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1 Journal of Power Technologies

1 2012

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Effect of hydrogen-diesel quantity variation on brake thermal efficiency of a dual fuelled diesel engine

Debnath B. K., Saha U. K., Sahoo N.

Journal of Power Technologies

2012

Vol. 92, nr 1

55-67

The twenty first century could well see the rise of hydrogen as a gaseous fuel, due to it being both environment friendly and having a huge energy potential. In this paper, experiments are performed in a compression ignition diesel engine with dual fuel mode. Diesel and hydrogen are used as pilot liquid and primary gaseous fuel, respectively. The objective of this study is to find out the specific composition of diesel and hydrogen for maximum brake thermal efficiency at five different loading conditions (20%, 40%, 60%, 80% and 100% of full load) individually on the basis of maximum diesel substitution rate. At the same time, the effects on brake specific fuel consumption, brake specific energy consumption, volumetric efficiency and exhaust gas temperature are also observed at various liquid gaseous fuel compositions for all the five loadings. Furthermore, second law analysis is carried out to optimize the dual fuel engine run. It is seen that a diesel engine can be run efficiently in hydrogen-diesel dual fuel mode if the diesel to hydrogen ratio is kept at 40:60.