Exploring the Benefits of Annular Rectangular Rib for Enhancing Thermal Efficiency of Nonpremixed Micro-Combustor

Table 2

Chemical reaction mechanism of H/air combustion.

Reactions	Ak (m^3/(kmol s))	βk	Ek (J/kmol)
1. O2 + H = O + OH	3.55 × 10^12	−0.4	6.945 × 10^7
2. O + H2 = H + OH	50.8	2.7	2.632 × 10^7
3. H2 + OH = H2O + H	2.16 × 10^5	1.5	1.435 × 10^7
4. O + H2O = 2OH	2970	2	5.607 × 10^7
5. H2 = 2H	4.58 × 10^16	−1.4	4.351 × 10^8
6. 2O = O2	6.16 × 10^9	−0.5	0
7. O + H = OH	4.71 × 10^12	−1	0
8. H + OH = H2O	3.8 × 10^16	−2	0
9. H + O2 = HO2	1.48 × 10^9	0.6	0
10. HO2 + H = H2 + O2	1.66 × 10^10	0	3.443 × 10^6
11. HO2 + H = 2OH	7.08 × 10^10	0	1.234 × 10^6
12. HO2 + O = O2 + OH	3.25 × 10^10	0	0
13. HO2 + OH = H2O + O2	2.89 × 10^10	0	−2.08 × 10^6
14. 2HO2 = H2O2 + O2	4.2 × 10^11	0	5.021 × 10^7
15. H2O2 = 2OH	2.95 × 10^14	0	2.025 × 10^8
16. H2O2 + H = H2O + OH	2.41 × 10^10	0	1.661 × 10^7
17. H2O2 + H = HO2 + H2	4.82 × 10^10	0	3.326 × 10^7
18. H2O2 + O = OH + HO2	9550	2	1.661 × 10^7
19.  H2O2 + OH = HO2 + H2O	1 × 10^9	0	0

Note: A_k is the preexponential factor of reaction rate, β_k is the temperature exponent, and E_k is the activation energy of the reaction.