Chen_Accepted_2017-10-16.pdf (1.11 MB)
A new model based on adiabatic flame temperature for evaluation of the upper flammable limit of alkane-air-CO2 mixtures
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 MaterialsVolume
344Pages
450 - 457Citation
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
© ElsevierVersion
- 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
2017-10-16Publication date
2017-10-17Notes
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.2017.10.030ISSN
0304-3894eISSN
1873-3336Publisher version
Language
- en