<VV> CNG Vehicles (no corvair)

[jvhroberts at aol.com]

 CNG is great stuff for commercial transportation, where they have the room for the tanks, like buses and trucks. Given the relatively high consumption of those vehicles, they are clearly the low hanging fruit. Cars are far more challenging. Heck, given the state of the art today, I don't even see any particular advantage of propane over gasoline! 

 

John Roberts
 

 

-----Original Message-----
From: dennis dorogi <dfamily at fairpoint.net>
To: John Kepler <jekepler at amplex.net>; 'Matt Nall' <patiomatt at aol.com>; virtualvairs at corvair.org
Sent: Tue, Nov 24, 2009 10:26 am
Subject: Re: <VV> CNG Vehicles (no corvair)


I was nine years old in 1944 when Cleveland "blew up".  It was a major 
disaster.   See 
http://en.wikipedia.org/wiki/Cleveland_East_Ohio_Gas_Explosion  if 
interested.

Dennis Dorogi
----- Original Message ----- 
From: "John Kepler" <jekepler at amplex.net>
To: "'Matt Nall'" <patiomatt at aol.com>; <virtualvairs at corvair.org>
Sent: Tuesday, November 24, 2009 5:54 AM
Subject: Re: <VV> CNG Vehicles (no corvair)


>
>
>
>
> I guess if I did, I'd know what "CNG" is ? ... ggg
>  Compressed Natural Gas  @ 2500 psi for cars...
>
>
> vs  LNG   Liquidfied NG   no pressure.. frozen  - 260F!     but when it
> thaws..it expands...  600 to 1  ratio!
>
>
> And you missed some of the other little "attributes" of LNG, like shock
> sensitivity, tendency to spontaneously detonate, and general instability.
> Methane is one of those strange materials that gets progressively UNSTABLE
> as a cryogenic liquid.  When I was at Air Products, the failure analysis 
> of
> a "problem" with 5-flask LNG carrier gave a yield about the same as a
> tactical nuclear device!  Ask anyone alive and living in Cleveland, Ohio 
> in
> 1944 just how much "fun" LNG is, and why you don't want ANY of it driving
> around a neighborhood near you!
>
>
>
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