Influence of Fuel Composition on the Operation of a Liquid Fueled Resonant Pulse Combustor

2018 ◽  
Author(s):  
Mohammad Qatomah ◽  
Joel C. Lisanti ◽  
William Roberts
Keyword(s):  
Fuel Composition ◽  
Pulse Combustor

Response of a pulse combustor to changes in fuel composition

1988 ◽  
Vol 21 (1) ◽  
pp. 547-555 ◽  
Author(s):  
J.O. Keller ◽  
Charles K. Westbrook
Keyword(s):  
Fuel Composition ◽  
Pulse Combustor

LES Study of Active Valve Resonant Pulse Combustor

2021 ◽  
Author(s):  
Joel C. Lisanti ◽  
Xuren Zhu ◽  
Thibault Guiberti ◽  
William L. Roberts
Keyword(s):  
Pulse Combustor ◽  
Active Valve

Analysis of the optimal fuel composition for the Indonesian experimental power reactor

Kerntechnik ◽  
2017 ◽  
Vol 82 (1) ◽  
pp. 78-86 ◽  
Author(s):  
P. H. Liem ◽  
T. M. Sembiring ◽  
B. Arbie ◽  
I. Subki
Keyword(s):  
Power Reactor ◽  
Fuel Composition

scholarly journals Kinetic Modeling of the Ignition of Droplets of Fast Pyrolysis Bio-oil: Effect of Initial Diameter and Fuel Composition

2021 ◽  
Author(s):  
Alessandro Stagni ◽  
Raffaela Calabria ◽  
Alessio Frassoldati ◽  
Alberto Cuoci ◽  
Tiziano Faravelli ◽  
...  
Keyword(s):  
Kinetic Modeling ◽  
Fast Pyrolysis ◽  
Fuel Composition ◽  
Initial Diameter ◽  
Bio Oil

scholarly journals Additives to Coal-Based Fuel Pellets for the Intensification of Combustion and Reduction in Anthropogenic Gas Emissions

2020 ◽  
Vol 10 (19) ◽  
pp. 6689
Author(s):  
Dmitriy Klepikov ◽  
Tereza Kudelova ◽  
Kristina Paushkina ◽  
Pavel Strizhak
Keyword(s):  
Coal Dust ◽  
Polymer Particle ◽  
Porous Polymer ◽  
Flue Gases ◽  
Sulfur Oxides ◽  
Fuel Composition ◽  
Material Particle ◽  
Wood Sawdust ◽  
Fuel Pellets ◽  
Ignition And Combustion

Cylinder-shaped fuel pellets that were 3 mm in diameter and 3 mm in height, with a mass of 20 mg, were produced by compressing dry coal processing waste under the pressure of 5 MPa. The first group of pellets from coal dust with a particle size less than 140 µm did not contain any additives. The pellets of the second group of fuel compositions contained an oil-impregnated porous polymer material particle with a size of 0.5 mm in the central part of the experimental sample. The particle was surrounded by coal dust from all sides. The ratio of components was 90:10% for coal dust: polymer particle. The latter value almost completely corresponds to the fraction of oil in the fuel composition, since the mass of a porous polymer material particle is negligible. The third group of compositions was a 70:30% mixture of coal dust with wood sawdust with a particle size less than 45 µm, or 45–100, 100–200 and 200–500 µm. The ignition and combustion of single fuel pellets were studied under radiant heating in an air medium while varying the temperature from 800 to 1000 °C. The processes during the fuel combustion were recorded by a high-speed video camera, and the concentrations of the main anthropogenic emissions in flue gases were measured by a gas analyzer. The main characteristics were established—ignition delay times (2–8 s) and duration of burnout (40–90 s)—at different heating temperatures. A difference was established in the combustion mechanisms of the pellets, when adding various components to the fuel mixture composition. This has a direct influence on the induction period duration and combustion time, other conditions being equal, as well as on the concentration of nitrogen and sulfur oxides in the flue gases. Adding an oil-impregnated porous polymer particle to the fuel composition intensifies ignition and combustion, since the times of ignition delay and complete burnout of fuel pellets under threshold conditions decrease by 70%, whereas adding wood sawdust reduces the content of nitrogen and sulfur oxides in the flue gases by 30% and 25%, respectively.

Study on Fuel Composition for the Performance Enhancement of Solid Oxide Fuel Cell Operated with Biodiesel Fuel

2013 ◽  
Vol 57 (1) ◽  
pp. 3005-3011
Author(s):  
Q. T. Tran ◽  
Y. Shiratori ◽  
Y. Kakihara ◽  
T. Kitaoka ◽  
K. Sasaki
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Performance Enhancement ◽  
Solid Oxide ◽  
Biodiesel Fuel ◽  
Fuel Composition ◽  
Oxide Fuel

Effects of Tailpipe Friction on the Nonlinear Dynamics of a Thermal Pulse Combustor

2008 ◽  
Vol 130 (1) ◽  
Author(s):  
Achintya Mukhopadhyay ◽  
Subhashis Datta ◽  
Dipankar Sanyal
Keyword(s):  
Time Series ◽  
Friction Factor ◽  
Time Series Data ◽  
Threshold Value ◽  
Series Data ◽  
Combustion Dynamics ◽  
Thermal Pulse ◽  
Pulse Combustor ◽  
Steady Combustion ◽  
Peak Pressures

The effect of tailpipe friction on the combustion dynamics inside a thermal pulse combustor has been investigated using a nonlinear model consisting of four coupled first order ordinary differential equations. The dynamics of the system is represented through time series plots, time-delay phase plots, and Poincaré maps. The results indicate that as the tailpipe friction factor is lowered, the system undergoes a transition from steady combustion through oscillating combustion to an intermittent combustion with chaotic characteristics before extinction. The time series data are shown to be useful indicator for early detection of extinction. In one approach (thresholding), the occurrence of local peak pressures below a predefined threshold value is identified as an event and the number of events (event count) and largest number of successive cycles with such events (event duration) are recorded as the friction factor is lowered. In another approach, the statistical moments (kurtosis) of the data are used. Number of kurtosis peaks above a prescribed value and variance of the kurtosis values are recorded for decreasing values of friction factor. All these numbers sharply increase as the system approaches extinction.

Fuel Flexibility Influences on Premixed Combustor Blowout, Flashback, Autoignition and Instability

2006 ◽  
Author(s):  
Tim Lieuwen ◽  
Vince McDonell ◽  
Eric Petersen ◽  
Domenic Santavicca
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Dynamic Stability ◽  
Current Understanding ◽  
Fuel Composition ◽  
Fuel Flexibility ◽  
Lean Premixed ◽  
Gas Fuel ◽  
The Impact ◽  
Underlying Processes

This paper addresses the impact of fuel composition on the operability of lean premixed gas turbine combustors. This is an issue of current importance due to variability in the composition of natural gas fuel supplies and interest in the use of syngas fuels. Of particular concern is the effect of fuel composition on combustor blowout, flashback, dynamic stability, and autoignition. This paper reviews available results and current understanding of the effects of fuel composition on the operability of lean premixed combustors. It summarizes the underlying processes that must be considered when evaluating how a given combustor’s operability will be affected as fuel composition is varied.

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