Electrochemical approach has potential to efficiently turn low-grade heat to electricity.
Vast amounts of excess heat are generated by industrial processes and by electric power plants; researchers around the world have spent decades seeking ways to harness some of this wasted energy. Most such efforts have focused on thermoelectric devices, solid-state materials that can produce electricity from a temperature gradient, but the efficiency of such devices is limited by the availability of materials.
Now researchers at MIT and Stanford University have found a new alternative for low-temperature waste-heat conversion into electricity — that is, in cases where temperature differences are less than 100 degrees Celsius.
The system can efficiently harness even relatively small temperature differences, such as a 50 C difference.
“One-third of all energy consumption in the United States ends up as low-grade heat.”
Read more . . .
The Latest on: Waste heat
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