- #36
Andy86
- 47
- 2
That's the incorrect number of total mols in the mix, total ,mols is 33.8 > 34 Mols
Chestermiller said:OK. So 2580/33.8=76.3 kJ/mole
The volume per mole is 0.0245 m^3/mole
So, 76.3/0.0245 = 3115 kJ/m^3 of fuel mixture = 3.12 MJ/m^3 of fuel mixture
The stream is diluted by a factor of 33,9Andy86 said:It doesn't look right that the CV is 3.12 MJ / m^3 as the gross CV is 108.1 MJ M^3, my calculated NET CV of 103.2 MJ M^3 looks more realistic?
Chestermiller said:The stream is diluted by a factor of 33,9
You have 1 mole of actual fuel and 32,9 mioles of nitrogen and oxygen that dilute the heating value. Just take your 100MJ and divide by 33.9. What do you get?Andy86 said:Meaning?
Pretty close, huh?Andy86 said:NET CV BY VOL = 103.2MJ / M^-3
103.2 / 33.8 = 3.05MJ / M^-3
You're going in a circle. You already had the CV per mole.Andy86 said:VERY! :-)
So.....
NET CV BY MASS
n = PV / RT = 100000 * 1 / 8.314 * 298 = 40.3 MOL = 0.0403 KMOL
CV = MK M^-3 / KMOL
= 3.05 MJ M^-3 / 0.0403 KMOL
= 75.6 MJ KMOL^-1
?
You're going in a circle. You already had the CV per mole.Andy86 said:VERY! :-)
So.....
NET CV BY MASS
n = PV / RT = 100000 * 1 / 8.314 * 298 = 40.3 MOL = 0.0403 KMOL
CV = MK M^-3 / KMOL
= 3.05 MJ M^-3 / 0.0403 KMOL
= 75.6 MJ KMOL^-1
?