PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Powiadomienia systemowe
  • Sesja wygasła!
  • Sesja wygasła!
  • Sesja wygasła!
Tytuł artykułu

Effect of thermal conductivity reduction in determination of thermal conductivity of semitransparent media in the aspect of analytical analysis and radiation heat transfer equation

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The present paper is devoted to an analytical and numerical analysis of the problem of thickness effect curve in semitransparent media, where the simultaneous radiation and conduction heat transfer takes place [1-5]. To do this a method of the thermal conductivity thickness dependence k(z) division (for a sample thickness l) into three parts of different width (two external parts of them are of the same width) has been proposed. To validate the proposed method the results of analytical solution have been compared with the exact solution of the 1-D coupled radiation and conduction heat transfer model in an emitting and absorbing medium.
Rocznik
Strony
35--46
Opis fizyczny
Bibliogr. 15 poz.,Rys., tab.,
Twórcy
  • Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland
autor
  • Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland
Bibliografia
  • [1] PÖLTZ H.: The thermal conductivity of liquids II, Int. J. Heat Mass Transfer, 8, Pergamon Press, 1965, (in German).
  • [2] PÖLTZ H.: The thermal conductivity of liquids III, Int. J. Heat Mass Transfer, 8, Pergamon Press, 1965, (in German).
  • [3] PÖLTZ H. AND JUGEL R.: The thermal conductivity of liquids - IV, Int. J. Heat Mass Transfer, 10, Pergamon Press, 1967.
  • [4] ANDRE S. AND DEGIOVANNI A.: A theoretical study of the transient coupled conduction and radiation heat transfer in glass: phonic diffusivity measurements by the flash technique, Int. J. Heat Mass Transfer, 38, Pergamon Press, 1995.
  • [5] BOOTH J. R. AND GRIMES J. T.: The determination of radiation k-factor for foam structures using HFM apparatus, Proc. of "Thermal Conductivity 22' Conference, Technomic Publishing Company, Inc, USA, 1994.
  • [6] KONIORCZYK P.: Experimental research and analysis of coupled conduction- radiation heat transfer in block polymerized polyamide 6, J. of Tech. Phys., 36, 3, 1995.
  • [7] KONIORCZYK P.: Reduction of thermal conductivity in small thickness samples of some selected synthetic materials. The influence of a temperature difference on the thermal conductivity of those materials, J. of Tech. Physics, 36, 4, 1997.
  • [8] KONIORCZYK P.: Modelling and numerical analysis of the phenomenon of reduction in the thermal conductivity in small thickness samples of some selected synthetic materials, J. of Tech. Physics, 39, 1, 1998.
  • [9] KONIORCZYK P.: The Rosseland theory of diffusion radiation as applied to the study of the phenomenon of reduction in thermal conductivity, J. of Tech. Physics, 40, 2, 1999.
  • [10] WIŚNIEWSKI S.: Technical Termodynamics, WNT, Warsaw 1980, Poland, 265-273, (in Polish)
  • [11] VISKANTA R., GROSH R. J.: Heat transfer by simultaneous conduction and radiation in an absorbing medium, J. of Heat Transfer, Trans. of the ASME, February 1962, 63-72.
  • [12] VISKANTA R., GROSH R. J.: Effect of surface emissivity on heat transfer by si- multaneous conduction and radiation, Int. J. of Heat Mass Transfer, vol. 5, 1962, 729-734.
  • [13] KONIORCZYK P., ZMYWACZYK J.: Reduction of a measured effective thermal con- ductivity in aspect of the radiative transfer equation for a chosen absorbing and emitting media, Arch. of Thermodynamics, 23(2002), No. 1-2.
  • [14] ÖZISIK N. M.: Radiative Transfer and Interactions with Conduction and Convec- tion, John Wiley & Sons, New York 1973.
  • [15] KONIORCZYK P.: Some problems of thickness effect curve' measurements in the determination of heat conductivity of semitransparent media using thin plate samples, (Brief Comm., accepted for publ. in Archives of Thermodynamics).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BGPK-0638-2825
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.