HA! Thanks Larry. From the link you provided: Nitrogen is a gas and is still affected by changes in ambient temperature (about one psi for every 10? Fahrenheit). Nitrogen filled tires will require pressure be added during the fall/winter months as ambient temperatures and tire pressures drop. Nitrogen is good but can't change the laws of physics.
So yes N2 does conform to the basic gas law pv=nrt. But why then do many folk report that there is less change with temperature? Either they are wrong, or something there?s something interesting here in its subtlety. One possibility would be that N2 is an insulator, thus changes temperature more slowly. But I?ve looked it up - and it appears to be almost exactly the same. So I?m baffled and asked... Cheers, Owen > On Sep 14, 2016, at 9:00 AM, krnet-request at list.krnet.org wrote: > > > Message: 7 > Date: Tue, 13 Sep 2016 17:14:15 -0500 > From: Larry Flesner <flesner at frontier.com <mailto:flesner at frontier.com>> > To: KRnet <krnet at list.krnet.org <mailto:krnet at list.krnet.org>> > Subject: Re: KR> Nitrogen > Message-ID: > <20160913221438.72666132194 at filter03.roch.ny.frontiernet.net > <mailto:20160913221438.72666132194 at filter03.roch.ny.frontiernet.net>> > Content-Type: text/plain; charset="iso-8859-1"; format=flowed > > At 01:40 PM 9/13/2016, you wrote: >> Yea, If nitrogen does not expand with >> temperature, why doesn???t nitrogen conform to the gas law pv=nrt? > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > It does expand and contract with temperature > changes just not as much as standard atmosphere. > > Everything you want to know about using nitrogen > in your tires can be found > at http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191 > <http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191> > > We often debate things on the net that can be > answered with a simple google search such as "why use nitrogen in tires". > > There is more information available today at the > touch of a button than can be digested in a lifetime. > > Larry Flesner
