Yeah, interesting. I'm surprised that Stirling engines are the best we can do to recover electrical energy from the heat - it means using moving parts, and an extra conversion step (thermal > mech > elec). Shame there's no better (solid state?) way to do it.
[sorry if this posts twice, something screwed up.]
Well, the speed things are going in materials development I'm betting there will be a solid-state method within a decade. Check some of the articles here: http://phys.org/
Looking a bit further: http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator it's nothing new ... I guess thermoelectric materials just don't produce enough electric bang for your thermal buck, because they must surely be more reliable than Stirling engines.
I’ve been an engineer, barman, skip lorry driver, coalman, boat window manufacturer, contract grass cutter and builder. Now I write science fiction books, and am slowly getting over the feeling that someone is going to find me out, and can call myself a writer without wincing and ducking my head. As professions go, I prefer this one: I don’t have to clock-in, change my clothes after work, nor scrub sensitive parts of my body with detergent. I think I’ll hang around.
Contact: ndotasheratvirgindotnet
4 comments:
Yeah, interesting. I'm surprised that Stirling engines are the best we can do to recover electrical energy from the heat - it means using moving parts, and an extra conversion step (thermal > mech > elec). Shame there's no better (solid state?) way to do it.
[sorry if this posts twice, something screwed up.]
Well, the speed things are going in materials development I'm betting there will be a solid-state method within a decade. Check some of the articles here: http://phys.org/
Heh, and a day later I read this article: http://phys.org/news/2012-11-energy-savingseasy-dirt-pressure.html
Looking a bit further: http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator
it's nothing new ... I guess thermoelectric materials just don't produce enough electric bang for your thermal buck, because they must surely be more reliable than Stirling engines.
Post a Comment