This is a teaser question that I have to ask the commercial
sailors not to answer.
On our boats we use watermakers to push at high pressure, sea water
through a number of membranes. It uses a fair amount of electrical
energy to produce potable water
. On commercial
vessels, the wasted heat energy from the engine(s) at 180* F is used to boil sea water and collect the distillate via condensation
, thus producing potable water.
The teaser question is how they manage to boil water at 180*F?