Of course, put that many TEGs on the cooling system and you are turning so much coolant heat into electricity that the cooling effect on the engine could adversely effect fuel economy by keeping the engine quite a bit colder than desgined. You'd need to adapt the radiator size, too, I think. More cost. Better to stick to exhaust waste heat.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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