Heat engine converts chemical engines available in the fuel to useful mechanical energy. One of the most famous heat engines is the internal combustion (IC) engine. IC engine plays a pivotal role in transportation and other industrial applications. A lot of waste heat is rejected from a typical IC engine as the conversion efficiency of this type of engine is only about 35-40 %. The average temperature of the exhaust system of a typical IC engine is in the range of 300°C to 500°C. The waste heat has the potential to be tapped and converted into useful energy. This can help to increase the performance of the IC engine system. A thermoelectric generator (TEG) can be used to recover the waste heat from the IC engine to electrical power. It can convert directly thermal energy into electrical energy. This work focused on the conversion of the waste heat energy of the IC engine into electricity by using TEG. The aim of the project was to demonstrate the applicability of TEG to convert waste heat from exhaust to useful electrical energy. A test bench was set up to experiment and obtain the power output from TEGs from waste heat recovery from an IC engine. Two TEGs were individually tested to attain the electrical characterization and also tested on series and parallel connections. The thermocouple wires were connected to gain the reading of the temperature at the exact points. The study showed that the series connection of TEGs has improved and increased voltage generation but the parallel connection is more reliable. The result shows that multi-TEG in the system gave the best result of electrical characterization compared to individual TEG. The system proved that waste heat recovery using TEGs has tremendous application in IC engines for better and higher efficient engine performance. TEG was able to receive 80.1°C of maximum hot temperature and 58.1°C of cold temperature supplied by air cooling.
Author
(s) Details
Nor
Amelia Shafikah Mat Noh
School of Mechanical Engineering, College of Engineering,
Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.
Baljit
Singh Bhathal Singh
School of Mechanical Engineering, College of Engineering,
Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.
Muhammad
Fairuz Remeli
School of Mechanical Engineering, College of Engineering,
Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia.
Amandeep
Oberoi
Department of Mechanical Engineering, Thapar Institute of
Engineering and Technology, Patiala, India.
Please see the book here:- https://doi.org/10.9734/bpi/erpra/v6/4044
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