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Analysis of environmental and economic benefits of integrated Exhaust Energy Recovery (EER) for vehicles

Author

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  • Peng, Zhijun
  • Wang, Tianyou
  • He, Yongling
  • Yang, Xiaoyi
  • Lu, Lipeng

Abstract

Differing from those traditional vehicle exhaust heat recovery systems which just provided thermal energy directly for cabin warming, integrated Exhaust Energy Recovery (EER) which is researched and developed mainly in recent years aims to convert exhaust thermal energy to mechanical or electric energy for increasing the total thermal efficiency and the total power of powertrain. In the study presented in this paper, an analytic model was built for examining the environmental and economic benefits of integrated EER systems. Then the improvement on the total powertrain efficiency and net reduction of CO2 emissions were investigated, in terms of the average vehicle used in the UK. Results show that, for light duty vehicles fitted with thermal cycle EER system, the cost increase could be paid back in 10.1years and CO2 emission could be paid back in just 1.9years, compared to Hybrid Electric Vehicle’s (HEV’s) 11.9years and 1.4years for cost and CO2 emission, respectively. When the annual fuel price increase is considered, the cost pay-back is reduced to 8.1years for EER vehicles and 8.9years for HEVs. Higher mileage vehicles will have more obvious advantage for fitting EER system. When doubled annual mileage is considered, EER system can reduce the cost and CO2 emission pay-back times to 2.7years and 0.6years, compared to HEV’s 8.5 and 2.7years, respectively.

Suggested Citation

  • Peng, Zhijun & Wang, Tianyou & He, Yongling & Yang, Xiaoyi & Lu, Lipeng, 2013. "Analysis of environmental and economic benefits of integrated Exhaust Energy Recovery (EER) for vehicles," Applied Energy, Elsevier, vol. 105(C), pages 238-243.
    • Handle: RePEc:eee:appene:v:105:y:2013:i:c:p:238-243
    DOI: 10.1016/j.apenergy.2013.01.004
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    References listed on IDEAS

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    6. Massaguer, E. & Massaguer, A. & Pujol, T. & Comamala, M. & Montoro, L. & Gonzalez, J.R., 2019. "Fuel economy analysis under a WLTP cycle on a mid-size vehicle equipped with a thermoelectric energy recovery system," Energy, Elsevier, vol. 179(C), pages 306-314.
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    9. Carvalho, Rui & Martins, Jorge & Pacheco, Nuno & Puga, Hélder & Costa, Joaquim & Vieira, Rui & Goncalves, L.M. & Brito, Francisco P., 2023. "Experimental validation and numerical assessment of a temperature-controlled thermoelectric generator concept aimed at maximizing performance under highly variable thermal load driving cycles," Energy, Elsevier, vol. 280(C).
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    11. Agudelo, Andrés F. & García-Contreras, Reyes & Agudelo, John R. & Armas, Octavio, 2016. "Potential for exhaust gas energy recovery in a diesel passenger car under European driving cycle," Applied Energy, Elsevier, vol. 174(C), pages 201-212.
    12. Lan, Song & Smith, Andy & Stobart, Richard & Chen, Rui, 2019. "Feasibility study on a vehicular thermoelectric generator for both waste heat recovery and engine oil warm-up," Applied Energy, Elsevier, vol. 242(C), pages 273-284.
    13. Shu, Gequn & Yu, Guopeng & Tian, Hua & Wei, Haiqiao & Liang, Xingyu, 2014. "A Multi-Approach Evaluation System (MA-ES) of Organic Rankine Cycles (ORC) used in waste heat utilization," Applied Energy, Elsevier, vol. 132(C), pages 325-338.
    14. Ge, Ya & Lin, Yousheng & He, Qing & Wang, Wenhao & Chen, Jiechao & Huang, Si-Min, 2021. "Geometric optimization of segmented thermoelectric generators for waste heat recovery systems using genetic algorithm," Energy, Elsevier, vol. 233(C).

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