232 
Sec. 10 -21- Eq. 58-65 
a Yor +1) \f noRta;/ Yay M 
f. Formulation for cases A and B. For the special classes of compounds 
(A and B) mentioned in Sec. 9b, the heat capacity coefficients and the heats 
of formation of the products can be introduced numerically into the above 
equations, yielding the following formulas. 
ae os Hf, - 30,5000+917r+59, 0558+957+ (58) 
Tai = (1.86042. 05r+2.959+2.37t) + (-0,0lg+0.15r+0.258+0.11t).10-> 7, 
q+r/2<s 
Hig - 40, 72q-b, 2184-69, 2h98+957¢ (59) 
To4 = (0,26a61.06r¢ 4.55842.57t) + (0. 0lg+0. 15r+0.258+0.11t).10 Toy 
For both cases the equivalent of Eq. (47) becomes: 
Yort 1 /t/e+rfe+a 
St 
PL = Tye, | Gearericenme 89? Yeite1.10?) 10 Bleesibain She) 
ei 
10. Calculation of D/D, 
a. General Equations. In order to calculate D when the burnt gases 
are imperfect, the analysis of Sec. 6 must be repeated in some general form, 
From pure thermodynamics we obtain the relation 
/ 
=) a co Gay Gat & Bae ¥( ay Kee 
From the equation of state 
PV = nRT (1+ xeP*) / (62) 
with x = K/wT™ , 
one obtains the result 
aP 
a =e (6) 
where F = l+xe Gx , (64) 
and y = Were PX 4 @x2eP* ~ mx(ar/ax). (65) 
