To good approximation, the thermal conductivity k of a gasdepends only on the density ρ ,mean free path l , gas constant R , and absolute temperatureT . For air at 20 8 C and 1 atm, k ≈0.026 W/(m.K) and l ≈6.5 E-8 m. Use this information to determine k for hydrogenat 20 ° C and 1 atm if l ≈ 1.2 E-7 m.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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To good approximation, the thermal conductivity k of a gas
depends only on the density ρ ,
mean free path l , gas constant R , and absolute temperature
T . For air at 20 8 C and 1 atm, k ≈0.026 W/(m.K) and l ≈
6.5 E-8 m. Use this information to determine k for hydrogen
at 20 ° C and 1 atm if l ≈ 1.2 E-7 m.

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