[SEL] Compressed Air Car? -- OT

[Peter Scales]

At room temperatures, air can't be liquefied by pressure alone.  The
critical temperature for air is -140C or -220F.  Above this temperature, air
remains a gas regardless of pressure.  At the critical temperature, air is
liquid at 573 psi or 39 bar.

Regards

     Pete
-- 
Peter Scales  

> -----Original Message-----
> From: sel-bounces at lists.stationary-engine.com 
> [mailto:sel-bounces at lists.stationary-engine.com] On Behalf Of 
> Listerdiesel
> Sent: 14 February 2008 20:06
> To: The SEL email discussion list
> Subject: Re: [SEL] Compressed Air Car? -- OT
> 
> On 14/02/2008, Best, George <George_Best at adp.com> wrote:
> > I was wondering what psi they used and found this:
> >
> >
> >  "Barring any last-minute design changes on the way to 
> production, the
> >  Air Car should be surprisingly practical. The US$12,700 
> CityCAT, one of
> >  a handful of planned Air Car models, can hit 68 mph and 
> has a range of
> >  125 miles. It will take only a few minutes for the CityCAT 
> to refuel at
> >  gas stations equipped with custom air compressor units; MDI says it
> >  should cost around $2 to fill the car's carbon-fiber tanks with 340
> >  liters of air at 4350 psi. Drivers will also be able to 
> plug into the
> >  electrical grid and use the car's built-in compressor to refill the
> >  tanks in about fours hours. "
> >
> >
> 
> What pressure does air liquefy at ??
> 
> See also:
> 
> http://www.technologyreview.com/Energy/20071/page2/
> 
> Peter
> -- 
> Peter A Forbes
> Email: listerdiesel at gmail.com
> http://www.oldengine.org/members/diesel
> http://stationary-engine.co.uk
> http://www.oldengine.co.uk
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