Study of Diverse Leg Geometry Effect on the Performance of Segmented Thermoelectric Generator with the Same Leg Volume
DOI:
https://doi.org/10.48048/tis.2023.6099Keywords:
Segmented thermoelectric generator, Variable leg geometry, Same leg volume, Length ratio, Power, Efficiency, PerformanceAbstract
When developing any product, one of the factors that determine its price is the volume of the product. In this paper, the effect of various geometrical forms on the performance of a segmented TEGs with the same leg volume was performed. For this purpose, a numerical study was performed using the finite element method (FEM) for different geometrical shapes by considering 3 following forms: Rectangular-leg, Pin-leg, and Cone-leg. In each region, Bismuth Telluride was deposited on the cold side while Lead Telluride was placed on the hot side. Two cases were studied. In the 1st case, the 2 regions’ the same length, for n and p types, which constitute the leg was taken. While in the 2nd case, all forms of the same volume were evaluated by taking a variable leg length and a fixed cross-sectional area of the hot side. The optimal ratios of the Bismuth Telluride lengths in and regions for the Rect-leg, Pin-leg, and Cone-leg were studied. The obtained results showed that the Rectangular-leg model in the 1st case presents the highest output power and efficiency with about 0.3019 watt and 12.47 % with leg length values of ( and ) 1 and 4.5 mm, respectively. Based on the simulation results, we conclude that the leg form and the length ratio influence the performance of the segmented TEGs. The findings indicate that the Rect-leg model presents the best performance.
HIGHLIGHTS
- Difference of the internal temperature distribution with the variable leg geometry
- The effect of the segmented thermoelectric leg length ratios on internal resistance and thermal conductance
- In the segmented TEGs Efficiency decreases with increasing the length ratio of materials in lower temperature range
- Increasing the performance in the segmented TEGs compared to the traditional TEG
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M Muthumari, M Manjula, K Pradheepa, M Maaza and P Veluswamy. Revealing enhanced thermoelectric performance of tin-bismuth-telluride materials. Bull. Mater. Sci. 2022; 45, 167.
S Mahmoudinezhad, A Rezania and LA Rosendahl. Behavior of hybrid concentrated photovoltaic-thermoelectric generator under variable solar radiation. Energ. Convers. Manag. 2017; 164, 443-52.
H Ali and BS Yilbas. Innovative design of a thermoelectric generator of extended legs with tapering and segmented pin configuration: Thermal performance analysis. Appl. Therm. Eng. 2017; 123, 74-91.
CC Maduabuchi, MN Eke and CA Mgbemene. Solar power generation using a two-stage X-leg thermoelectric generator with high-temperature materials. Int. J. Energ. Res. 2021; 45, 13163-81.
C Maduabuchi, K Ejenakevwe, A Ndukwe and C Mgbemene. High performance solar thermoelectric generator using asymmetrical variable leg geometries. E3S Web Conferences 2021; 239, 00005.
C Maduabuchi, KA Ejenakevwe, I Jacobs, N Agwu and C Mgbemene. Analysis of a two-stage variable leg geometry solar thermoelectric generator. In: Proceedings of the 2nd African International Conference on Industrial Engineering and Operations Management, Harare, Zimbabwe. 2021.
PE Ruiz-Ortega, MA Olivares-Robles and CA Badillo-Ruiz. Transient thermal behavior of a segmented thermoelectric cooler with variable cross-sectional areas. Int. J. Energ. Res. 2021; 45, 19215-25.
G Li, X Zhao, YI Jin, X Chen, JIE Ji and S Shittu. Performance analysis and discussion on the thermoelectric element footprint for PV - TE maximum power generation. J. Electron. Mater. 2018; 47, 5344-51.
S Shittu, G Li, X Zhao and X Ma. Series of detail comparison and optimization of thermoelectric element geometry considering the PV effect. Renew. Energ. 2019; 130, 930-42.
ARM Siddique, F Kratz, S Mahmud and BV Heyst. Energy conversion by nanomaterial-based trapezoidal-shaped leg of thermoelectric generator considering convection heat transfer effect. J. Energ. Resour. Tech. 2019, 141, 082001.
ARM Siddique, K Venkateshwar, S Mahmud and BV Heyst. Performance analysis of bismuth-antimony-telluride-selenium alloy-based trapezoidal-shaped thermoelectric pallet for a cooling application. Energ. Convers. Manag. 2020; 222, 113245.
S Shittu, G Li, X Tang, X Zhao, X Ma and A Badiei. Analysis of thermoelectric geometry in a concentrated photovoltaic-thermoelectric under varying weather conditions. Energy 2020; 202, 117742.
OI Ibeagwu. Modelling and comprehensive analysis of TEGs with diverse variable leg geometry. Energy 2019; 180, 90-106.
AL Khalil, A Elhassnaoui, S Yadir, O Abdellatif, Y Errami and S Sahnoun. Performance comparison of TEGs for diverse variable leg geometry with the same leg volume. Energy 2021; 224, 119967.
Q Doraghi, N Khordehgah, A Zabnienska-Góra, L Ahmad, L Norman, D Ahmad and H Jouhara. Investigation and computational modelling of variable teg leg geometries. ChemEngineering 2021; 5, 45.
AS Al-Merbati, BS Yilbas and AZ Sahin. Thermodynamics and thermal stress analysis of thermoelectric power generator: Influence of pin geometry on device performance. Appl. Therm. Eng. 2013; 50, 683-92.
PE Ruiz-Ortega, MA Olivares-Robles and OYEMD Oca. Segmented thermoelectric generator under variable pulsed heat input power. Entropy 2019; 21, 929.
Z Ye-Qi Zhang, J Sun, W Guang-Xu and W Tian-Hu. Advantage of a thermoelectric generator with hybridization of segmented materials and irregularly variable cross-section design. Energies 2022; 15, 2944.
CA Badillo-Ruiz, MA Olivares-Robles and PE Ruiz-Ortega. Performance of segmented thermoelectric cooler micro-elements with different geometric shapes and temperature-dependent properties. Entropy 2018; 20, 118.
R Kumar, C Maduabuchi, R Lamba, M Vashishtha and S Upadhyaya. Transient optimization of a segmented variable area leg geometry-based solar thermoelectric generator. In: Proceedings of the 2021 IEEE Green Energy and Smart Systems Conference (IGESSC), Long Beach, California. 2021.
H Tian, X Sun, Q Jia, X Liang, G Shu and X Wang. Comparison and parameter optimization of a segmented thermoelectric generator by using the high temperature exhaust of a diesel engine. Energy 2015; 84, 121-30.
H Liu, J Meng, X Wang and W Chen. A new design of solar thermoelectric generator with combination of segmented materials and asymmetrical legs. Energ. Convers. Manag. 2018; 175, 11-20.
G Zhang, L Fan, Z Niu, K Jiao, H Diao, Q Du and G Shu. A comprehensive design method for segmented thermoelectric generator. Energ. Convers. Manag. 2015; 106, 510-19.
H Tian, N Jiang, Q Jia, X Sun, G Shu and X Liang. Comparison of segmented and traditional thermoelectric generator for waste heat recovery of diesel engine. Energ. Procedia 2015; 75, 590-6.
Y Ge, Z Liu, H Sun and W Liu. Optimal design of a segmented thermoelectric generator based on three-dimensional numerical simulation and multi-objective genetic algorithm. Energy 2018; 147, 1060-9.
S Shittu, G Li, Q Xuan, X Zhao, X Ma and Y Cui. Electrical and mechanical analysis of a segmented solar thermoelectric generator under non-uniform heat flux. Energy 2020; 199, 117433.
S Shittu, G Li, X Zhao, X Ma, YG Akhlaghi and E Ayodele. High performance and thermal stress analysis of a segmented annular thermoelectric generator. Energ. Convers. Manag. 2019; 184, 180-93.
RO Suzuki, KO Ito and S Oki. Analysis of the performance of thermoelectric modules under concentrated radiation heat flux. J. Electron. Mater. 2016; 45, 1827-35.
JD Angelo, lD Case, N Matchanov, CI Wu, TP Hogan, J Barnard, C Cauchy, T Hendricks and MG Kanatzidis. Electrical, thermal, and mechanical characterization of novel segmented-leg thermoelectric modules. J. Electron. Mater. 2011; 40, 2051-62.
A El-abidi, S Yadir, F Chanaa, M Benhmida, H Amiry, H Bousseta and H Ezzaki. Modeling and simulation of a modified solar air heater destined to drying the gelidium sesquipedale. Int. J. Renew. Energ. Res. 2018; 8, 2003-13.
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