T_in 523[K] Inlet temperature T_amb 350[K] Ambient temperature rad 2[mm] Channel radius A pi*rad^2 Channel cross section area v_av 0.3[m/s] Average gas velocity UA 200[W/(K*m^3)] Volumetric heat transfer coefficient F_NO_in 1.55e-7[mol/s] Inlet molar flow NO F_NH3_in F_NO_in*X0 Inlet molar flow NH3 X0 1 Ratio NH3 to NO at inlet F_O2_in 2.71e-6[mol/s] Inlet molar flow O2 F_N2_in 6.86e-5[mol/s] Inlet molar flow N2 F_H2O_in 7.34e-6[mol/s][mol/s] Inlet molar flow H2O