Thermal radiation by combustion gases

Edwards, D. K.; Balakrishnan, A.

doi:10.1016/0017-9310(73)90248-2

Cited by 256 publications

(64 citation statements)

References 22 publications

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“…However the very long computation time required to solve potentially millions of RTE equations required at high temperatures causes this method to be prohibited for combustion calculations. Band models include popular models such as Goody's statistical narrow band model (SNB) [13] and Edwards exponential wide band model (EWBM) [14] and more recently developments such as the statistical narrow-band correlated-k (SNBCK) [15] and narrow band k-distribution methods [16]. While several of these models can provide very accurate results when compared to LBL methods, they are generally also too time consuming for engineering applications, and are more often used to generate benchmark data.…”

Section: Radiative Properties Of Gasesmentioning

confidence: 99%

Evaluation of solution methods for radiative heat transfer in gaseous oxy-fuel combustion environments

Porter

Liu

Pourkashanian

et al. 2010

Journal of Quantitative Spectroscopy and Radiative Transfer

114

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Evaluation of solution methods for radiative heat transfer in gaseous oxy-fuel combustion environmentsThe exact solution to radiative heat transfer in combusting flows is not possible analytically due to the complex nature of the integro-differential radiative transfer equation (RTE). Many different approximate solution methods for the solution of the RTE in multi-dimensional problems are available. In this paper, two of the principal methods, the spherical harmonics (P 1 ) and the discrete ordinates method (DOM) are used to calculate radiation. The radiative properties of the gases are calculated using a non-gray gas full spectrum k-distribution method and a gray method. Analysis of the effects of numerical quadrature in the DOM and its effect on computation time is performed. Results of different radiative property methods are compared with benchmark statistical narrow band (SNB) data for both cases that simulate air combustion and oxy-fuel combustion. For both cases, results of the non-gray full spectrum k-distribution method are in good agreement with the SNB data. In the case of oxy-fuel simulations with high partial pressures of carbon dioxide, use of gray method for the radiative properties may cause errors and should be avoided.

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Section: Radiative Properties Of Gasesmentioning

confidence: 99%

Evaluation of solution methods for radiative heat transfer in gaseous oxy-fuel combustion environments

Porter

Liu

Pourkashanian

et al. 2010

Journal of Quantitative Spectroscopy and Radiative Transfer

114

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“…Based on the blackbodyweighted transmission function and the blackbody-weighted cumulated distribution function, André and Vaillon [9] developed the spectral-line moment-based (SLMB) model, which can be regarded as further development of the SNB model. To gain better computational efficiency for thermal radiation transfer calculations, Edwards and Balakrishnan [10] developed the exponential wide-band (EWB) model, which is the most successful wide-band model. The above band models (SNB, EWB) provide transmissivity, rather than the fundamental gas absorption coefficient required in the differential form of the radiative transfer equation (RTE).…”

Section: Introductionmentioning

confidence: 99%

Calculations of gas thermal radiation transfer in one-dimensional planar enclosure using LBL and SNB models

Chu

Liu

Zhou

2011

International Journal of Heat and Mass Transfer

113

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“…These are the integrated band intensity α, the exponential decay bandwidth ω, and the mean line width to spacing (a "line overlap") parameter β. Expressions and correlations for the functional dependence of α, β and ω have been developed in Edwards [4] and Edwards and Balakrishnan [5] and are not presented here.…”

Section: Calculation Of Band Transmittancementioning

confidence: 99%

Evaluation of high-emissivity coatings in steam cracking furnaces using a non-grey gas radiation model

Stefanidis

Geem

Heynderickx

et al. 2008

Chemical Engineering Journal

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The efficiency of the application of high-emissivity coatings on the furnace walls in steam cracking technology can only be evaluated on the basis of a description of radiative heat transfer distinguishing between the frequency bands. To this end, a non-grey gas radiation model based on the exponential wide band model (EWBM) has been developed and applied in the context of three-dimensional CFD simulations of an industrial naphtha cracking furnace with side-wall radiation burners. Applying a high-emissivity coating on the furnace wall decreases the net outgoing radiation from the furnace wall in the absorption bands and increases the net outgoing radiation from the furnace wall in the clear windows. Since radiation that is emitted by the furnace wall and travels through the flue gas in the clear windows can reach the reactor tubes without partially being absorbed by the flue gas, contrary to radiation that is emitted by the furnace wall and travels through the flue gas in the absorption bands, the thermal efficiency of the furnace increases. It was found that application of a high-emissivity coating on the furnace walls improves the thermal efficiency of the furnace (∼1%), the naphtha conversion (∼1%) and the ethylene yield (∼0.5%). These differences are small but, considering the industrial importance and scale of the steam cracking process, significant.

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Thermal radiation by combustion gases

Cited by 256 publications

References 22 publications

Evaluation of solution methods for radiative heat transfer in gaseous oxy-fuel combustion environments

Evaluation of solution methods for radiative heat transfer in gaseous oxy-fuel combustion environments

Calculations of gas thermal radiation transfer in one-dimensional planar enclosure using LBL and SNB models

Evaluation of high-emissivity coatings in steam cracking furnaces using a non-grey gas radiation model

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