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Showing 1 to 14 of 14 for “"Fuel concentration"”.
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Concentration And Velocity Fields Throughout The Flow Field Of Swirling Flows In Gas Turbine Mixers
Air velocity and fuel concentration data have been collected throughout the flow fields of two gas turbine mixers in an effort to better understand the mixing of fuel and air in gas turbine mixers. The two gas turbine mixers consisted of an annular flow profile and incorporated swirl vanes to …
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The Influence of Preferential Diffusion On the Blow-Off of Laminar Aerated Burner Flames
… velocity gradient and burning velocity against fuel concentration obtained for eight different Propane/Hydrogen ratios. It has been proposed that the degree to which preferential diffusion will occur may be characterised by a dimensionless group termed the preferential diffusion factor. This has …
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An Experimental Investigation of the Injection Process in a Direct-Injected Natural Gas Engine Using PLIF and CARS
… the conservation equations effectively collapsed fuel jet penetration measurements under both motoring and stationary piston conditions. The scaling factors are based on the pseudo diameter of the jet, which is the diameter of an equivalent sonic jet expanded to match the in-cylinder conditions. …
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Effect of Flow Distortion on Fuel Mixing and Combustion in an Upstream-Fueled Cavity Flameholder for a Supersonic Combustor
… of an incident shockwave on the flowfield, fuel distribution and combustion within a cavity flameholder with upstream fuel injection. The effect of the shockwave location (on the upstream fuel jet or over the cavity) and shock angle are controlled by adjusting a shock generator mounted in …
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Numerical simulations of ion transport membrane oxy-fuel reactors for CO₂ capture applications
… a novel technology to enable air separation and fuel conversion to take place simultaneously in a single unit. Possessing the mixed ionic and electronic conductivity, perovskite membranes or ion transport membranes permeate selectively oxygen ions from the air (feed) side to the sweep gas or …
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Direct Methanol Fuel Cells Using Pure Methanol
<p>Fuel cell technology has attained significant appeal as a form of renewable energy in recent years due to its diverse applications, various fuel types, and lower greenhouse gas emissions. Of the various fuel cell types, direct methanol fuel cells (DMFCs) hold a set of distinct advantages for …
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Homogeneous and stratified vented gas explosions
… limit was in many cases much higher than the fuel concentration would normally suggest. Stratified mixtures with global equivalence ratio around stoichiometric produced significantly lower pressures than their homogeneous equivalents. However, stratified (globally) near-limit mixtures produced …
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Enzymatic fuel cells via synthetic pathway biotransformation
Enzyme-catalyzed biofuel cells would be a great alternative to current battery technology, as they are clean, safe, and capable of using diverse and abundant renewable biomass with high energy densities, at mild reaction conditions. However, currently, three largest technical challenges for …
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Direct methanol fuel cell with extended reaction zone anode : PtRu and PtRuMo supported on fibrous carbon
The direct methanol fuel cell (DMFC) is considered to be a promising power source for portable electronic applications and transportation. At present there are several challenges that need to be addressed before the widespread commercialization of the DMFC technology can be implemented. The …
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On fuel selection in controlled auto-ignition engines : the link between intake conditions, chemical kinetics, and stratification
… of this research is to examine the impact fuel selection can have on the high-load limit in a stratified Compression Auto-Ignition (CAI) engine. This was accomplished by first studying the validity of the current metrics that predict when the high-load limit is reached. Temperature and fuel …
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Knock mitigation on boosted Controlled Auto-Ignition engines with fuel stratification and Exhaust Gas Recycling
… carried out to understand the mechanism of using fuel stratification and Exhaust Gas Recycling (EGR) for knock mitigation on boosted Controlled Auto-Ignition (CAl) engines. Experiments were first conducted on Rapid Compression Machine (RCM) to profile the ignition characteristic of the specific …
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Development of a new apparatus to measure flame spread through a free stratified fuel/air mixture: numerical modeling and experimental results
<p>While flame spread through uniform fuel-air mixtures has been widely studied in combustion science, there has been relatively little attention given to the study of non-homogenous, or layered, fuel-air mixtures. However, these systems are common occurrences in such cases as terrestrial fuel …
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Autoignition and combustion chemistry of kerosene type fuels and components
… combustion of conventional (petroleum-based) jet fuels, alternative (synthetic or bio-derived) fuels, and pure fuel components at low combustion temperatures (500 – 725K) and under stoichiometric to fuel lean conditions. These conditions are of interest because they occur at the edges of stable …
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Oxy-combustion of High Water Content Fuels
… - direct combustion of high water content fuels. Due to the high water content in the fuels, they may not burn under air-fired conditions. Therefore, oxy-combustion is applied. Three applications of this concept in power generation are proposed - direct steam generation for the turbine …