thank god it is "probably".
I am relying on one or two improvements to boost efficiency or "COP"
one is to use the vacuum resulting from the condensing vapor in the heat exchanger
to pull water vapor from the tank without further use of vacuum pump.
I know when an idea is so simple and not used, 99% of the time I am missing something
but I will try to make it with my friend this week, and post the results here.