Simulation study on exhaust turbine power generation for waste heat recovery from exhaust of a diesel engine

Xu, Yongming; Cui, Yimin; Wang, Yaodong; Wang, Peng

doi:10.1016/j.egyr.2021.09.083

Simulation study on exhaust turbine power generation for waste heat recovery from exhaust of a diesel engine

Xu, Yongming; Cui, Yimin; Wang, Yaodong; Wang, Peng

Authors

Yongming Xu

Yimin Cui

Professor Yaodong Wang yaodong.wang@durham.ac.uk
Professor

Abstract

Diesel engine has been used as the primary mover in vehicles for a long time. It is known that around 25%–30% of the fuel energy is wasted in the exhaust gas from diesel engines. In this study, a turbine power generation system including a 1.8 kW 60,000 r/min high-speed permanent magnet generator and a micro exhaust gas turbine, which is coupled to a diesel engine is designed and modeled to investigate its potential for recovering the wasted energy in the exhaust gas from a diesel engine. Computational models are set up using GT-POWER, MATLAB/SIMULINK and ANSOFT software. The performance and characteristics of the generator, the exhaust gas turbine and the engine are investigated. The simulation results showed that the exhaust turbine power generation system recovered the energy from the engine exhaust gas to generate electrical power. Simultaneously, the maximum power generated is 1.8 kW when the turbine speed is 60,000 rpm. The system efficiency reached its peak of 42.8% when the engine speed is 3000 rpm Last but not least, the electromagnetic characteristics of high-speed permanent magnet generator, which is coupled to an exhaust turbine, are also discussed and presented.

Citation

Xu, Y., Cui, Y., Wang, Y., & Wang, P. (2021). Simulation study on exhaust turbine power generation for waste heat recovery from exhaust of a diesel engine. Energy Reports, 7, 8378-8389. https://doi.org/10.1016/j.egyr.2021.09.083

Journal Article Type	Article
Acceptance Date	Sep 19, 2021
Online Publication Date	Oct 7, 2021
Publication Date	2021-11
Deposit Date	Jan 26, 2022
Publicly Available Date	Jan 27, 2022
Journal	Energy Reports
Print ISSN	2352-4847
Electronic ISSN	2352-4847
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	7
Pages	8378-8389
DOI	https://doi.org/10.1016/j.egyr.2021.09.083
Public URL	https://durham-repository.worktribe.com/output/1215833

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