بسم الله الرحمن الرحيم
السلام عليكم ورحمة الله وبركاتة
أرجو من المهندسين مساعدتي في الحل
السلام عليكم ورحمة الله وبركاتة
أرجو من المهندسين مساعدتي في الحل
Problem 1Using the CHEMKIN spreadsheet to calculate the flame temperatures of the premixed mixture CH4 –air (initial temperature set as 298.15K) with equivalence ratio φ = 0.5, 1.0 and 1.5.
Problem 2
A mixture of hydrogen and air initially at 25°C and 1 atm pressure is burned in a constant-pressure adiabatic process in which the adiabatic flame temperature is 2,800K. Assuming complete combustion in all calculations determine (a) volume of products to the volume of reactants; (b) molar AF ratio, kmol air/kmol fuel; (c) excess air required, %; and (d) equivalence ratio for the process.
Problem 3
, Calculate the enthalpy, entropy, Gibbs function G and Helmhotz function A for
the following species at pressures between 5 – 20 atms and temperatures between 500 K –
1500 K with the temperature step of 10 K. (using the spreadsheet, using the real gas formula)
C(s)/graphite
CH4
CH3OH
C2H4
C4H10/therm
C4H10/pitz
CO
CO2
H2
HCl
H2O
H2O(l)
N2
O2
CH3
OH
C2H2
HCN
Problem 2
A mixture of hydrogen and air initially at 25°C and 1 atm pressure is burned in a constant-pressure adiabatic process in which the adiabatic flame temperature is 2,800K. Assuming complete combustion in all calculations determine (a) volume of products to the volume of reactants; (b) molar AF ratio, kmol air/kmol fuel; (c) excess air required, %; and (d) equivalence ratio for the process.
Problem 3
, Calculate the enthalpy, entropy, Gibbs function G and Helmhotz function A for
the following species at pressures between 5 – 20 atms and temperatures between 500 K –
1500 K with the temperature step of 10 K. (using the spreadsheet, using the real gas formula)
C(s)/graphite
CH4
CH3OH
C2H4
C4H10/therm
C4H10/pitz
CO
CO2
H2
HCl
H2O
H2O(l)
N2
O2
CH3
OH
C2H2
HCN