Energy and exergy analysis of a turbocharged hydrogen internal combustion engine |
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| Affiliation: | 1. Energy Conservation Technology Research Institute, Shandong University of Technology, NO.266 West Xincun Street, 255049 Zibo, China;2. Weichai Power Company Limited, 261041 Weifang, China;1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, PR China;2. Engine Research Center, University of Wisconsin, Madison, WI, USA;1. Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, United States;2. Grupo de Ciencia y Tecnología del Gas y Uso Racional de la Energía, Department of Mechanical Engineering, University of Antioquia, Colombia |
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| Abstract: | This paper has analyzed the energy and exergy distribution of a 2.3 L turbocharged hydrogen engine by mapping characteristics experiment. The energy loss during fuel energy conversion mainly includes: exhaust energy (23.5–34.7%), cooling medium (coolant and oil) energy (21.3–34.8%), intercooler energy (0.5–3.6%) and uncounted energy (5.8–14.1%), while the proportion of effective work ranges from 25.7% to 35.1%. Results show that all kinds of energies increase with engine speeds and they are not sensitive to the loads. However, the proportions of different kind of energy exhibit different characteristics. Moreover, the turbocharger can increase the brake thermal efficiency and the maximum can be increased by 4.8%. Exergy analysis shows exergy efficiency of the coolant energy does not exceed 5%, while the exergy efficiency of the exhaust energy can reach up to 23%. And the total hydrogen fuel thermal efficiency limit is theoretically above 59%. |
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| Keywords: | Hydrogen engine Energy analysis Exergy analysis Turbocharged |
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