Seminar Details

Seminar Title
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Numerical, experimental analyses of a dual fuel engine and possibilities of waste heat recovery for sustainable development in an institute campus
Seminar Type
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Synopsis Seminar
Department
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Mechanical Engineering
Speaker Type
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Student
Speaker Name
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NASEEM KHAYUM ( RollNo : 515ME1011)
Date  &  Time
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08 Apr 2021  16:00
Venue
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MS Team code (roemmoe)
Contact
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Prof. Anbarasu Subramanian
Abstract
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Nowadays, institutions and establishments have been dumped plenty of organic wastes into open yard. These organic wastes can also be recycled efficiently for sustainable development in the institute campus. So, one such example is adopted for the present thesis work. Disposal of spent tea waste (STW) and waste cooking oil from the hostel premises and institute canteens of an educational institution were considered as the source of waste, and an attempt was made to convert them into useful energy. Initially, an assessment was made to check the potential of biogas production from anaerobic co-digestion of cow manure and STW. Then, using the trans-esterification process, biodiesel was produced from collected waste cooking oil. These two biofuels viz., biogas and waste cooking oil methyl ester (WCOME) were used in a diesel engine for generating power. The engine was allowed to completely run in dual fuel mode by using WCOME as a pilot fuel and biogas as inducted fuel. Further, in order to recover the waste heat available in the engine exhaust (or) to convert waste heat into electricity, the thermo-electric generation (TEG) waste heat recovery technology was adopted and coupled to the engine exhaust. From the research study, it was concluded that, by using AD3 (30% of STW and 70% of cow manure) on mass basis exhibited a highest methane yield of about 71% with a biogas flow rate of 0.75 kg/h. During engine experimentation, biogas was inducted at 0.75 kg/h and WCOME was injected into engine cylinder, a maximum thermal efficiency of about 31.2% at 24.5°CA injection timing, 240 bar nozzle opening pressure and CR18.5. Further experimentation was carried out at optimum engine conditions to convert the waste heat into electricity using thermo-electric generator (TEG). A maximum power output of about 4.1 W was obtained with 2.1% conversion efficiency. Furthermore, to enhance the performance of the TEG, heat pipe was integrated on the cold side of the TEG. It was observed that, a maximum power output of about 6.1 W was obtained with a conversion efficiency of around 2.9%.