Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Calculation Technique CSN for Smoke Layer Interface Assessment

Jiri Pokorny
* ORCID logo ,
Marek Podkul
,
Lenka Brumarova
,
Dagmar Dlouha
ORCID logo ,
Zuzana Heinzova
,
Katerina Kubricka
,
Dawid Szurgacz
ORCID logo ,
Marianna Tomaskova
,
Vladimir Vlcek
,
Sergey Zhironkin
ORCID logo
Version 1 : Received: 19 December 2023 / Approved: 19 December 2023 / Online: 19 December 2023 (13:55:05 CET)

How to cite: Pokorny, J.; Podkul, M.; Brumarova, L.; Dlouha, D.; Heinzova, Z.; Kubricka, K.; Szurgacz, D.; Tomaskova, M.; Vlcek, V.; Zhironkin, S. Calculation Technique CSN for Smoke Layer Interface Assessment. Preprints 2023, 2023121464. https://doi.org/10.20944/preprints202312.1464.v1 Pokorny, J.; Podkul, M.; Brumarova, L.; Dlouha, D.; Heinzova, Z.; Kubricka, K.; Szurgacz, D.; Tomaskova, M.; Vlcek, V.; Zhironkin, S. Calculation Technique CSN for Smoke Layer Interface Assessment. Preprints 2023, 2023121464. https://doi.org/10.20944/preprints202312.1464.v1

Abstract

Fires are a significant threat to people, property, and environment. One of the requirements for the buildings during fires is ensuring the safe evacuation of persons. The evacuation assessment has usually been based on a comparison of the Required Safe Egress Time (RSET) and the Available Safe Egress Time (ASET). One of the important factors influencing the safe evacuation of persons is smoke, which is an important accompanying phenomenon in the burning of polymers. The smoke layer interface is one basic barrier for effective evacuation. The current calculation technique for assessing the smoke layer interface in the Czech Republic is unsatisfactory. For this reason, a calculation technique CSN has been derived, which has been compared with the selected simple calculation techniques, the zone fire model Consolidated Model of Fire and Smoke Transport (CFAST) and the field type model Fire Dynamics Simulator (FDS). The CSN technique was also compared with a real large-scale experiment. The data were also subjected to statistical evaluation using the root mean square error method (RMSE). The deviations between the NFPA, ISO and CSN calculation techniques, the CFAST and FDS fire models and the implemented experiment ranged from 0.05 to 2.41. The established deviations indicate that the calculation technique CSN will be practically usable.

Keywords

fire; evacuation; smoke layer interface; calculation techniques; CFAST model, FDS model; experiment

Subject

Social Sciences, Safety Research

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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