Spirit Stills and Reboilers?

[J. Stephen Lure]

Hi Ralph,
  
The temperature of a liquid or a gas is a mean value. Some molecules are hotter (faster) and
some colder (slower). Shouldn’t this fact make it possible to reach higher temperatures
“downstream”? And couldn’t the condensing process in the reboiler provide the heat for distillation
of the lighter fractions? (It was more than 20 years since I studied thermodynamics, so most of
that knowledge has unfortunately become entropy.)
  
Regarding thumper/doubler – I’ve read somewhere that it (on an average) raises the abv. with
five percentage points.
  
Cheers,
JESPER
  
“From the point of view of common-sense if a still is heated to cause boiling evaporation the
temperature of the vapor coming off is the same as the temperature at which the liquid is
boiling. Nothing in the downstream heat-exchange chain can ever get to a higher temperature
unless heated by another heat supply at higher temperature (excluding discussion of vacuums or
rapid volume compression here) [...].
  
/Ralph

 		
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