Effect on performance and emissions of a dual fuel diesel engine using hydrogen and producer gas as secondary fuels |
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Authors: | A.E. Dhole R.B. Yarasu D.B. Lata Abhishek Priyam |
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Affiliation: | 1. Department of Mechanical Engineering, Government Polytechnic, Amravati, Maharashtra 444603, India;2. Department of Mechanical Engineering, Government College of Engineering, Amravati, Maharashtra 444603, India;3. Department of Mechanical Engineering, G.H. Raisoni College of Engineering and Management, Amravati, 444705, India;4. Department of Mechanical Engineering, NIT, Jamshedpur, India |
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Abstract: | Energy is an essential prerequisite for economical and social growth of any country. Skyrocketing of petroleum fuel cost s in present day has led to growing interest in alternative fuels like CNG, LPG, Producer gas, Biogas in order to provide suitable substitute to diesel for a compression ignition engine. This paper discusses some experimental investigations on dual fuel operation of a 4 cylinder (turbocharged and intercooled) 62.5 kW gen-set diesel engine with hydrogen, producer gas (PG) and mixture of producer gas and hydrogen as secondary fuels. Results on brake thermal efficiency and emissions, namely, un-burnt hydrocarbon (HC), carbon monoxide (CO), and NOx are presented here. The paper also contains vital information relating to the performances of an engine at a wide range of load conditions with different gaseous fuel substitutions. When only hydrogen is used as secondary fuel, maximum increase in the brake thermal efficiency is 7% which is obtained with 20% of secondary fuel. When only producer gas is used as secondary fuel, maximum decrease in the brake thermal efficiency of 8% is obtained with 30% of secondary fuel. Compared to the neat diesel operation, proportion of un-burnt HC and CO increases, while, emission of NOx reduces in all Cases. On the other hand, when 40% of mixture of producer gas and hydrogen is used (in the ratio (60:40) as secondary fuel, brake thermal efficiency reduces marginally by 3%. Further, shortcoming of low efficiency at lower load condition in a dual fuel operation is removed when a mixture of hydrogen and producer gas is used as the secondary fuel at higher than 13% load condition. Based on the performance studied, a mixture of producer gas and hydrogen in the proportion of 60:40 may be used as a supplementary fuel for diesel conservation. |
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Keywords: | Dual fuel engine Combustion Modeling Alternative fuels Hydrogen Producer gas |
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