Hydrogen Engine and Numerical Temperature-Entropy Chart for Hydrogen/Air Cycle Analysis


Fast depletion of fossil fuels with its resources already passed its mid depletion region and the pollution levels already reached unsafe levels which make it utmost necessity to search for alternative fuels to meet sustainable energy demand with minimum environmental impact. Among alternative fuels, hydrogen is considered as the near future, long term renewable, sustainable and non-polluting fuel. In the present paper, hydrogen fueled internal combustion engine fundamentals highlighted and presented relating to hydrogen combustion properties. A Mat lab programmed hydrogen temperature-entropy-energy chart is developed and presented for fresh charge and products of combustion at different excess air factors per mole combustion gases. The chart, then, used to represent a SI hydrogen-fueled fuel/air cycle analysis, which proved to be valuable design tool for engine sizing and for prediction of engine performance. Predictions carried out using the hydrogen F/A cycle analysis at different λ show low brake specific fuel consumption and low volume specific power compared with conventional SI engine.

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Marzouk, E. and Ghulman, H. (2015) Hydrogen Engine and Numerical Temperature-Entropy Chart for Hydrogen/Air Cycle Analysis. Energy and Power Engineering, 7, 375-383. doi: 10.4236/epe.2015.79035.

Conflicts of Interest

The authors declare no conflicts of interest.


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