FWIW, it's been done before, and researched.
https://link.springer.com/article/10...664-011-1580-6
Quote:
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We proposed and fabricated a thermoelectric generator (TEG) using the engine water coolant of passenger vehicles. The experimental results revealed that the maximum output power from the proposed thermoelectric generator was ~75 W, the calculated thermoelectric module efficiency of the TEG was ~2.1%, and the overall efficiency of electric power generation from the waste heat of the engine coolant was ~0.3% in the driving mode at 80 km/h. The conventional radiator can thus be replaced by the proposed TEG without additional devices or redesign of the engine water cooling system of the existing radiator.
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I bet they meant 'alternator'. But 75 Watt ain't enough.
But one could simply buy a liquid to liquid type generator: https://thermonamic.en.alibaba.com/p...EG600_48V.html
600 Watt, that's more like it. 48 Volt, ah well that needs a buck converter.
Pity it weighs 75 kilograms. No free lunch :/
__________________
2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.
Last edited by RedDevil; 10-04-2018 at 12:10 PM..
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