EFFECT OF DEGREE OF FUEL VAPORIZATION UPON EMISSIONS FOR A PREMIXED PARTIALLY VAPORIZED COMBUSTION SYSTEM

摘要

An experimental and analytical study of the combustion of "partially" vaporized fuel/air mixtures was performed to assess the impact of the degree of fuel vaporization upon emissions for a premixing-prevaporizing flametube combustor. Tests were con¬ducted at an inlet air pressure of 0. 3 MPa, inlet air temperatures of 600 and 700 K, a reference velocity of 35 meters per second, and equivalence ratios of 0.60 and 0.72 using Jet A fuel. The degree of vaporization was varied from 72 to 100 percent vapor¬ized.nThe data collected in this study display an effect of vaporization upon NO emissions which differs with equivalence ratio. For an equivalence ratio of 0.60, decreas¬ing the degree of vaporization increases the NOx emission index. The increases were nearly linear functions of the degree of vaporization. For equivalence ratios of 0.72, the degree of vaporization had very little impact on the NO emissions.