Wedgy
Well-Known Member
- Joined
- Feb 9, 2013
- Messages
- 3,276
If you cool the outside of the barrel by liquid(conduction) the differential will be minimal by the time two temps meet and if you're cooling the barrel interior with air(convection) it doesn't have enough specific heat capacity to change the temp of the barrel. Basically all you're doing is drawing the heat away like a liquid cooled engine circulating water thru an engine block.