Elementary Principles 422 - 9.58 b. Basis : 1 mol fuel...

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9- 70 9.58 b. c. Basis : 1 mol fuel gas/s (mol O ) 3.76 (mol N ) Stack gas, ( C) ( C) (mol O s) 3.76 (mol N s) 1 mol / s @ 25 C (mol CO s) (mol CH mol) (mol CO s) (mol Ar mol) (mol H O s) (1 ) (mol C H (mol Ar s) 2 2 o o O2 02 o CO 4C O 2 HO 2 2A r 2 2 6 ± ± ± / ± / ± / / ± / / ± / / ± / ns T Tn n n xr n xn xx n s a m a ma 0 0 −− CH O CO H O CH O 42 22 26 2 2 2 + + +→+ 23 7 2 Percent excess air C balance: H balance: 4 O balance: 2 xs CO CO OC O C O H O O C O 2 : ± () . ( ) ( ) ±± ±±± ± / ± n P x n n x r x n n x nnn r nn n r mm a a a a a 0 00 1 100 5 1 21 1 1 61 2 2 31 1 2 2 =+ + − − +−− = + = + = = + +⇒ = + n 2 /2 References : C(s), H 2 (g), O 2 (g), N 2 (g) at 25 ° C Substance CH A O N3 . 7 6 CO CO 4 A 2O 2 CO 2C O 2H O 2 2 nH x H n H rn H in in out out m mA A o oo ²² ² . ² ² ² 0 10 0 376 3 14 25 6 7 8 ² ( ² ) , HH C d T ii p i TT as B z Δ f Table B.2 or 25 Given : , C C 0.0955, (kJ / mol) = 8.091, = 29.588, = 0.702, = 3.279, = 166.72, = = 345.35, = 433
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