Research and scholarly material on flame and combustion.
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Filters: Date: "2009" Collection: "uu_afrc"
1 - 25 of 23
| Creator | Title | Date | Description | ||
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| 1 |
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Atreya, Arvind; Kezerle, James A. | A novel method of waste heat recovery from high temperature furnaces to create radiative flameless combustion | 2009 | One of the largest heat losses in high temperature furnaces is the loss of flue gas enthalpy. Currently, up to 60% of the heating value of natural gas (or any other fuel) used in high temperature furnaces is lost via the flue gases. This work discusses the benefits and technology of re-circulating t... |
| 2 |
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Seebold, James G. | AFRC 2009 international flare consortium update | 2009 | |
| 3 |
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Hu, Shengteng; Zeng, Dong; Sarv, Hamid | Applying laser-induced incandescence (LII) technique to soot volume fraction measurements for pyrolyzing pulverized coal | 2009 | Staged combustion and gasification of coal are conducive to soot formation. Presence of soot in combustion systems can affect heat transfer, pollutant formation, and unburned carbon levels.Development of an accurate soot production model requires high-quality experimental data. For this purpose, the... |
| 4 |
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Muhasilovic, M.; Duhovnik, J.; Deville, M. O.; Ciahotny, K.; Koza, V. | Both LES and k-e turbulence-treatment in CFD-approaches for creation of the database on flare-stacks flame-behaviour | 2009 | There is an emerging importance to understand and to "map" the reacting complex-flows of the (larges-cale) flare-fires. In this study, the influence of the atmospheric events onto the flame-behaviour, has a start-up in investigation, by watching the development of the temperature-, velocity- and irr... |
| 5 |
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Zeuthen, Jacob Hjerrild; Pedersen, Anne Juul; Riber, Christian; Astrup, Thomas; Hansen, Jorn; Frandsen, Flemming Jappe; Livbjerg, Hans | Combustion aerosols from municipal waste incineration - effects of feedstock composition and boiler operation | 2009 | Combustion aerosols were measured in the 22 MWth FASAN Waste-to-Energy (WtE) boiler while applying changes in feedstock composition and grate operation conditions, respectively. The changes in feedstock composition were applied by adding (one-by-one) dedicated waste fractions, comprising PVC plastic... |
| 6 |
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McKittrick, Alexis | Demonstration of Hydrogen Use in Steam-and Air-Assisted Flares | 2009 | |
| 7 |
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Shelil, Nasser; Bagdanavicius, Audrius; Griffiths, Anthony; Syred, Nick | Flashback analysis for hydrogen/methane mixtures for premixed swirl combustion | 2009 | The flashback problem which occurs by using lean premixed combustion in gas turbines is considered. Flashback simulation studies using CFD modelling package are performed for a wide range of hydrogen/methane (H2/CH4) blends combusted by air using a swirl burner under premixed conditions. The laminar... |
| 8 |
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Zieba, M.; Schuster, A.; Scheffknecht, G. | The influence of the gas composition on ammonia-to-Nox conversion during flameless combustion of low calorific value gases | 2009 | Flameless oxidation (FLOX®) technology has already demonstrated great potential in reducing thermal NOx while burning natural gas [1-3]. However, the tests with biogenous fuels have shown a limited ability to reduce NOx, where most of the NOx emissions are related to the fuel-bond nitrogen [4,5]. D... |
| 9 |
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Karlstrom, Oskar; Brink, Anders; Hercog, Jaroslaw; Hupa, Mikko; Tognotti, Leonardo | Kinetic combustion parameters for chars using to IFRF solid fuel data base | 2009 | In this study, kinetic combustion parameters are determined for chars in the IFRF solid fuel data base (SFDB) in order to model the combustion history of the chars. Experimental burn-out data are used to determine the kinetic parameters that best fit the experimental data according to two standard c... |
| 10 |
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Thornock, Jeremy; Smith, Philip; Chambers, Allan K. | LES simulations of sour gas flares in Western Canada | 2009 | |
| 11 |
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Thornock, Jeremy; Smith, Philip; Chambers, Allan K. | LES simulations of sour gas flares in Western Canada | 2009 | In this paper we describe the development of a numerical simulation tool for a sour gas flare of the type typically found in Alberta. The purpose of the model is to provide a way to guide safer sour gas flare operating conditions for varying environmental and operating conditions. The numerical simu... |
| 12 |
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Thumuluru, Sai Kumar; Lieuwen, Tim | OH- PLIF studies of acoustically forced swirl flames | 2009 | Lean premixed combustors are highly susceptible to combustion instabilities, caused by coupling of heat release fluctuations with combustor acoustics. In order to predict the conditions under which these instabilities occur and their limit cycle amplitudes, understanding of the amplitude dependent r... |
| 13 |
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Wendt, Jost O. L. | Oxy-coal combustion for retrofit: challenges and opportunities | 2009 | This paper is concerned with Oxy-Fuel Combustion, a process for the control of carbon dioxide from a range of solid fuel combustion processes. The focus is on the applicability of this technology for retrofit and hence on entrained flow combustors rather than on circulating fluidized bed systems. Fi... |
| 14 |
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Zhang, Jingwei; Kelly, Kerry; Eddings, Eric G.; Wendt, Jost O. L. | Oxy-coal combustion: effects of PO2 on coal jet stability in 02/C02 environnments | 2009 | The purpose of this research is to understand and predict the effects of near burner zone environment on ignition characteristics of a turbulent axial pulverized coal jet. In oxy-coal combustion this environment consists of O2 and CO2 (instead of N2). Ultimately the experiment will provide data for ... |
| 15 |
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Parente, A.; Galletti, C.; Tognotti, Leonardo | Predicting no formation in flameless combustion regime | 2009 | The direct implementation of large kinetic mechanisms for the prediction of pollutant emissions into CFD codes is still unfeasible, due to computer time limitations which become particularly relevant when considering the typical scale of the industrial applications. Therefore, simplified modeling ap... |
| 16 |
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Hinnrichs, Michele | Remote sensing & analysis of unburned gases from stacks & flares using imaging spectroscopy-presentation | 2009 | |
| 17 |
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Fox, Scott | Steamizer XP next generation steam flare technology - presentation | 2009 | |
| 18 |
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Smoot, L. Douglas; Smith, Joseph D.; Jackson, Robert E. | Technical foundations to establish new criteria for efficient operation of industrial steam-assisted gas flares - presentation | 2009 | |
| 19 |
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Reid, Charles; Thornock, Jeremy; Smith, Philip | Temporally and spatially resolved calculations of a reacting coal jet using large eddy simulations (LES) and direct quadrature method of moments (DQMOM) | 2009 | In a turbulent combusting coal jet, accurate prediction of the particle and velocity distributions are critical for predicting flame characteristics and ultimately heat flux in a coal-fired boiler. The present work combines a state-of-the-art particle model and turbulent-reacting flow model to provi... |
| 20 |
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Reid, Charles; Thornock, Jeremy; Smith, Philip | Temporally and spatially resolved calculations of a reacting coal jet using large eddy simulations (LES) and direct quadrature method of moments (DQMOM) | 2009 | In a turbulent combusting coal jet, accurate prediction of the particle and velocity distributions are critical for predicting flame characteristics and ultimately heat flux in a coal-fired boiler. The present work combines a state-of-the-art particle model and turbulent-reacting flow model to provi... |
| 21 |
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Werkelin, Johan; Hupa, Mikko | Towards better prediction of ash related problems in biomass combustion via improved fuel analysis | 2009 | Future biomass combustion systems should be fuel flexible. To avoid operational problems such as fouling, slagging, fluidized bed agglomeration, and corrosion, the relation between ash behaviour and fuel composition needs to be known. Ash-related problems are strongly coupled to phase transitions. M... |
| 22 |
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Reed, Scott; Isaacs, Rex; Palfreeman, Nigel; Chambers, Jesse | Zeeco "free-jet" technologies and application in industry | 2009 | The increased knowledge of damage caused to our health and environment by pollution has led to state and federal legislation requiring very low NOx emissions for process heater and industrial boilers. This legislation has taken various forms, with California and Texas having the most stringent requi... |
| 23 |
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Reed, Scott; Isaacs, Rex; Palfreeman, Nigel; Chambers, Jesse | Zeeco "free-jet" technologies and application in industry | 2009 | The increased knowledge of damage caused to our health and environment by pollution has led to state and federal legislation requiring very low NOx emissions for process heater and industrial boilers. This legislation has taken various forms, with California and Texas having the most stringent requi... |
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