The question applies to the system alone and in concert with the engine. Basically what I am really trying to get at is the interpretation of how the system works.
Personally I believe that the 80% recovered heat is used to power the steam system which in itself is not going to be more than 40% efficient. Given this interpretation one can calculate the total heat lost in the exhaust which is approaching roughly 50%.
However revetec has a very different interpretation that leads to a total heat loss through the exhaust of only 18%
Power, whether measured as HP, PS, or KW is what accelerates cars and gets it up to top speed. Power also determines how far you take a wall when you hit it
Engine torque is an illusion.