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S. Iyengar, Ananth
- An Experimental Investigation of Central Injection Based Hydrogen Dual Fuel Spark Ignition Engine
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Authors
Affiliations
1 Mechanical Engineering Department, MSRUAS, Bengaluru, Karnataka, IN
1 Mechanical Engineering Department, MSRUAS, Bengaluru, Karnataka, IN
Source
Journal of Mines, Metals and Fuels, Vol 70, No 3A (2022), Pagination: 148-152Abstract
Automobile industry is steadily moving away from traditional fossil fuels towards more sustainable and eco-friendly alternatives. Alternative to traditional fuels include hydrogen, which has the potential to satisfy the current energy demand in automotive field. However, design and fabrication of engines using pure hydrogen has many technological challenges. Combination of traditional fuels and hydrogen can reduce engine emissions including hydrocarbon (HC), carbon monoxide (CO), significant decrease in the carbon di oxide and methane. Additionally, the dual fuel engines provide the necessary savings with higher specific fuel consumption. However, dual fuel engines have a number of disadvantages such as pre-ignition, increase in NOx emissions, lower brake power and reduced brake thermal efficiency. In the present study, a single cylinder 110 cc spark ignition engine is procured and is retrofitted to admit hydrogen gas at specified pressures. The engine performance is measured using a mechanical load specifically designed for the engine. Brake power, torque, brake thermal efficiency, brake specific fuel consumption and other performance parameters are measured. The results from the engine is compared to the MATLAB model to study the inner working of the dual fuel engine to understand the pre-ignition characteristics. The results follow similar trends presented in the literature, the deviations in our study can be attributed to the type of engine selected and experimental errors. The highest increase in brake thermal efficiency and brake specific fuel consumption is 15.6 % and 22.5% respectively at 3500 rpm. The CO, and CO2 emissions have reduced by 86%, 26% respectively and increase of 16% in NOx is observed due to increase in combustion temperature.Keywords
Spark ignition engine, hydrogen central injection, brake thermal efficiency, brake specific fuel consumption.
References
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- Huang, Yuhan et al. (2021): 143 Renewable and Sustainable Energy Reviews Dual Injection: An Effective and Efficient Technology to Use Renewable Fuels in Spark Ignition Engines.
- Joshi, Dhruv S, and Dipak C Gosai. “Performance Improvement and Exhaust Emission Control on IC Engine Using Multi Fuels: A Review.” 166(I).
- Krishna, Vemula M. (2018): “Emissions Control and Performance Evaluation of Spark Ignition Engine with Oxy-Hydrogen Blending.” International Journal of Heat and Technology 36(1): 118–24.
- Loni, Reyhaneh et al. (2021): “A Review of Industrial Waste Heat Recovery System for Power Generation with Organic Rankine Cycle: Recent Challenges and Future Outlook.” Journal of Cleaner Production 287: 125070. https://doi.org/10.1016/j.jclepro.2020.125070.
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- Effect of Climatic Conditions on Performance Of Orc Using Environment-friendly Working Fluids – Special Reference to India
Abstract Views :73 |
PDF Views:0
Authors
Affiliations
1 Mechanical and Manufacturing Engineering Department, MSRUAS, Bengaluru, Karnataka, IN
1 Mechanical and Manufacturing Engineering Department, MSRUAS, Bengaluru, Karnataka, IN
Source
Journal of Mines, Metals and Fuels, Vol 70, No 3A (2022), Pagination: 153-157Abstract
Efficient heat recovery from low-grade heat sources is an achievable scientific frontier in the coming decade. One of the promising technologies in waste heat recovery is the organic Rankine cycle (ORC) system. Major obstacles to low-grade heat recovery include economic viability, scale, system efficiency, and exergy efficiency. In low temperature ORC systems, the cost of condenser becomes significant and hence air-cooled condenser is a feasible option. However, the performance of the air-cooled condenser is sensitive to the variation in ambient air conditions. India, being a tropical country, have villages and cities whose average temperature varies from -2oC in winter to 50oC in summer. The present work involves the study of heat transfer effects on the condenser using common organic working fluids and quantifying the consequences of environmental temperature variations. The constant thermal evaporator load is supplied with a medium-enthalpy heat source at 100 and 150oC. The atmospheric temperature associated with heat rejection from the condenser is varied from 273K to 313K for 5 working fluids. A MATLAB model of the ORC system is developed to study the effect of condenser performance on the first and second law efficiency of the ORC system. The MATLAB model is used to investigate the effect of varying inlet temperatures of the working fluid on the performance of ORC system to choose an organic working fluid suitable for Indian climatic conditions. R365 mfc, and R1233zd exhibit higher expander work and show higher heat rejection. At higher heat source temperatures of 150oC, the simulation shows a higher second law efficiency for the working fluid R1224yd(Z), which has critical temperature closed to the heat source temperature.Keywords
Organic rankine cycle, organic working fluid, condenser performance, heat transfer rateReferences
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- Burgess, Robin, Olivier Deschenes, Dave Donaldson, and Michael Greenstone. (2017): “Weather, Climate Change and Death in India.” University of Chicago.
- Kumar, Anurag, and Dibakar Rakshit. (2021). “A Critical Review on Waste Heat Recovery Utilization with Special Focus on Organic Rankine Cycle Applications.” Cleaner Engineering and Technology 5.
- Laouid, Youcef Abdellah Ayoub, Cheikh Kezrane, Yahia Lasbet, and Apostolos Pesyridis. (2021): “Towards Improvement of Waste Heat Recovery Systems: A Multi-Objective Optimization of Different Organic Rankine Cycle Configurations.” International Journal of Thermofluids 11: 100100. https://doi.org/ 10.1016/j.ijft.2021.100100.
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- Li, L., Y. T. Ge, and S. A. Tassou. (2017): “Experimental Study on a Small-Scale R245fa Organic Rankine Cycle System for Low-Grade Thermal Energy Recovery.” Energy Procedia 105(0): 1827–32.
- Loni, Reyhaneh et al. (2021): “A Review of Industrial Waste Heat Recovery System for Power Generation with Organic Rankine Cycle: Recent Challenges and Future Outlook.” Journal of Cleaner Production 287: 125070. https://doi.org/10.1016/j.jclepro.2020.125070.
- Pathak, Saurabh, and S. K. Shukla. (2018): “A Review on the Performance of Organic Rankine Cycle with Different Heat Sources and Absorption Chillers.” Distributed Generation and Alternative Energy Journal 33(2): 6–37.
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- Zhao, Li et al. (2018): “Solar Driven ORC-Based CCHP: Comparative Performance Analysis between Sequential and Parallel System Configurations.” Applied Thermal Engineering 131: 696–706.