The thermal conductivity of hydrocarbon gases at normal pressures

✍ Scribed by Dragoslav Misic; George Thodos

• Publisher: American Institute of Chemical Engineers
• Year: 1961
• Tongue: English
• Weight: 392 KB
• Volume: 7
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690070219

✦ Synopsis

Dimensional analysis has been applied for the correlation of the thermal conductivity of a gas to its temperature, molecular weight, heat capacity, and critical constants. This approach indicates that the group k*h/C, should be a function of zc and T,, where h = M1/aT,1/E/Poa/3.

Experimental thermal conductivities of hydrocarbons a t normal pressures (approximately 0.2 to 5 atm.) have been used to develop two relationships. The first is applicable to all types of hydrocarbons for 0.6 < T R < 3.0 with the exception of methane ond the cyclic hydrocarbons below TR = 1.0, for which the other relationship is applicable. These two relationships have been used to calculate thermal conductivities for twenty-eight gaseous hydrocarbons for which experimental data are available. Calculated values for normal paraffins, isoparaffins, olefins, diolefins, acetylenes, naphthenes, and aromatics produce an average deviation of 2.4% from experimental values for 154 points considered.