Stephen
If there are violations of the second law waiting to be employed, I
think we can be reasonably sure they won't use either heat pumps or heat
engines as their "prime movers".
Not to put words in anyone's mouth, but I think what you meant to say was:
"If there are violations of the second law waiting to be employed, I
think we can be reasonably sure they must employ an operational
methodology which may benefit from - but does not depend solely on - the
physics of heat pumps or heat engines as the "prime mover".
Jones
And even then, as many have posters have been stating for years, it
would be wise to leave the LoT completely out of these discussions, as
there are too many ways in which those laws can be interpreted (or
salvaged) for them to be meaningful in any helpful way to an experimenter.
Like you-know-who - they are what they are - but can NEVER really be
invalidated, as they are re-interpretable in so many semantic ways.