RESEARCH OF BUILDING MATERIALS

A simple method to definethe heat conductivity of a limited plate

Vestnik MGSU 2/2014
  • Evdokimov Andrey Sergeevich - “T-NANO” LLC Chief Executive Officer, “T-NANO” LLC, 9 bld 3 Dolgorukovskaya str., Moscow, 127006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kozintsev Viktor Mikhaylovich - Institute for Problems in Mechanics RAS (IPMekh RAN) Candidate of Physical and Mathematical Sciences, senior research worker, Institute for Problems in Mechanics RAS (IPMekh RAN), 101-1 Prospekt Vernadskogo, Moscow, 119526, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Mel'nik Oleg Eduardovich - Lomonosov Moscow State University (MGU) Doctor of Physical and Mathematical Sciences, Correspondent Member of the RAS, Head of the laboratory, Institute of Mechanics, Lomonosov Moscow State University (MGU), 1 Michurinskiy prospekt, 119192, Moscow, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Popov Aleksandr Leonidovich - Institute for Problems in Mechanics RAS (IPMekh RAN) Doctor of Physical and Mathematical Sciences, Professor, leading research worker, Institute for Problems in Mechanics RAS (IPMekh RAN), 101-1 Prospekt Vernadskogo, Moscow, 119526, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Stoyanov Sergey Viktorovich - “T-Services” CJSC Development director, “T-Services” CJSC, 113/1 Leninskiy Prospekt, Moscow, 117198, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Chelyubeev Dmitriy Anatol'evich - Institute for Problems in Mechanics RAS (IPMekh RAN) junior research worker, Institute for Problems in Mechanics RAS (IPMekh RAN), 101-1 Prospekt Vernadskogo, Moscow, 119526, Russian Federatio; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 114-124

To the present moment there are a lot of ways to define heat conductivity and thermal diffusivity of solid bodies. The schemes of determining heat conductivity, which use transient methods, usually include a heater and a cooler. The sample is placed in between them. The temperature and temperature differential is determined using several thermocouples.The authors present a method of determining the thermal characteristics of a sample in the form of a rectangular plate, allowing to apply only one thermocouple, which leads to a simple analytical expression for thermal diffusivity. The described method provides high-precision determination of thermal diffusivity of the body of small size and with the accuracy sufficient for practice — conductivity coefficient. The method uses a simple mathematical model and minimal hardware resources compared to other methods. The exception is the heat-insulating materials. The determination of their thermal conductivity using this method can lead to poor accuracy.

DOI: 10.22227/1997-0935.2014.2.114-124

References
  1. Tikhonov A.N., Samarskiy A.A. Uravneniya matematicheskoy fiziki [Equations of Mathematical Physics]. Moscow, Nauka Publ., 1972, 735 p.
  2. Lykov A.V., editor. Metody opredeleniya teploprovodnosti i temperaturoprovodnosti [Methods of Determining Thermal Conductivity and Diffusivity]. Moscow, Energiya Publ., 1973, 336 p.
  3. Izmereniya v promyshlennosti: Spravochnik [Measurements in Manufacturing Industry: Reference Book]. Moscow, Metallurgiya Publ., 1990, vol. 2, 384 p.
  4. Vishu Shah. Handbook of Plastics Testing and Failure Analysis. Hoboken, Wiley, 2007, 648 p.
  5. Patent of the Russian Federation RU2075068 C1, SU445892 A1, RU2456582, RU2024013 C1, SU1822958 A1, RU2179718.
  6. Lam T.T., Yeung W.K. Inverse Determination of Thermal Conductivity for One-Dimensional Problems. Journal of Thermophysics and Heat Transfer. 1995, vol. 9, no. 2, pp. 335—344. DOI: 10.2514/3.665.
  7. Lin J.H., Cheng T.F. Numerical Estimation of Thermal Conductivity from Boundary Temperature Measurements. Numer. Heat Transfer Part A.32., 1997, pp. 187—203.
  8. Fizicheskie velichiny. Spravochnik [Physical Quantities. Reference Book]. Moscow, Energoatomizdat Publ., 1991, 1232 p.
  9. Prudnikov A.P., Brychkov Yu.A., Marichev O.I. Integraly i ryady. Elementarnye funktsii [Integrals and Series. Elementary functions]. Moscow, Fizmatlit Publ., 2002, 632 p.
  10. Rivkin S.L., Aleksandrov A.A. Teplofizicheskie svoystva vody i vodyanogo para [Thermal Properties of Water and Water Steam]. Moscow, Energiya Publ., 1980, 424 p.

Download

Results 1 - 1 of 1