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Thermoelectric generator for industrial gas phase waste heat recovery

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  • Meng, Fankai
  • Chen, Lingen
  • Feng, Yuanli
  • Xiong, Bing

Abstract

A technical solution recycling exhaust gas sensible heat based on thermoelectric power generation is proposed by using finite time thermodynamics. The effects of some key parameters such as exhaust gas inlet temperature, exhaust gas and cooling water heat transfer coefficient on the optimum length of the thermoelectric elements are analyzed. It is found that the gas temperature drops rapidly because of the small specific heat of the exhaust gas. Enhancing the heat transfer of gas can effectively improve the power, but not the efficiency. Exhaust gas inlet temperature and transfer coefficient have significant effects on the optimal thermoelectric element length. Due to the highest hot surface operating temperature limit 200 °C, the optimal length of the thermoelectric elements is about 2 mm. About 1.47 kW electrical energy can be produced per square meter and the conversion efficiency of 4.5% can be achieved for exhaust gas at 350 °C. The payback period of the waste heat recovery device is about 4 years for the price and performance of thermoelectric products made in China.

Suggested Citation

  • Meng, Fankai & Chen, Lingen & Feng, Yuanli & Xiong, Bing, 2017. "Thermoelectric generator for industrial gas phase waste heat recovery," Energy, Elsevier, vol. 135(C), pages 83-90.
    • Handle: RePEc:eee:energy:v:135:y:2017:i:c:p:83-90
    DOI: 10.1016/j.energy.2017.06.086
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    9. F. P. Brito & João Silva Peixoto & Jorge Martins & António P. Gonçalves & Loucas Louca & Nikolaos Vlachos & Theodora Kyratsi, 2021. "Analysis and Design of a Silicide-Tetrahedrite Thermoelectric Generator Concept Suitable for Large-Scale Industrial Waste Heat Recovery," Energies, MDPI, vol. 14(18), pages 1-21, September.
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    11. Chen, Lingen & Lorenzini, Giulio, 2023. "Heating load, COP and exergetic efficiency optimizations for TEG-TEH combined thermoelectric device with Thomson effect and external heat transfer," Energy, Elsevier, vol. 270(C).
    12. Zhang, Ruonan & Cai, Jingyong & Zhang, Tao & Shi, Zhengrong, 2023. "Performance analysis and optimization of a TEG-based compression hydrogen storage waste heat recovery system," Renewable Energy, Elsevier, vol. 219(P2).
    13. Jaber, Hassan & Khaled, Mahmoud & Lemenand, Thierry & Murr, Rabih & Faraj, Jalal & Ramadan, Mohamad, 2019. "Domestic thermoelectric cogeneration drying system: Thermal modeling and case study," Energy, Elsevier, vol. 170(C), pages 1036-1050.
    14. Kim, Tae Young & Kim, Junghwan, 2018. "Assessment of the energy recovery potential of a thermoelectric generator system for passenger vehicles under various drive cycles," Energy, Elsevier, vol. 143(C), pages 363-371.
    15. Rui Quan & Tao Li & Yousheng Yue & Yufang Chang & Baohua Tan, 2020. "Experimental Study on a Thermoelectric Generator for Industrial Waste Heat Recovery Based on a Hexagonal Heat Exchanger," Energies, MDPI, vol. 13(12), pages 1-14, June.
    16. Ramadan, Mohamad & Murr, Rabih & Khaled, Mahmoud & Olabi, Abdul Ghani, 2018. "Mixed numerical - Experimental approach to enhance the heat pump performance by drain water heat recovery," Energy, Elsevier, vol. 149(C), pages 1010-1021.
    17. Zhao, Qin & Li, Jianming & Zhang, Houcheng, 2024. "Synergizing perovskite solar cell and thermoelectric generator for broad-spectrum utilization: Model updating, performance assessment and optimization," Energy, Elsevier, vol. 289(C).
    18. Chen, Lingen & Yang, Bo & Feng, Huijun & Ge, Yanlin & Xia, Shaojun, 2020. "Performance optimization of an open simple-cycle gas turbine combined cooling, heating and power plant driven by basic oxygen furnace gas in China's steelmaking plants," Energy, Elsevier, vol. 203(C).
    19. Luo, Ding & Wang, Ruochen & Yu, Wei & Zhou, Weiqi, 2019. "Performance evaluation of a novel thermoelectric module with BiSbTeSe-based material," Applied Energy, Elsevier, vol. 238(C), pages 1299-1311.

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