> Nitrogen doesn't react to heat and cold, ergo, the psi remains constant.
>
I don't believe this is true. Nitrogen is a gas and at the kinds of
pressures we are talking about it can be considered an ideal gas, with
pressure, temperature and volume expressed according to the relationship:
pV = NRT
where p is the absolute pressure, (lbs/sq ft), V is the volume of gas (cu
ft), N is the number of Moles of gas, R is the universal gas constant and T
is the absolute temperature, degR. In that air is about 79% Nitrogen, I
would expect Nitrogen to behave very similarly to air regarding pressure
changes due to temperature differences.
Mike
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