[marktwain]

I posted in haste. Iregret at leisure. I should have read more carefully.

But you get some vapor with even ambient temperatures. So the energy does not all have to come from external heat sources.

[TexasGator]

“But you get some vapor with even ambient temperatures. So the energy does not all have to come from external heat sources”

True. Evaporation can draw on internal heat cooling the liquid.