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  • Two baseline approaches are available for prediction of nitrogen oxides emissions. The first one is based on empirical and semi-empirical models based exclusively on measurements. The second approach consist in comprehensive CFD modelling complemented bya NOx model. This contribution presents predictions of NOx emissions by both of these approaches and thus provides a comparison that indicates their respective advantages and drawbacks as well as evaluation of predictive power of the two approaches. Thhe present semi-empirical model is based on calculation of an equivalent effective temperature and has already been validated successfully. Here it was further developed to use information available from the CFD modelling in order to find out whether such information could improve the predictive accuracy of the semi-empirical model. These predictions are compared to the results of full CFD-based NOx modelling using commercial software FLUENT and to the measured data.
  • Two baseline approaches are available for prediction of nitrogen oxides emissions. The first one is based on empirical and semi-empirical models based exclusively on measurements. The second approach consist in comprehensive CFD modelling complemented bya NOx model. This contribution presents predictions of NOx emissions by both of these approaches and thus provides a comparison that indicates their respective advantages and drawbacks as well as evaluation of predictive power of the two approaches. Thhe present semi-empirical model is based on calculation of an equivalent effective temperature and has already been validated successfully. Here it was further developed to use information available from the CFD modelling in order to find out whether such information could improve the predictive accuracy of the semi-empirical model. These predictions are compared to the results of full CFD-based NOx modelling using commercial software FLUENT and to the measured data. (en)
  • Pro predikce emisí oxidů dusíku jsou k dispozici dva základní přístupy. Ten první je založen na empirickém či semi-empirickém modelování jejich tvorby. Druhý přístup spočívá v komplexním CFD (%22Computational Fluid Dynamics%22) modelování, doplněném o modeltvorby NOx. Tento příspěvek představuje predikce emisí oxidů dusíku založené na obou těchto přístupech a poskytuje srovnání, které ukazuje na jejich výhody a nedostatky, a také jejich prediktivní schopnosti. Předkládaný semi-empirický model je založeený na výpočtu ekvivalentní teploty a již byl úspěšně ověřen. Zde je dále rozvinut, takže je schopen využívat některé informace dostupné ze CFD výpočtu, o kterých je možné se domnívat, že by mohly vést ke zlepšení prediktivní přesnosti semi-empirického modelu. Tyto predikce jsou porovnány s výsledky modelu, který plně vychází z CFD výpočtu, a také s naměřenými daty. (cs)
Title
  • Evaluation of different approaches for prediction of NOx emissions concentration from gas flames
  • Evaluation of different approaches for prediction of NOx emissions concentration from gas flames (en)
  • Zhodnocení různých přístupů při predikci oxidů dusíku při splování plynných paliv (cs)
skos:prefLabel
  • Evaluation of different approaches for prediction of NOx emissions concentration from gas flames
  • Evaluation of different approaches for prediction of NOx emissions concentration from gas flames (en)
  • Zhodnocení různých přístupů při predikci oxidů dusíku při splování plynných paliv (cs)
skos:notation
  • RIV/00216305:26210/04:PU47261!RIV06-GA0-26210___
http://linked.open.../vavai/riv/strany
  • 1036-1055
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA101/05/2469)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 563347
http://linked.open...ai/riv/idVysledku
  • RIV/00216305:26210/04:PU47261
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • NOx, modelling (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [9A41204ABABD]
http://linked.open...v/mistoKonaniAkce
  • Praha
http://linked.open...i/riv/mistoVydani
  • Czech Republic
http://linked.open...i/riv/nazevZdroje
  • 16th International Congress of Chemical and Process Engineering CHISA 2004, 7th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2004,
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Bébar, Ladislav
  • Hájek, Jiří
  • Nekvasil, Richard
  • Kermes, Vít
  • Oral, Jaroslav
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • ČSCHI
http://localhost/t...ganizacniJednotka
  • 26210
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