f8db9e8b   
   From: MyNameForward@ReplaceWithMyVices.Com.invalid   
      
   Sometimes complexity is needed to keep things simple.   
   The storage tank can accept heat when the stove puts it out, and   
   distribute it when needed. An expansion tank is needed on any   
   closed-loop system. The only way you could hope to avoid pumps would be   
   to move the fire downstairs (evidently into a boat at your site as   
   described - or make it a two-story cabin.) Even then thermosyphoning to   
   a whole floor is tricky to engineer and may involve very large (and   
   expensive) pipes.   
      
   As for getting the heat in the first place, the greater the temperature   
   difference, the smaller the heat exchanger can be for the same output.   
   Getting useful heat from "warm walls" is a lot harder than from a hot   
   stove.   
      
   --   
   Cats, coffee, chocolate...vices to live by   
   Please don't feed the trolls. Killfile and ignore them so they will go away.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)