Thanks. Here it is, Honda Rankine Cycle -click 1/3? And the rest. Having ancillaries all electric, then this would be feasible if sized properly. But it gets complicated. BMW claimed 20% better fuel consumption, by elimination of parasitic engine loses.Sounds like a solid state approach, similar to the Rankine cycle approach Honda is testing:
1/3 of the energy created in combustion goes out the tail pipe and radiator, so capturing any / all that heat for other uses is a good idea.
So if this Rankine unit was coupled to say the Lotus range extender. more mpg would be had.
Absorption a/c units can run off waste exhaust heat. I believe Cadillac were using one.