메탄-수소 혼합 연료의 열화학적 특성 분석 (2) - 저 수소 분율

Hydrogen was mixed with methane and standard city gas at a fraction of 30 % or lower, and the exhaust composition and dry and wet exhaust characteristics according to the mixing ratio were obtained through thermochemical analysis; the following conclusions were obtained. The gradient of increase or decrease of carbon dioxide and carbon monoxide according to the equivalence ratio varies depending on the mal-distribution, and thus, there is a pivot point for the production amount at an equivalence ratio of approximately 1.15. However, due to the nonlinear relationship between the exhaust components based on the chemical equilibrium constant, a particular exhaust composition without a pivot point exists in a very narrow mixing ratio range with HCR of 4.6453 to 4.6600. The exhaust amount according to the equivalence ratio is most affected by the mal-distribution in the theoretical equivalence ratio, and the dry exhaust gas varies significantly depending on the mal-distribution; however, the wet gas is not affected significantly by the mal-distribution. The wet gas amount, which is a working fluid, increases per unit of air regardless of the mal-distribution; however, the amount of per-unit fuel decreases in the form of a power law as the equivalence ratio increases.