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

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        Author
        Peng, Z.J.
        Wang, T.
        He, Y.
        Yang, X.
        Lu, L.
        Attention
        2299/12123
        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 CO 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 CO 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 CO 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 CO emission pay-back times to 2.7years and 0.6years, compared to HEV's 8.5 and 2.7years, respectively.
        Publication date
        2013-05-01
        Published in
        Applied Energy
        Published version
        https://doi.org/10.1016/j.apenergy.2013.01.004
        Other links
        http://hdl.handle.net/2299/12123
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