Just a quick casual Friday post. Found this Sankey diagram from a Czech website in my bookmarks.
It shows that in a cogeneration unit with recovery of heat energy from engine water cooling and exhaust gas cooling, an overall efficiency of 85,4% can be achieved, and losses can be reduced to 14,6%.
Don’t ask me what the accompanying text means, I just understand that ‘Kogenerace’ is ‘cogeneration’. Note Nov 2011: I noticed that after an update the original page with the image is not available any more on motorgaz.cz