Wang, Zhaozhi ORCID: 0000-0002-8986-0554, Jia, Fuchen ORCID: 0000-0003-1850-7961 and Galea, E.R. ORCID: 0000-0002-0001-6665 (2010) A generalized relationship between the normalized yields of carbon monoxide and hydrogen cyanide. Fire and Materials, 35 (8). pp. 577-591. ISSN 0308-0501 (Print), 1099-1018 (Online) (doi:https://doi.org/10.1002/fam.1076)

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Abstract

Experimental studies have demonstrated that there are close correlations between the normalized yields of carbon monoxide (CO) and hydrogen cyanide (HCN) from the combustion of materials containing nitrogen. In this paper, a generalized relationship using the stoichiometric oxygen to fuel mass ratio (SOFMR) is derived to represent these correlations. Using this generalized relationship, the predicted yields of HCN for nylon in tube furnace experiments and HCN concentrations in full-scale cable fire tests are in good agreement with the corresponding measured data. The derived relationship is used to analyse the contributions of CO from different materials in a complex fire reconstruction. The generalized relationship is then used to predict HCN concentrations in two full-scale nylon fires and the predicted concentrations are compared with both experimental data and predictions from a flamelet model. Finally, a method to incorporate the generalized relationship within CFD fire simulations to determine HCN (or CO) concentrations based on measurements of CO (or HCN) yields is presented.

Item Type:	Article
Uncontrolled Keywords:	carbon monoxide, hydrogen cyanide, normalized yields, stoichiometric oxygen to fuel mass ratio, equivalence ratio
Subjects:	Q Science > QA Mathematics Q Science > QD Chemistry
Pre-2014 Departments:	School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Fire Safety Engineering Group School of Computing & Mathematical Sciences > Department of Mathematical Sciences
Related URLs:	Publisher Organisation
Last Modified:	15 Nov 2021 22:41
URI:	http://gala.gre.ac.uk/id/eprint/4580

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