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Strategies & Market Trends : The Residential Real Estate Crash Index
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To: Aggie who wrote (169816)12/8/2008 3:33:17 PM
From: Peter VRead Replies (1) of 306849
 
Your second question does not completely follow the first. Elroy is right, gasoline is about 18 percent less dense than diesel, so gasoline yields more VOLUME from the crude than diesel. (the more complex answer includes a discussion of shorter molecular chains produced by cracking and other boring stuff so that volume actually increases during refining).

CONSUMPTION, on the other hand, is affected by many things, including the amount of energy stored in a given volume.

Diesel fuel has a higher energy density than gasoline. On average, 1 gallon (3.8 L) of diesel fuel contains approximately 155x106 joules (147,000 BTU), while 1 gallon of gasoline contains 132x106 joules (125,000 BTU). This, combined with the improved efficiency of diesel engines, explains why diesel engines get better mileage than equivalent gasoline engines.

I don't know how the volume and energy calculations play out, whether the increase in volume for gasoline is overcome by the extra energy contained in diesel.
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