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Originally Posted by P-Hack
]well biodiesel is in it's infancy as are other "solar to something besides electricity, hopefully with much beter energy density" options too, but thinking electricity is "pure" is part of the problem, the sort of religious aspect of electric at times. So comparing an electric motor efficiency to a liquid fueled motor borders on pointless.
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The bio options for solar energy conversion are orders of magnitude less efficient than than the non bio options ... and so far the science to date shows absolutely no signs of that situation ever being able to reverse.
But ... I will agree ... a larger point of view is useful / preferred.
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Originally Posted by P-hack
But use a liqud (or coal, or biomas I don't care) powered generator to drive an EV and we have a basis for comparison, i.e. how well could that fuel move the vehicle without the generator/converter/controller/motor in the way?
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I would add on
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Understanding under what situations / conditions do those additional steps actually result in a net improvement in overall vehicle operating efficiency... and is thus ... not in the way at all.
Similar to how hybrids ... be they series , parralel , electric , hydraulic , etc ... they have shown , that ... under some situations and conditions ... the path even with additional conversion steps ... can result in net improvement in vehicle operating efficiency... and performance.
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Understanding the pros and cons of the options ... allows one to be able to make a more informed decision about which one would be best ... for any one specific situation.
Removing the additional step path ... is not ... always ... the most efficient .. or best performing option.