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[Chris Haslego]

-------------Original Message--------------
I am attempting to understand the heat generation problem during the compression of nitrogen. Is this problem attributable to the heat capacity ratio (1.4) of nitrogen? (If so, how does the heat capacity ratio increase with increasing pressure?)


--------------Response----------------------

The compression of any gas results in raising the temperature of the gas ... this is not unique to nitrogen. The adiabatic compression of a gas follows this equation:

T2 / T1 = (P2 / P1) ^{(k -1) / k}

where: k = the heat capacity ratio

I would also point out that many gases have a heat capacity ratio
in the range of 1.3 to 1.4 ... again this is not unique to nitrogen.

Hope this helps,

Milton Beychok
(Visit me at www.air-dispersion.com)