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Evaluation of heat transfer models with measurements in a hydrogen-fuelled spark ignition engine

Joachim Demuynck (UGent) , Sebastian Verhelst (UGent) , Michel De Paepe (UGent) , Henk Huisseune (UGent) and Roger Sierens (UGent)
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Abstract
Hydrogen-fuelled internal combustion engines are still investigated as an alternative for current drive trains because they have a high efficiency, near-zero noxious and zero tailpipe greenhouse gas emissions. A thermodynamic model of the engine cycle enables a cheap and fast optimization of engine settings for operation on hydrogen. The accuracy of the heat transfer sub model within the thermodynamic model is important to simulate accurately the emissions of oxides of nitrogen which are influenced by the maximum gas temperature. These emissions can occur in hydrogen internal combustion engines at high loads and they are an important constraint for power and efficiency optimization. The most common models in engine research are those from Annand and Woschni, but they are developed for fossil fuels and the heat transfer of hydrogen differs a lot from the classic fuels. We have measured the heat flux and the wall temperature in an engine that can run on hydrogen and methane and we have investigated the accuracy of simulations of the heat transfer models. This paper describes an evaluation of the models of Annand and Woschni with our heat flux measurements. Both models can be calibrated to account for the influence of the specific engine geometry on the heat transfer. But if they are calibrated for methane, they fail to calculate the heat transfer for hydrogen combustion. This demonstrates the models lack some gas or combustion properties which influence the heat transfer process in the case of hydrogen combustion.
Keywords
EFFICIENCY, POWER OUTPUT

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Chicago
Demuynck, Joachim, Sebastian Verhelst, Michel De Paepe, Henk Huisseune, and Roger Sierens. 2010. “Evaluation of Heat Transfer Models with Measurements in a Hydrogen-fuelled Spark Ignition Engine.” In Proceedings of the 14th International Heat Transfer Conference, 87–95. American Society of Mechanical Engineers (ASME).
APA
Demuynck, Joachim, Verhelst, S., De Paepe, M., Huisseune, H., & Sierens, R. (2010). Evaluation of heat transfer models with measurements in a hydrogen-fuelled spark ignition engine. Proceedings of the 14th International Heat Transfer Conference (pp. 87–95). Presented at the 14th International Heat Transfer Conference (IHTC-14), American Society of Mechanical Engineers (ASME).
Vancouver
1.
Demuynck J, Verhelst S, De Paepe M, Huisseune H, Sierens R. Evaluation of heat transfer models with measurements in a hydrogen-fuelled spark ignition engine. Proceedings of the 14th International Heat Transfer Conference. American Society of Mechanical Engineers (ASME); 2010. p. 87–95.
MLA
Demuynck, Joachim, Sebastian Verhelst, Michel De Paepe, et al. “Evaluation of Heat Transfer Models with Measurements in a Hydrogen-fuelled Spark Ignition Engine.” Proceedings of the 14th International Heat Transfer Conference. American Society of Mechanical Engineers (ASME), 2010. 87–95. Print.
@inproceedings{1026108,
  abstract     = {Hydrogen-fuelled internal combustion engines are still investigated as an alternative for current drive trains because they have a high efficiency, near-zero noxious and zero tailpipe greenhouse gas emissions. A thermodynamic model of the engine cycle enables a cheap and fast optimization of engine settings for operation on hydrogen. The accuracy of the heat transfer sub model within the thermodynamic model is important to simulate accurately the emissions of oxides of nitrogen which are influenced by the maximum gas temperature. These emissions can occur in hydrogen internal combustion engines at high loads and they are an important constraint for power and efficiency optimization. The most common models in engine research are those from Annand and Woschni, but they are developed for fossil fuels and the heat transfer of hydrogen differs a lot from the classic fuels. We have measured the heat flux and the wall temperature in an engine that can run on hydrogen and methane and we have investigated the accuracy of simulations of the heat transfer models. This paper describes an evaluation of the models of Annand and Woschni with our heat flux measurements. Both models can be calibrated to account for the influence of the specific engine geometry on the heat transfer. But if they are calibrated for methane, they fail to calculate the heat transfer for hydrogen combustion. This demonstrates the models lack some gas or combustion properties which influence the heat transfer process in the case of hydrogen combustion.},
  articleno    = {IHTC14-22438},
  author       = {Demuynck, Joachim and Verhelst, Sebastian and De Paepe, Michel and Huisseune, Henk and Sierens, Roger},
  booktitle    = {Proceedings of the 14th International Heat Transfer Conference},
  isbn         = {9780791838792},
  keyword      = {EFFICIENCY,POWER OUTPUT},
  language     = {eng},
  location     = {Washington, DC, USA},
  pages        = {IHTC14-22438:87--IHTC14-22438:95},
  publisher    = {American Society of Mechanical Engineers (ASME)},
  title        = {Evaluation of heat transfer models with measurements in a hydrogen-fuelled spark ignition engine},
  year         = {2010},
}

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