PrecisionMachinisT writes:

Ignore the entire concept of latent heat if its convenient to you
then....

Haven't ignored anything.

(Regardless, I suspect you mean sensible heat.)

Point being is the heat was already added or subtrcated from the
sytstem before or after the phase change took place.

The heat initially present in the water itself, or something intimately
in contact with it, will vaporize very little water, and in practice the
ambient heat will not flow in quickly (the vacuum being an insulator).

And this only applies to free water. Ordinary vacuum dessication does
not work for water bound in something like a silica gel dessicant, or
entrained in the oil, or hydrating contaminants.

A lot of people have been taught the pseudo-scientific myth that "water
boils in a vacuum" in some magic sense that it doesn't in the
atmosphere. The truth is that water vaporizes in a vacuum or in the
atmosphere the same way: *only* because you add heat. In the same
sense, water doesn't boil at 212 deg F, it boils because you add more
heat after it is at 212 deg F.

Another related myth is that if *you* were put into a vacuum, your body
would explode or your "blood would boil". Pure bunk.

Another popular (and yes, even in the HVAC trade) myth is "saturation"
of air with humidity, that the moisture is carried or dissolved in the
air, and that it "saturates" like a solution of salt in water.