In a message dated 8/26/2006 8:11:09 P.M. Eastern Daylight Time, [EMAIL PROTECTED] writes:
Then, I wonder what the exact mechanisim is on using Nitrogen to have less pressure change and less leakage. Any gas will change pressure over temperature. Why would pure N2 change less than an air mix which is about 2/3 Nitrogen anyway? Or is it the lower water H2O vapor content in N2? As far as leakage, the gas molecules would have to be larger in order to leak out less easily. It's a combination of the effects you mention. 1 - Water vapor - any dry gas will work better than regular air with water vapor. As the vapor condenses, the pressure drops, and as the temperature rises, the pressure increases radically. Since there is a state change involved, it doesn't follow the ideal gas law (PV=nRT) 2 - Nitrogen is effectively inert for our purposes, while O2 and H2 are reactive, along with some of the other oddball compounds in generic air. 3 - N2 is a larger molecule than H2, CO, or He. ________________________________ FormulaCar Magazine - A Proud Supporter of Formula 500 The Official Publication of Junior Formula Car Racing Subscribe Today! www.formulacarmag.com or 519-624-2003 _________________________________ _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! ***
