I'll let someone else columnize and tabulate your numbers, but Fuller looked at overall efficiency (not thermal efficiency), found it to be ~4% and suggested doubling that to 10%:
Quote:
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Originally Posted by DDG
Tensegrity - The Geometry of Thinking - R. Buckminster Fuller
https://www.bfi.org/about-fuller/big...metry-thinking
With the majority of humanity understanding its science and technology, an overall efficiency of 10% may be obtained. At a now technically accomplishable overall efficiency of 10%, all humanity can be living and enjoying whole Earth at a continuously sustainable level, higher than any human beings heretofore ever experienced or dreamt. |
That was in the 1960s so we may be at 10% or so now. He wasn't looking at just thermal efficiency, but also things like cars idling at stop lights. Which might otherwise fall through the cracks.