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Reduction of the impact of emissivity on high temperature measurements in non-contact thermometric devices

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Treść / Zawartość
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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Non-contact measurements of high temperature, accomplished with the use of infrared cameras and pyrometers, are utilized in many fields of science and industry. However, in order to obtain reliable measurement results from aforementioned devices, one should take account of the emissivity value of a thermal source the temperature of which is being measured. This is due to the necessity of calibration of non-contact thermometric devices in relation to emission characteristics of a blackbody, which is an ideal source with the maximum emissivity value. In order a non-contact temperature measurement was made possible without the necessity of taking into account the emissivity value, an original concept of the measurement method was developed, taking the advantage of thermal radiation laws – Planck’s law and Wien displacement law. The basic idea of the accepted method is the departure from amplitude recording (as in “conventional” pyrometry and thermovision) for linking of temperature recording with a maximum position in Planck’s curve. This article presents a novel approach that was used in the development of an original algorithm of temperature determination for performance of non-contact measurements of high temperature. The algorithm will enable to perform measurements without the necessity of introducing the emissivity value of a radiation source into a measurement instrument and will limit the impact of radiation absorption via the medium in which a measurement is being performed on the results of measurements. The applied methodology will allow conducting non-contact temperature measurements at a distance without the necessity of calibration the measuring device with regard to a blackbody.
Czasopismo
Rocznik
Strony
373--381
Opis fizyczny
Bibliogr. 12 poz., tab., rys.
Twórcy
autor
  • Department of Technical Acoustics and Laser Technique, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland
Bibliografia
  • [1] LISIECKA E., PASSIA H., A concept of the method and device for optical measurement of high temperatures, PAK 60(5), 2014, pp. 272–274.
  • [2] CENGEL Y.A., GHAJAR A.J., Heat and Mass Transfer: Fundamentals and Applications, McGraw-Hill Education, New York, 2011.
  • [3] DERENIAK E.L., BOREMAN G.D., Infrared Detectors and Systems, Wiley, New York, 1996.
  • [4] MICHALSKI L., ECKERSDORF K., KUCHARSKI J., Termometria przyrządy i metody, Wydawnictwo Politechniki Łódzkiej, Łódź, 1998, (in Polish).
  • [5] RZĘSA M.R., KICZMA B., Elektryczne i elektroniczne czujniki temperatury, Wydawnictwo Komunikacji i Łączności, Warszawa, 2005, (in Polish).
  • [6] LIEBMANN F., Emissivity – the crux of accurate radiometric measurement, Fluke Calibration, 2006. [7] HAMRELIUS T., Accurate temperature measurement in thermography, Quantitative Infrared Thermography QIRT, Seminar 27, France, 1992.
  • [8] CHRZANOWSKI K., JANKIEWICZ Z., Accurancy analysis of measuring thermal imaging systems, QUIRT 94 – Eurotherm Series 42 – EETI Ed., Paris, 1995.
  • [9] ROGALSKI A., CHRZANOWSKI K., Infrared devices and techniques, Opto-Electronics Review 10(2), 2002, pp. 111–136.
  • [10] SABEL T., UNTERBERGER S., HEIN K.R.G., Application of quotient pyrometry to industrial pulverised coal combustion, Experimental Thermal and Fluid Science 26(2–4), 2002, pp. 283–289.
  • [11] PANAGIOTOU T., LEVENDIS Y., DELICHATSIOS M., Measurements of particle flame temperatures using three-color optical pyrometry, Combustion and Flame 104(3), 1996, pp. 272–287.
  • [12] CHAR JIR-MING, YEH JUN-HSIEN, The measurement of open propane flame temperature using infrared technique, Journal of Quantitative Spectroscopy and Radiative Transfer 56(1), 1996, pp. 133–144.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-c8ba92ff-4116-470f-869f-a68bac23e76a
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