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A new model based on adiabatic flame temperature for evaluation of the upper flammable limit of alkane-air-CO2 mixtures

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journal contribution
posted on 2018-02-05, 10:40 authored by Mingqiang Wu, Gequn Shu, Rui Chen, Hua Tian, Xueying Wang, Yue Wang
© 2017 Elsevier B.V. For security issue of alkane used in Organic Rankine Cycle, a new model to evaluate the upper flammability limits for mixtures of alkanes, carbon dioxide and air has been proposed in present study. The linear relationship was found at upper flammability limits between molar fraction of diluent in alkane-CO 2 mixture and calculated adiabatic flame temperature. The prediction ability of the variable calculated adiabatic flame temperature model that incorporated the linear relationship above is greatly better than the models that adopted the fixed calculated adiabatic flame temperature at upper flammability limit. The average relative differences between results predicted by the new model and observed values are less than 3.51% for upper flammability limit evaluation. In order to enhance persuasion of the new model, the observed values of n-butane-CO 2 and isopentane-CO 2 mixtures measured in this study were used to confirm the validity of the new model. The predicted results indicated that the new model possesses the capacity of practical application and can adequately provide safe non-flammable ranges for alkanes diluted with carbon dioxide.

Funding

This work was supported by a grant from the National Natural Science Foundation of China (No. 51676133).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Journal of Hazardous Materials

Volume

344

Pages

450 - 457

Citation

WU, M. ...et al., 2017. A new model based on adiabatic flame temperature for evaluation of the upper flammable limit of alkane-air-CO2 mixtures. Journal of Hazardous Materials, 344, pp. 450-457.

Publisher

© Elsevier

Version

  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2017-10-16

Publication date

2017-10-17

Notes

This paper was accepted for publication in the journal Journal of Hazardous Materials and the definitive published version is available at https://doi.org/10.1016/j.jhazmat.2017.10.030

ISSN

0304-3894

eISSN

1873-3336

Language

  • en