Comments on: What is the efficiency of refining petroleum? http://askalandman.com/what-is-the-efficiency-of-refining-petroleum.htm Questions and Answers Fri, 10 Feb 2012 00:02:05 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Gary H http://askalandman.com/what-is-the-efficiency-of-refining-petroleum.htm/comment-page-1#comment-2716 Gary H Fri, 07 Aug 2009 09:51:07 +0000 http://askalandman.com/what-is-the-efficiency-of-refining-petroleum.htm#comment-2716 In answering a previous question on automobile efficiency, I posted the following: [REPOST] The following lists efficiencies of both potential sources of energy in terms of converting to a form that a vehicle can use ("well to tank efficiency") and various types of vehicle propulsion systems possible ("tank to wheel efficiency"). "Tank to wheel" efficiency of common current vehicles is listed as being 22%. However, the well to tank efficiency for same is 88%. 22% of 88% equals a total efficiency of 19%. http://www.memagazine.org/mepower03/gauging/gauging.html This is a very interesting page. For example, all-electric vehicles are capable of running at 44% efficiency (this is almost the most efficient form of propulsion, a hybird Fisher-Tropsch diesel is the highest at 45%), but unfortunately, production of the electrical energy required to charge electric vehicles is only 48%, yielding total efficiency of 21% - though still slightly better than current vehicles, it's much less than I was aware of. In answering a previous question on automobile efficiency, I posted the following:

[REPOST] The following lists efficiencies of both potential sources of energy in terms of converting to a form that a vehicle can use ("well to tank efficiency") and various types of vehicle propulsion systems possible ("tank to wheel efficiency"). "Tank to wheel" efficiency of common current vehicles is listed as being 22%. However, the well to tank efficiency for same is 88%. 22% of 88% equals a total efficiency of 19%.

http://www.memagazine.org/mepower03/gauging/gauging.html

This is a very interesting page. For example, all-electric vehicles are capable of running at 44% efficiency (this is almost the most efficient form of propulsion, a hybird Fisher-Tropsch diesel is the highest at 45%), but unfortunately, production of the electrical energy required to charge electric vehicles is only 48%, yielding total efficiency of 21% – though still slightly better than current vehicles, it’s much less than I was aware of.

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