shortonoil wrote:The exergy content (which is what the EIA publishes) of a liquid hydrocarbon is a property of its molecular structure. It is directly proportional to its API gravity:
http://www.thehillsgroup.org/depletion2_011.htm
According to EIA data, between 2000 and 2005 the average barrel of oil that was processed through US refineries had an API gravity of 35.7°. 35.7° API crude is the standard that we use in our report. 35.7° API crude has an energy content of 140,000 BTU per gallon, or 5.88 million BTU per barrel. In actuality it is 140,075 BTU per gallon, but to make things easier, and the error is very small, we round. Since 2009 the average API of oil processed in US refineries has risen to 39.2°. Which has an exergy of 137,810 BTU/ gallon, or a decline of about 92,000 BTU per barrel. This increase in API gravity has resulted in a 450,000 BTU per barrel decline in the energy delivered to the end user. That is explained further on this page:
http://www.thehillsgroup.org/depletion2_019.htm
Our "Commentaries" sections can help walk the reader through the development of the Etp energy Model.
http://www.thehillsgroup.org/
shortonoil wrote:According to EIA data,
The barrel of oil equivalent (BOE) is a unit of energy ...
shortonoil wrote:Note the 5.88 million BTU per barrel reference from the IRS above.
The volumetric input is of no significances without a corresponding energy metric.
Pops wrote:shortonoil wrote:Note the 5.88 million BTU per barrel reference from the IRS above.
I see no link
Pops wrote:Nah, short is going to come up with an actual link to something other than himself and prove his model real soon now.
...
I thought I'd help and googled up one link
It even starts out "Thanks Pops." LOL
http://www.sciforums.com/threads/the-et ... ed.152487/
SugarSeam wrote:The cynicism on this site is its own paradox.
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