From the category archives:

Theory

Electro Optical Industries BB Emissivity Coatings

November 5, 2009

Electro Optical Industries (EOI) uses one of two high emissivity coatings on the surface of its blackbodies.
The EOI mid-temperature coating is used on both cavity and flat plate blackbodies that have a maximum operating temperatures of up to 210 °C.

Read the rest by visiting their webpage at: www.electro-optical.com/html/bb_rad/emissivity/emis_data.asp

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Blackbody Emissivity Primer

October 30, 2009

From the Electro-Optical Industries website:

“Effective emissivity is the ratio of the total amount of energy exiting a blackbody to that which is predicted by Planck’s law. This is the value most frequently referred to as “emissivity”. Effective emissivity of a cavity type blackbody will normally be much higher than the surface emissivity due to the [...]

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Measurements of Pool-Fire Temperature Using IR Technique. (419 K)

May 12, 2009

By Qian, C.; Saito, K.
Ref: Combustion Institute/Central and Western States (USA) and Combustion Institute/Mexican National Section and American Flame Research Committee. Combustion Fundamentals and Applications. Joint Technical Meeting. Proceedings. April 23-26, 1995, San Antonio, TX, Gore, J. P., Editor(s), 81-86 pp, 1995.
Sponsor: National Institute of Standards and Technology, Gaithersburg, MD
Abstract:
We made an attempt to measure [...]

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Modeling of the thermal radiative behavior of rough coatings

January 6, 2009

Abstract 675 – Monte Carlo modeling of the thermal radiative behavior of rough coatings
Presented in the session Photothermal Techniques. Theory and Modeling at the 18th European Conference on Thermophysical Properties, Pau, France 31 Aug-4 Sep 2008
By:
Mr Hector Gomarta*+
Dr Benoit Rousseaua
Dr Domingos De Sousa Menesesa
Dr Patrick Echeguta
a CNRS Orléans
CEMHTI
Site Haute Température
1D avenue de la Recherche [...]

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Handbook of OSML Libraries: Emittance

December 26, 2008

CRMHT – CNRS Centre de Recherche sur les Matériaux à Haute Température, Orléans, France
Mesure indirecte de l’émittance (Includes sample data for Silicon Dioxide)
Mesure de la réflectivité et de la transmissivité normales spectrales (10 à 40 000 cm-1 soit 1 000 à 0,25 µm).
L’émissivité normale spectrale se déduit indirectement par calcul de ces deux grandeurs par [...]

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Emissivity Calculator Online

December 12, 2008

The Pyrometer Instrument Company, manufacturers of the Pyrolaser® and Pyrofiber® products, among others, have a unique, online emissivity calculator that enables one to calculate the temperature measurement effect of: wavelength, emissivity setting and temperature for Infrared measurement wavelength bands ranging from 0.655 micrometer to 10.6 micrometers.
You can access the calculator by CLICKING HERE
(Pyrometer Instrument Company, [...]

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EMISSIVITY EVALUATION OF FIXED POINT BLACKBODIES

December 12, 2008

A paper by Sergey Mekhontsev, Vladimir Khromchenko, Alexander Prokhorov, Leonard Hanssen
National Institute for Standards and Technology, Gaithersburg, MD, USA
Presented at the 9th International Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2004), June 22-25, 2004, Dubrovnik, Croatia, Proceedings, Vol. 1, ed. by D. Zvizdic (2004), pp. 581-586.
ABSTRACT
A new facility for [...]

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IR spectral characterization of customer blackbody sources:

December 5, 2008

“First calibration results”
A paper by S. Mekhontsev, M. Noorma, A. Prokhorov, and L. Hanssen from NIST in the USA, Presented at Thermosense XXVIII, ed. by Jonathan J. Miles, G. Raymond Peacock, and Kathryn M. Knettel, Proc. of SPIE 6205, 620503 (2006).
ABSTRACT:
We summarize recent progress in our infrared (IR) spectral radiance metrology effort. In support of [...]

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Prediction of the thermal radiative properties of an X-Ray µ-tomographied porous silica glass

November 4, 2008

Prediction of the thermal radiative properties of an X-Ray µ-tomographied porous silica glass
B.Rousseau, D.De Sousa Meneses, P.Echegut, M.Di Michiel, J.-F.Thovert
Prediction of the thermal radiative properties of an X-Ray µ-tomographied porous silica glass
Applied Optics 46 4266-4276, (2007)
ABSTRACT
“A Monte Carlo ray tracing procedure is proposed to simulate thermal optical processes in heterogeneous materials. It operates within a [...]

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