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The Influence of Thermoelectric Materials and Operation Conditions on the Performance of Thermoelectric Generators for Automotive
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
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An automotive engine can be more efficient if thermoelectric generators (TEG) are used to convert a portion of the exhaust gas enthalpy into electricity. Due to the relatively low cost of the incoming thermal energy, the efficiency of the TEG is not an overriding consideration. Instead, the maximum power output (MPO) is the first priority. The MPO of the TEG is closely related to not only the thermoelectric materials properties, but also the operating conditions. This study shows the development of a numerical TEG model integrated with a plate-fin heat exchanger, which is designed for automotive waste heat recovery (WHR) in the exhaust gas recirculation (EGR) path in a diesel engine. This model takes into account the following factors: the exhaust gas properties’ variation along the flow direction, temperature influence on the thermoelectric materials, thermal contact effect, and heat transfer leakage effect. Its accuracy has been checked using engine test data. Based on the simulation results, the equation for MPO was fitted to thermoelectric material properties, which include Seebeck coefficient αTE, thermal conductivity κTE, electrical resistivity ρTE, and operating conditions, which include the exhaust gas flow rate fh and gas-in temperature TIn. It is found that the regression equation provides an excellent prediction of the MPO when the TEG is used in EGR path. The sensitivity analysis based on the regression equation revealed that MPO is most sensitive to αTE and TIn, and least sensitive to fh. It has also been discovered that the MPO is relatively less sensitive to the fh when TEG is working at high flow rates.
CitationLan, S., Yang, Z., Stobart, R., and Winward, E., "The Influence of Thermoelectric Materials and Operation Conditions on the Performance of Thermoelectric Generators for Automotive," SAE Technical Paper 2016-01-0219, 2016, https://doi.org/10.4271/2016-01-0219.
- Ikoma , K. ; Munekiyo , M. ; Furuya , K. ; Kobayashi , M. ; Izumi , T. ; Shinohara , K. Thermoelectric Module and Generator for Gasoline Engine Vehicles Seventeenth International Conference on Thermoelectrics 1998 464 467 IEEE Conference Publications
- Kushch , A.S. ; Bass , J.C. ; Ghamaty , S. ; Eisner , N.B. Thermoelectric Generator for Heavy Diesel Trucks Proceedings ICT2001 422 430 IEEE Conference Publications
- Hendricks , T.J. ; Lustbader , J.A. Advanced Thermoelectric Power System Investigations for Light-Duty and Heavy Duty Applications: Part 11 Twenty-First International Conference on Thermoelectrics 2002 387 394 IEEE Conference Publications
- Min , Gao ; Rowe , D.M. Optimization of thermoelectric module geometry for waste heat electric power generation Journal of Power Sources 1992 38 3 253 259
- Sahin , Ahmet Z. ; Yilbas , Bekir S. Thermodynamic irreversibility and performance characteristics of thermoelectric power generator Energy June 15 2013 55 899 6
- Wu , Chih Analysis of waste-heat thermoelectric power generators Applied Thermal Engineering 16 1 January 1996 63 69
- Chien , Heng-Chieh ; Chu , En-Ting ; Hsieh , Huey-Lin ; Huang , Jing-Yi ; Wu , Sheng-Tsai ; Dai , Ming-Ji ; Liu , Chun-Kai ; Yao , Da-Jeng Evaluation of temperature dependent effective material properties and performance of a thermoelectric module Journal of Electronic Materials 2013 42 7 2362 2370
- Jang , Jiin-Yuh ; Tsai , Ying-Chi Optimization of thermoelectric generator module spacing and spreader thickness used in a waste heat recovery system Applied Thermal Engineering 2013 51 1-2 677 689
- Esarte , G Min , and Rowe DM Modelling heat ex-changers for thermoelectric generators Journal of Power Sources 93 1 72 76 2001
- Rohsenow W.M. , Hartnett J.P. , and Cho Y.I. Handbook of heat transfer McGraw-Hill handbooks McGraw-Hill 1998
- Seber G. A. F. (George Arthur Frederick) 1938 Wild C. J (Christopher John) Nonlinear regression Hoboken, NJ Wiley-Interscience 2003
- Principe , J. C. , Euliano , N. R. , & Lefebre , W. C. 2000 Neural and adaptive systems: Fundamentals through simulations New York John Wiley and Sons