Heh, there is a concept by BMW where this rather low grade heat is captured by generating steam, and used for additional power :D
It is called steam assist: http://www.greencarcongress.com/2005/12/bmw_developing_.html bob allen wrote: > Gary L. Green wrote: > > Over 60% lost as heat. Should be some way of recovering that energy. > > hydroponic gardening in your back seat? > > mobile clothes drier? > > the problem is the energy is low grade, Ie, delta T is low, making the > extraction of useful work difficult. > > Combined cycle gas turbines can extract some useful work (I think > they're up to 55 to 60 percent efficient-only waste 40%) because the > exhaust gas from the turbine is hot enough to generate steam. > > > -- Tomas Juknevicius _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
