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The Development of Skutterudite-Based Thermoelectric Generators for Vehicles
Technical Paper
2018-01-0788
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
With the continuing improvements to thermoelectric (TE) materials and systems, their potential for both energy recovery and thermal management is increasingly apparent. Recent developments in materials and notably Skutterudites have allowed materials to be matched much more closely to the working temperatures of a light duty power-train. The choice of TE materials remains a substantial question in the design of a thermoelectric generator (TEG). While the quest for improvements in materials performance continues, the work reported in this paper is characterized by the decision to focus on the refinement of one class of TE materials: Skutterudites. In parallel, the engineering work on the integration of the TE materials into a heat exchanger could continue and be focused on the properties of this class of material. Skutterudites offer the combination of a high working temperature and a competitive electrical output (defined by ZT, the figure of merit). Well matched p-type and n-type skutterudites have been identified and built into modules that have in turn been integrated in an experimental TEG system. Transient engine tests based on legislative drive cycles have been run, exposing the materials to realistic practical conditions. The manufacturing of limited amounts of material in a research programme demands the use of engineering tools to support the prediction of whole system performance. In the reported work, the foundation of prediction is a dynamic model validated experimentally in high temperature transient conditions. The dynamic model is developed in a form that can be executed in real time. A TEG equipped with the limited samples available is operated under practical test conditions. Meanwhile the experimental data forms the boundary conditions for the real time model. Test results generated using a JLR I4 boosted GDI engine have formed the basis for a prediction of 414 W average output during the final phase of the WLTC cycle. The overall cycle average is 120 W which includes the low output initial phases of that cycle. The physical design of the TEG on which the prediction is based has overall dimensions, 450 mm (length) x 350 mm (width) x 120 mm (height) and has the potential to be engineered in different shapes according to requirements and physical constraints.
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Citation
Stobart, R. and Yang, Z., "The Development of Skutterudite-Based Thermoelectric Generators for Vehicles," SAE Technical Paper 2018-01-0788, 2018, https://doi.org/10.4271/2018-01-0788.Also In
References
- EPA, NHTSA, CARB 2016
- Lan , S. , Rouaud , C. , Stobart , R.K. , Chen , R. et al. The Potential of Thermoelectric Generators in Parallel Hybrid Vehicle Applications SAE Technical Paper 2017-01-0189 2017 10.4271/2017-01-0189
- Yang , Z. , Prado-Gonjal , J. , Phillips , M. , Lan , S. et al. Improved Thermoelectric Generator Performance using High Temperature Thermoelectric Materials SAE Technical Paper 2017-01-0121 2017 10.4271/2017-01-0121
- Yang , Z. , Lan , S. , Stobart , R.K. , Winward , E. et al. A Comparison of Four Modelling Techniques for Thermoelectric Generator SAE Technical Paper 2017-01-0144 2017 10.4271/2017-01-0144
- Oftedal , I. Norsk, Geol. Tidssk 8 250 257 1928
- Sales , B.C. , Mandrus , D. , and Williams , R.K. Filled Skutterudite Antimonides: A New Class of Thermoelectric Materials Science 272 1325 1328 1996
- Rull-Bravo , M. , Moure , A. , Fernández , J.F. , and Martín-González , M. Skutterudites as Thermoelectric Materials: Revisited RSC Advances 5 41653 41667 2015
- Poudel , B. , Hao , Q. , Ma , Y. , Lan , Y. et al. High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys Science 320 5876 634 638 2008 10.1126/science.1156446
- Chen , A. , Madan , D. , Wright , P.K. , and Evans , J.W. Dispenser-Printed Planar Thick-Film Thermoelectric Energy Generators Journal of Micromechanics and Microengineering 21 10 104006 2011
- Ziyang , L. , Layani , M. , Zhao , X. , Li , P.T. et al. Fabrication of Flexible Thermoelectric Thin Film Devices by Inkjet Printing Small 10 17 3551 3554 2014
- Orrill , M. and LeBlanc , S. Printed Thermoelectric Materials and Devices: Fabrication Techniques, Advantages, and Challenges Journal of Applied Polymer Science 134 3 2017
- Kumar , S. , Heister , S. D. , Xu X. , Salvador J. R. et al. Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part I: Numerical Modeling and Baseline Model Analysis Journal of Electronic Materials 42 4 665 674 2013 10.1007/s11664-013-271-9
- Crane , D. , Jackson , G. , and Holloway , D. Towards Optimization of Automotive Waste Heat Recovery Using Thermoelectrics SAE Technical Paper 2001-01-1021 2001 10.4271/2001-01-1021
- Yang , Z. , Winward , E. , Lan , S. , and Stobart , R. Optimization of the Number of Thermoelectric Modules in a Thermoelectric Generator for a Specific Engine Drive Cycle SAE Technical Paper 2016-01-0232 2016 10.4271/2016-01-0232
- Eriksson , L. Mean Value Models for Exhaust System Temperatures SAE Technical Paper 2002-01-0374 2002 10.4271/2002-01-0374
- Wijewardane , A. and Stobart , R. Addressing the Heat Exchange Question for Thermo-Electric Generators SAE Technical Paper 2013-01-0550 2013 10.4271/2013-01-0550