Using Directional Flame Thermometers for Measuring Thermal Exposure

Keltner, N.R.; Beck, James V.; Nakos, James T.

doi:10.1520/stp49061s

Cited by 8 publications

(8 citation statements)

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“…The plate thermometer consists of a 100 mm by 100 mm Inconel 600 plate, 0.7 mm thick, with a surface emissivity greater than 0. Pyromark 2500 black [9] or were heavily oxidized [10] to provide consistent radiation properties. The time constant for the directional flame thermometers is estimated approximately 89 s at the start of the test [11].…”

Section: Iso 834 Standard Plate Thermometersmentioning

confidence: 99%

Comparisons of Temperature and Heat Flux in Furnaces Controlled by Different Types of Temperature Sensors

Sultan

2010

Journal of ASTM International

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Section: Iso 834 Standard Plate Thermometersmentioning

confidence: 99%

Comparisons of Temperature and Heat Flux in Furnaces Controlled by Different Types of Temperature Sensors

Sultan

2010

Journal of ASTM International

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“…Two sheathed Type K thermocouples with ungrounded junction are attached to the unexposed faces of the Inconel plates with a thin Nichrome foil spot-welded over the tip of the thermocouples. The exposed surfaces of the Inconel plates are coated with Pyromark 2500 black 10 or are heavily oxidized 11 to provide consistent radiation properties. The time constant for the directional flame thermometers is estimated at approximately 89 seconds at the start of the test 12 .…”

Section: Temperature Sensorsmentioning

confidence: 99%

Performance of Different Temperature Sensors in Standard Fire Resistance Test Furnaces

Sultan

2010

Fire Technol

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1007/s10694-010-0166-9Fire Technology, 46, 4, pp. 853-881, 2010-09-01 Performance of different temperature sensors in standard fire resistance test furnaces Sultan, M. A. 010-0166-9The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. Pour obtenir de plus amples renseignements : http://lois.justice.gc.ca/fr/showtdm/cs/C-42

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“…Cold surface heat fluxes were calculated with assumptions on the heat transfer coefficient. Keltner [9] has used his directional flame thermometer to measure heat flux in various fire applications including furnaces for fire resistance testing. Ingason and Wickstrom [11] have used plate thermometers, which are utilized for furnace control, to predict heat flux from the furnace with some success.…”

Section: Introductionmentioning

confidence: 99%

Quantifying Thermal Boundary Condition Details Using a Hybrid Heat Flux Gage

Lattimer¹,

Diller²

2011

Fire Safety Science - Proceedings of the 10th International Sym

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New methods and experimental techniques were developed in this research to quantify the incident heat flux, absorbed (net) heat flux into a sample, and heat transfer coefficient for samples exposed to mixed mode (radiation and convection) heat transfer typical in fires. Net heat flux into the material was measured at elevated temperatures using a recently developed hybrid heat flux gage, which is both a thermopile type gage as well as a slug calorimeter with an operating temperature >1000 ºC without cooling. The heat transfer coefficient was determined as a function of time using the hybrid gage output only through a reference state approach. The net heat flux and heat transfer coefficient were then used to calculate a cold surface heat flux and the adiabatic surface temperature. Experiments were performed in the cone calorimeter at different heat fluxes to quantify the incident heat flux, net heat flux, heat transfer coefficient, cold surface heat flux, and adiabatic surface temperature as a function of time. Measured heat transfer coefficients were 9-18 % different than values calculated using idealized natural convection correlations. The cold surface heat fluxes determined with the hybrid gage were within 5 % of cold surface heat fluxes measured using a water-cooled Schmidt-Boelter heat flux gage.KEYWORDS: heat flux, heat transfer coefficient, adiabatic surface temperature, cone calorimeter, high temperature heat flux gage, hybrid gage. NOMENCLATURE LISTINGA s area of exposed surface (m 2 ) β thermal expansion coefficient (

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Using Directional Flame Thermometers for Measuring Thermal Exposure

Cited by 8 publications

References 0 publications

Comparisons of Temperature and Heat Flux in Furnaces Controlled by Different Types of Temperature Sensors

Comparisons of Temperature and Heat Flux in Furnaces Controlled by Different Types of Temperature Sensors

Performance of Different Temperature Sensors in Standard Fire Resistance Test Furnaces

Quantifying Thermal Boundary Condition Details Using a Hybrid Heat Flux Gage

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