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Author(s): Jorge A. Fonseca
Soraia F. Neves
João Bernardo Campos
Title: Thermal performance of a PCM firefighting suit considering transient periods of fire exposure, post - fire exposure and resting phases
Issue Date: 2021-07-20
Abstract: Firefighting scenarios may be characterized by various transient periods (i.e. phases), which consist of diverse environmental conditions. Firefighters usually encounter fire exposure, post fire exposure and resting phases. Development of new and improved protective clothing must be able to provide protection throughout all these phases, as burnouts may still occur after fire exposure due to accumulation of heat in the garment. The incorporation of phase change materials (PCMs) in firefighting garments has been shown to minimize the potential of heat hazards only during fire exposure. Thus to get more knowledge on their thermal performance, in the present study, the effect of PCM incorporation in post fire and resting phases were also numerically studied. The numerical code was validated for all phases. Five potential PCM candidates were considered. Exposure phases were characterized by high- medium and low- heat flux intensities (84, 12 and 5 kW.m(-2)) with variable exposure times whilst post -exposure and resting phases where characterized by different wind speeds (i.e. ambient convective coefficients). Optimal PCM masses, times to second and third - degree burns as well as PCM suit cooling times were calculated to reflect thermal protective performance in each respective phase. The data generated allows for PCM short-listing from a set of potential PCM candidates along with its geometrical parameters, considering a wide range of characteristics of the various phases that consist a typical firefighting scenario.
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Prevenção e Combate a Incêndios Florestais/PCIF/SSO/0106/2018/Desenvolvimento de um casaco de bombeiro inovador/DIF-Jacket
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/UIDB/00532/2020_UIDP/00532/2020/Financiamento Plurianual 2020-2023 da Unidade de I&D CEFT - Centro de Estudos de Fenómenos de Transporte/CEFT
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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