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Energies 2018, 11(10), 2670; https://doi.org/10.3390/en11102670

Numerical Investigation of the Chemical Effect and Inhibition Effect Improvement of C3H2F3Br (2-BTP) Using the Perfectly Stirred Reactor Model

1
,
2,* , 3,4,* and 2
1
School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
2
School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
3
School of Resources and Safety Engineering, Central South University, Changsha 410083, China
4
School of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide 5005, Australia
*
Authors to whom correspondence should be addressed.
Received: 18 September 2018 / Revised: 28 September 2018 / Accepted: 30 September 2018 / Published: 8 October 2018
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Abstract

The overall chemical rate and chemical effect of CF3Br, 2-BTP and 2-BTP/CO2 with hydrocarbon flames are calculated using the perfectly stirred reactor (PSR) model. The chemical effects of CF3Br with CH4/air flames always inhibit combustion. The chemical saturation concentration of CF3Br in stoichiometric and lean (Φ = 0.6) CH4/air flames at 298 K and 1 bar is roughly 2.5% and 0.8%, respectively. The overall chemical rate of 2-BTP with moist C3H8/air flames is always less than the uninhibited condition and fluctuates with sub-inerting agent additions. The net chemical effect variation of 2-BTP is more complicated than experimented and calculated flame speeds with 2-BTP added to lean hydrocarbon flames. There are negative chemical effects (chemical combustion effects) with certain sub-inerting 2-BTP concentrations (0.015 ≤ Xa ≤ 0.034), which result in the experimented unwanted combustion enhancement in lean moist C3H8/air flames. CO2 can obviously improve the inhibition effect of 2-BTP in lean moist C3H8/air flames, driving negative chemical effects (enhance combustion) into positive chemical effects (inhibit combustion) with lean moist C3H8/air flames. No enhanced combustion would occur with the blends (2-BTP/CO2) when CO2 addition is larger than 4% in Φ = 0.6 moist C3H8/air flames at 298 K and 1 bar. View Full-Text
Keywords: perfectly stirred reactor model; chemical effect; saturation effectiveness; synergistic effect perfectly stirred reactor model; chemical effect; saturation effectiveness; synergistic effect
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Li, P.; Ke, B.; Zhang, J.; Chen, X. Numerical Investigation of the Chemical Effect and Inhibition Effect Improvement of C3H2F3Br (2-BTP) Using the Perfectly Stirred Reactor Model. Energies 2018, 11, 2670.

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