John Steck wrote:
> Of course making the general assumption that the mass of 10k batteries > (approx 570lbs) would have no impact on performance... > > To truly compare apples to apples I think a new unit of measure is required. > It's always nice to frame things in familiar terms, but there are too many > variables that need to be considered to do that in this case. > > How about: > (energy density / work) / (pollution quotient) = Clean Work per Hour (CWPH) > > ED = energy potential of the fuel relative to weight & volume > W = power transfer efficiency per hour of typical operation > PQ = the sum of defined negative byproducts from origin to point source > > With this unit you should be able to reasonably compare the space shuttle to > a Prius... 8^) Except for the pollution quotient, doesn't this dimensionally reduce to 1/weight*volume ? Harry
