... in the present study. 04 07 2011 04 07 2011 01 02 2012 01 02 2012 chemiluminescence flames fuel hydrogen nitrogen compounds Modern premixed gas turbine combustors are usually operated at lean operating conditions for lowering combustion temperature and reducing...

...Hao Zhang; Xiaoyu Zhang; Min Zhu In this study, a combustion facility was constructed that includes a flexible fuel supply system to produce synthesis gas using a maximum of three components. The rig with lean premixed burner is able to operate at up to five bars. The length of the inlet plenum...

...Chitralkumar V. Naik; Karthik V. Puduppakkam; Ellen Meeks Accurate chemistry models are required to predict the combustion behavior of different fuels, such as synthetic gaseous fuels and liquid jet fuels. A detailed reaction mechanism contains chemistry for all the molecular components in the fuel...

... charge compression ignition (HCCI) engine fueled with n-heptane. The engine was operated with four fuel blends containing up to 50% iso-octane by liquid volume at 900 rpm, 50:1 air-to-fuel ratio, no exhaust gas recirculation, and an intake mixture temperature of 30 ° C . A detailed analysis...

...Bryan Li; Mike J. Gross; Thomas P. Schmitt Gas turbine thermal performance is dependent on many external conditions, including fuel gas composition. Measured performance must be corrected to specified reference conditions prior to comparison against performance specifications. A performance...

..., a channel inlet temperature of 350 ° C , and an outlet temperature of 625 ° C . The sheath material and nuclear fuel must be able to withstand these extreme conditions. In general, the primary choice for the sheath is a zirconium alloy and the fuel is an enriched uranium dioxide ( UO 2 ) . The sheath...

... characteristics was analyzed. Based on the analysis, the chemical capabilities of surrogate models are not linked to their abilities to reflect the phase-equilibrium properties of real fuel. It is shown that model design of practical fuels must include the phase-equilibrium and distillation curve calculations...

... fuel mixtures of methane/ethane and methane/propane, and ternary mixtures of methane/ethane/propane. The effect of CO 2 addition to the methane-based fuel blends on autoignition delay times was also investigated. Equivalence ratios for the experiments ranged between 0.5 and 1.25, and temperatures...

...R. R. Rachedi; L. C. Crook; P. E. Sojka An experimental investigation was conducted to examine the behavior of swirling supercritical hydrocarbon fuel (SCF) jets injected into nitrogen environments whose temperatures and pressures exceeded the fuel critical values. Measurements of jet full-cone...

...Shiyou Yang; Rolf D. Reitz A continuous multicomponent fuel flame propagation and chemical kinetics model has been developed. In the multicomponent fuel model, the theory of continuous thermodynamics was used to model the properties and composition of fuels such as gasoline. The difference between...

...Hailin Li; Ghazi A. Karim; A. Sohrabi The knock and combustion characteristics of CO, H 2 , CH 4 , and their mixtures were determined experimentally in a variable compression ratio spark ignition (SI) cooperative fuel research (CFR) engine. The significant effects of gaseous fuel mixtures...

..., Paper No. GT2006-90072 ) and technical ( Brückner-Kalb, Napravnik, Hirsch, and Sattelmayer, 2007, “Development of a Fuel-Air Premixer for a Sub-ppm NOx Burner,” Proceedings of the ASME Turbo Expo 2007, Paper No. GT2007-27779 ) premixing of reactants. It had been tested with natural gas and has now been...

... of methane-based fuel blends containing significant levels of heavy hydrocarbons (up to 37.5% by volume). Ignition delay times were measured in two different shock tubes and in a rapid compression machine at pressures up to 34 atm and temperatures from 740 K to 1660 K. Laminar flame speeds were also measured...

... level of nitrogen enrichment of air for a single-cylinder spark-ignited natural gas engine. NO x reduction as high as 70% was realized with a modest 2% nitrogen enrichment while maintaining power density and simultaneously improving fuel conversion efficiency (FCE). Any enrichment beyond this level...

...Hongguang Jin; Xiaosong Zhang; Hui Hong; Wei Han In this paper, a novel gas turbine cycle integrating methanol decomposition and the chemical-looping combustion (CLC) is proposed. Two types of methanol-fueled power plants, including the new gas turbine cycle with CLC combustion and a chemically...

... existed between the three fuels for the combustion characteristics such as heat release rate, 50% mass fraction burned, and coefficient of variation in indicated mean effective pressure at low and medium engine loads. However at high engine loads the reduced knock resistance of the butanol blend forced...

...T. Le Cong; P. Dagaut; G. Dayma The oxidation of methane-based fuels was studied experimentally in a fused-silica jet-stirred reactor (JSR) operating at 1 – 10 atm , over the temperature range of 900 – 1450 K , from fuel-lean to fuel-rich conditions. Similar experiments were performed...

...Shawn M. Grannell; Dennis N. Assanis; Stanislav V. Bohac; Donald E. Gillespie An overall stoichiometric mixture of air, gaseous ammonia, and gasoline was metered into a single cylinder, variable compression ratio, supercharged cooperative fuel research (CFR) engine at varying ratios of gasoline...

...Ahsan R. Choudhuri; Mahesh Subramanya; Subramanyam R. Gollahalli The flame extinction limits of syngas ( H 2 ‐ C O ) flames were measured using a twin-flame counterflow burner. Plots of extinction limits ( % f : volumetric percent of fuel in air) versus global stretch rates were generated...

...Sosuke Nakamura; Vince McDonell; Scott Samuelsen The emissions of liquid-fuel fired gas turbine engines are strongly affected by the fuel preparation process that includes atomization, evaporation, and mixing. In the present paper, the effects of fuel atomization and evaporation on emissions from...