Module 2: Combustion and heat utilization
  Lecture 11:Energy and Environment
 

contd....

Now calculate theoretical (stoichiometric) amount of air. Remember theoretical amount of air is calculated on the basis of complete combustion; for the following combustion reactions;

 
(3)
                                    
(4)
                                  
(5)


Percent excess air  =  100(Actual oxygen  − theoretical oxygen)/ theoretical oxygen
Substituting the values we get
Percent excess air 38.33%.

ii) Volume of air at NTP: 

Note that the air is mosit so we have to find the composition of moist air by using Dalton’s law which is

 but

iii) Total volume of POC

Total volume of POC =   12.148 m3 at 0oC and 760 mm Hg and 13.482 m3 at 20oC and 735 mm Hg

and and

                                       and .