Hot water used to generate electricity in Wales

Hot water used to generate electricity in Wales
Steve Bush
Recovering waste heat using thermocouples could become practicable through work at the University of Cardiff.
“We have developed materials specifically for taking energy from hot temperature water,” said project research associate Dr Simon Williams.
“One of our devices has a generation density of 50kW per cubic metre of machine volume from a 80 to 90?C temperature difference in water,” said Williams.
Thermoelectric generators operating from waste hot water need minimal maintenance, said Williams, so any electricity they generate is essentially free once the initial pay-back period of “a few years” is completed.
A future aim is to extract useful amounts of electricity from domestic waste water.


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