The relation between thermal protection performance and total heat loss of multi-layer flame resistant fabrics with the effect of moisture considered

Xin, Lisha; Li, Jun

doi:10.1007/s12221-016-5360-z

Cited by 6 publications

(9 citation statements)

References 23 publications

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“…From fig. 3(b), the effect of air-gap on degree of skin burn is linearly changed with increasing thickness, indicating thick air-gap could absorb more heat energy from heat conduction and heat radiation, and air-gap plays an important role in this microsystem [12,13]. The effect of the fabric thickness is investigated in this part, fig.…”

Section: Resultsmentioning

confidence: 96%

“…when T(τ) > 44 (13) where P = 3.1•10 98 s -1 is the accepted values for the pre-exponential factor, the ratio of the activation energy to the universal gas constant as ∆E/R = 75000 K. The Ω(t) is a highly non-linear function and the generally used definitions of burns in terms of Ω(t) are: first degree burn occurs at Ω(t) = 0.53, second degree burn at Ω(t) = 1.0, and third degree burn at Ω(t) = 10 4 .…”

Section: Determining Degree Of Skin Burnmentioning

confidence: 99%

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Numerical prediction of degree of skin burn in thermal protective garment-air gap-human body system

et al. 2017

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Thermal protective garment has been deemed as an important shielding against fire hazard and inflammable gas leakage. The coupling model of thermal protective garment, air-gap, and human body has been widely established, but the heat transfer in air-gap was commonly simplified, resulting in inaccurate results. This paper suggests a coupling heat transfer model of the microsystem consisting of thermal protective garment, air-gap, and human body, taking into account the heat transfer of air-gap, and human skin, its numerical solution is obtained by the finite element method. The degree of skin burn could be extracted and determined from the model, and the effect of heat source, fabric thickness, and air-gap thickness on the degree of skin burn are investigated.

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Section: Resultsmentioning

confidence: 96%

Section: Determining Degree Of Skin Burnmentioning

confidence: 99%

Numerical prediction of degree of skin burn in thermal protective garment-air gap-human body system

et al. 2017

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“…Firefighter protective clothing is thermal protective clothing, which protects against thermal radiation, hot gas convection, and heat conducted from hot surfaces [3]. It usually consists of three main layers: an outer shell, a moisture barrier and a thermal liner [4]. The selection of the best possible fabric combination is the key step in firefighter protective clothing design.…”

Section: Introductionmentioning

confidence: 99%

İtfaiyeciler için Akıllı Bir Ceket Tasarımı

Dursun¹,

Bulgun²,

Şenol³

et al. 2019

J Text Eng

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A firefighter protective clothing consists often of three-layered fabric structure; an outer shell, a moisture barrier and a thermal liner. In this study, an innovative firefighter protective jacket is proposed, designed to protect firefighters within the thermal environment. The protective performances of different three-layered fabrics were initially tested, and the most appropriate fabric combination for firefighter protective clothing was determined. After the fabric selection process, a firefighter jacket was designed and produced by using the most appropriate fabric combination. A specially designed electronic system equipped with related sensors was integrated to the jacket. Finally, the designed firefighter jacket with integrated sensors was tested in a heating oven.

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“…Thus, the thermo-physiological comfort of thermal protective garments is mainly determined by their heat and water vapor resistances. [14][15][16] In fact, heat and water vapor transfer is a complex transfer progress from the skin to the environment, when an air gap is presented in the multilayer fabric system. Generally speaking, heat transfer between the human skin and fabric system could pass by heat conduction, heat convection, and heat radiation when a temperature gradient exists between skin and ambient temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Air Gap Entrapped in Firefighter Protective Clothing on Thermal Resistance and Evaporative Resistance

2018

Autex Research Journal

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Heat and water vapor transfer behavior of thermal protective clothing is greatly influenced by the air gap entrapped in multilayer fabric system. In this study, a sweating hot plate method was used to investigate the effect of air gap position and size on thermal resistance and evaporative resistance of firefighter clothing under a range of ambient temperature and humidity. Results indicated that the presence of air gap in multilayer fabric system decreased heat and water vapor transfer abilities under normal wear. Moreover, the air gap position slightly influenced the thermal and evaporative performances of the firefighter clothing. In this study, the multilayer fabric system obtained the highest thermal resistance, when the air space was located at position B. Furthermore, the effect of ambient temperature on heat and water vapor transfer properties of the multilayer fabric system was also investigated in the presence of a specific air gap. It was indicated that ambient temperature did not influence the evaporative resistance of thermal protective clothing. A thermographic image was used to test the surface temperature of multilayer fabric system when an air gap was incorporated. These results suggested that a certain air gap entrapped in thermal protective clothing system could affect wear comfort.

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The relation between thermal protection performance and total heat loss of multi-layer flame resistant fabrics with the effect of moisture considered

Cited by 6 publications

References 23 publications

Numerical prediction of degree of skin burn in thermal protective garment-air gap-human body system

Numerical prediction of degree of skin burn in thermal protective garment-air gap-human body system

İtfaiyeciler için Akıllı Bir Ceket Tasarımı

Effect of Air Gap Entrapped in Firefighter Protective Clothing on Thermal Resistance and Evaporative Resistance

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