comes from the system's surroundings, which, being at ambient conditions, are at a lower temperature than the waste stream.

Electric Turbo Compounding (ETC) is a technology solution to the challenge of improving the fuel efficiency of gas and diesel engines by recovering waste energy from the exhaust gases.

The effect of this will then be: In 2008 Tom Casten, chairman of Recycled Energy Development, said that "We think we could make about 19 to 20 percent of U.S. electricity with heat that is currently thrown away by industry.

Widespread use of energy recycling could therefore reduce global warming emissions by an estimated 20 percent.

[11][12] It is difficult to quantify the environmental impact of a global energy recovery implementation in some sectors.