Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery

In the waste heat utilization of automobile exhaust, the tubular thermoelectric generator (TTEG) has structural advantages compared with the flat-plate thermoelectric generator. A kind of TTEG that is composed of Bi0.5Sb1.5Te3 and Ni conical rings alternately attracts researchers' attention, an...

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Autores principales:	Chen Leisheng, Yu Zuyi, Zhang Jingwen, Lee Jaeyoung
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/233dfe3c1bbe445bb751f0168ea4f607
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spelling	oai:doaj.org-article:233dfe3c1bbe445bb751f0168ea4f6072021-11-12T11:44:34ZNumerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery2267-124210.1051/e3sconf/202132102003https://doaj.org/article/233dfe3c1bbe445bb751f0168ea4f6072021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_02003.pdfhttps://doaj.org/toc/2267-1242In the waste heat utilization of automobile exhaust, the tubular thermoelectric generator (TTEG) has structural advantages compared with the flat-plate thermoelectric generator. A kind of TTEG that is composed of Bi0.5Sb1.5Te3 and Ni conical rings alternately attracts researchers' attention, and it generates electrical power based on the transverse thermoelectric effect. However, the electrical performance of such TTEG still needs to be improved for industrial utilization. In this study, the performance of TTEG was optimized through numerical simulation by changing its related structural parameters, including the tilt angle, the thickness of the conical ring, and the relative content of Ni. It is confirmed that the optimal tilt angle with maximum open-circuit voltage (OCV) is 27.3°; on this basis, it is found that a thinner thickness corresponds to a larger OCV; furthermore, when using a conical rings’ thickness of 0.75 mm and increasing the relative content of Ni in the Bi0.5Sb1.5Te3/Ni layered pair from 10% to 90%, the OCV decreases from 198mV to 105mV while the power density increases from 413W/m2 to 1350W/m2. It is believed that these findings can help to develop TTEGs with better electrical performance.Chen LeishengYu ZuyiZhang JingwenLee JaeyoungEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 02003 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Chen Leisheng Yu Zuyi Zhang Jingwen Lee Jaeyoung Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery
description	In the waste heat utilization of automobile exhaust, the tubular thermoelectric generator (TTEG) has structural advantages compared with the flat-plate thermoelectric generator. A kind of TTEG that is composed of Bi0.5Sb1.5Te3 and Ni conical rings alternately attracts researchers' attention, and it generates electrical power based on the transverse thermoelectric effect. However, the electrical performance of such TTEG still needs to be improved for industrial utilization. In this study, the performance of TTEG was optimized through numerical simulation by changing its related structural parameters, including the tilt angle, the thickness of the conical ring, and the relative content of Ni. It is confirmed that the optimal tilt angle with maximum open-circuit voltage (OCV) is 27.3°; on this basis, it is found that a thinner thickness corresponds to a larger OCV; furthermore, when using a conical rings’ thickness of 0.75 mm and increasing the relative content of Ni in the Bi0.5Sb1.5Te3/Ni layered pair from 10% to 90%, the OCV decreases from 198mV to 105mV while the power density increases from 413W/m2 to 1350W/m2. It is believed that these findings can help to develop TTEGs with better electrical performance.
format	article
author	Chen Leisheng Yu Zuyi Zhang Jingwen Lee Jaeyoung
author_facet	Chen Leisheng Yu Zuyi Zhang Jingwen Lee Jaeyoung
author_sort	Chen Leisheng
title	Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery
title_short	Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery
title_full	Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery
title_fullStr	Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery
title_full_unstemmed	Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery
title_sort	numerical investigation on the electrical performance optimization of a tubular thermoelectric generator for waste heat recovery
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/233dfe3c1bbe445bb751f0168ea4f607
work_keys_str_mv	AT chenleisheng numericalinvestigationontheelectricalperformanceoptimizationofatubularthermoelectricgeneratorforwasteheatrecovery AT yuzuyi numericalinvestigationontheelectricalperformanceoptimizationofatubularthermoelectricgeneratorforwasteheatrecovery AT zhangjingwen numericalinvestigationontheelectricalperformanceoptimizationofatubularthermoelectricgeneratorforwasteheatrecovery AT leejaeyoung numericalinvestigationontheelectricalperformanceoptimizationofatubularthermoelectricgeneratorforwasteheatrecovery
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Numerical Investigation on the Electrical Performance Optimization of a Tubular Thermoelectric Generator for Waste Heat Recovery

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