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From: david.williams@bayman.org (David Williams)
Date: Sunday, March 16, 2008 6:05 PM
Subject: Re: Business Week: Air-Powered Green Car in U.S. in 2010
From: david.williams@bayman.org (David Williams)
Date: Sunday, March 16, 2008 6:05 PM
Subject: Re: Business Week: Air-Powered Green Car in U.S. in 2010
-> You could not use caves to store at a pressure of hundreds of atmospheres ne
-> piston-type air motor as proposed for the MDI car. The rock formation would
-> fracture, and the air would bleed off.
About 3 metres of rock exerts a pressure of 1 atmosphere. A kilometre
deep, the pressure is about 300 atmospheres. Putting 300 atm. of air
into a cave down there would just about equalize the pressure in the
rock, and there would be no tendency for it to fracture. Plenty of
mines go more than a kilometre deep.
dow
