It would be great if we have efficient thermoelectric generators. This would be a great solution to global warming. High temp means more electricity. How to make them more efficient?
Thermoelectric generators - why they are not efficient?flash myspace
That's just the nature of the beast. I think Thermionic Power converters have a more likely future than semiconductor Thermoelectric generators. The article in the link mentions efficiency up to 20%, but this is at extremely hot temperatures %26gt; 2000 Kelvin. There are many engineering problems in making devices low cost, and able to tolerate such high temperatures.
Cesium vapor is used, and electrons are "boiled off".
It would help global warming only if it used solar or nuclear as a heat source instead of the burning of fossil fuels to generate electricity. Solar power, wind power, wave power, and nuclear power could all be exploited to reduce green house gas emissions, and help the global warming problem.
Thermoelectric generators - why they are not efficient?myspace pages myspace.comTE's big problem is that it's all solid state, so much of the heat is lost by conduction across the junction. I'd expect thermophotovoltaic to work out long before thermionic becomes practical here on earth, but none of them can really compete with a good steam turbine. Report It
Like all thermodynamic engines (generators); thier efficiency depends on the temperature difference between the hot side and the cold side. The maximum temperature is limited by the mechanical properties of the materials used.
In a way thermoelectric generator is like a thermocouple, each wire generates a few milivolts. The max voltage is also limited by the material. The current technology is not really eficient yet.
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