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Design and Optimization of an Integrated Turbo-Generator and Thermoelectric Generator for Vehicle Exhaust Electrical Energy Recovery

Author

Listed:
  • Prasert Nonthakarn

    (School of Engineering and Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand)

  • Mongkol Ekpanyapong

    (School of Engineering and Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand)

  • Udomkiat Nontakaew

    (Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand)

  • Erik Bohez

    (School of Engineering and Technology, Asian Institute of Technology, Pathum Thani 12120, Thailand)

Abstract

The performance of turbo-generators significantly depends on the design of the power turbine. In addition, the thermoelectric generator can convert waste heat into another source of energy. This research aims to design and optimize an integrated turbo-generator and thermoelectric generator for diesel engines. The goal is to generate electricity from the vehicle exhaust gas. Electrical energy is derived from generators using the flow, pressure, and temperature of exhaust gases from combustion engines and heat-waste. In the case of turbo-generators and thermoelectric generators, the system automatically adjusts the power provided by an inverter. Typically, vehicle exhausts are discarded to the environment. Hence, the proposed conversion to electrical energy will reduce the alternator charging system. This work focuses on design optimization of a turbo-generator and thermoelectric generator for 2500 cc. diesel engines, due to their widespread usage. The concept, however, can also be applied to gasoline engines. Moreover, this model is designed for a hybrid vehicle. Charging during running will save time at the charging station. The optimization by variable van angles of 40°, 50°, 62°, 70°, and 80° shows that the best output power is 62°, which is identical to that calculated. The maximum power outputted from the designed prototype was 1262 watts when operating with an exhaust mass flow rate of 0.1024 kg/s at 3400 rpm (high performance of the engine). This research aims to reduce fuel consumption and reduce pollution from the exhaust, especially for hybrid vehicles.

Suggested Citation

  • Prasert Nonthakarn & Mongkol Ekpanyapong & Udomkiat Nontakaew & Erik Bohez, 2019. "Design and Optimization of an Integrated Turbo-Generator and Thermoelectric Generator for Vehicle Exhaust Electrical Energy Recovery," Energies, MDPI, vol. 12(16), pages 1-24, August.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:16:p:3134-:d:257836
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    References listed on IDEAS

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    3. Liang, Xingyu & Sun, Xiuxiu & Tian, Hua & Shu, Gequn & Wang, Yuesen & Wang, Xu, 2014. "Comparison and parameter optimization of a two-stage thermoelectric generator using high temperature exhaust of internal combustion engine," Applied Energy, Elsevier, vol. 130(C), pages 190-199.
    4. Tian, Hua & Sun, Xiuxiu & Jia, Qi & Liang, Xingyu & Shu, Gequn & Wang, Xu, 2015. "Comparison and parameter optimization of a segmented thermoelectric generator by using the high temperature exhaust of a diesel engine," Energy, Elsevier, vol. 84(C), pages 121-130.
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    Cited by:

    1. Dariusz Kozak & Paweł Mazuro & Andrzej Teodorczyk, 2021. "Numerical Simulation of Two-Stage Variable Geometry Turbine," Energies, MDPI, vol. 14(17), pages 1-34, August.
    2. Emiliano Pipitone & Salvatore Caltabellotta, 2021. "Efficiency Advantages of the Separated Electric Compound Propulsion System for CNG Hybrid Vehicles," Energies, MDPI, vol. 14(24), pages 1-31, December.
    3. Tong Xin & Guolai Yang & Liqun Wang & Quanzhao Sun, 2020. "Numerical Calculation and Uncertain Optimization of Energy Conversion in Interior Ballistics Stage," Energies, MDPI, vol. 13(21), pages 1-21, November.
    4. Olle Högblom & Ronnie Andersson, 2020. "Multiphysics CFD Simulation for Design and Analysis of Thermoelectric Power Generation," Energies, MDPI, vol. 13(17), pages 1-15, August.
    5. Emiliano Pipitone & Salvatore Caltabellotta & Antonino Sferlazza & Maurizio Cirrincione, 2023. "Hybrid Propulsion Efficiency Increment through Exhaust Energy Recovery—Part 1: Radial Turbine Modelling and Design," Energies, MDPI, vol. 16(3), pages 1-25, January.

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