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I need help on the following questions and their answers to see if my reasoning is correct Methane (CH4) burns with air with liquid water
I need help on the following questions and their answers to see if my reasoning is correct
Methane (CH4) burns with air with liquid water added to the reactants. Methane, air, and liquid water are all admitted at a temperature of T=300K with pressure of =1atm. The chemical reaction used to describe this process is given by the following (Only the major product species for eonditions of interest are shown here for brevity): CH4+a(O2+3.76N2)+xwH2O(l)bCH4+cH2O(l)+dH2O(g)+eCO2+fCO+gH2+OO2+kN2 where the number of moles of water added per mole of methane to the reactant side (xw) is determined using a parameter called the water mass loading ratio, which is defined as the mass flow rate of liquid water per unit mass flow rate of methane on the reactant side: mSjO(i)/mG5. Ihe loading ratio will serve to compute the number of moles of liquid water added to the reactants per mole fuel as per the following relation: water may be present in the products for high values of xw and for low temperatures, the latter being determined by conservation of energy assuming complete combustion of methane for fuel lean conditions and complele combustion of oxygen for fuel rich conditions with no heat or work interactions. You will need to use an equilibrimm computation program like the one in CANTERA or the one in CHEMKIN both of which have been introduced to you in the class. You may choose to use another program like the NASA CEC or EES or MATLAB. However, please note that the program should be designed for the solution of stiff. coupled. nonlinear equations involving multiple variables. You mag also need to make a few clever choices in defining the reactants and the products for the cases involving liquid water in the reactants and especially for cases involving liquid water in the products. a. Limiting the product species to those shown above and further assuming that the liquid water and the water vapor exist in phase equilibrium and that the ratio of moles of CO2 times the moles of H2 divided by the moles of CO times the moles of H2O obey the equilibrium of the water gas shift reaction: CO2+H2CO+H2O(g), find the temperature and the product species concentrations for equivalence ratios of =0.0,0.6,1.0,1.2, and and water mass humid fuel and liquid water mixtures for the mb1ql/mc1=1 and 3 cases. b. Please prepare graphs showing the following variables (from a above) as a function of equivalence ratio (use a linear scale on the Y axis and a log scale on the X axis with breaks diseontinuitics in the X axis to show the results for =0.0 and = ): (i) Product temperature (TFd,K) (ii) Major product mole fractions (where Z:>0.1 ) (iii) Intermediate product mole fractions (where 0.01Step by Step Solution
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