IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i12p3211-d374255.html
   My bibliography  Save this article

Dependencies for Determining the Thermal Conductivity of Moist Capillary-Porous Materials

Author

Listed:
  • Abdrahman Alsabry

    (Faculty of Civil Engineering, Architecture and Environmental Engineering, Institute of Civil Engineering, University of Zielona Gora, 65-417 Zielona Góra, Poland)

  • Beata Backiel-Brzozowska

    (Faculty of Civil Engineering and Environmental Sciences, Institute of Civil Engineering and Transport, Bialystok University of Technology, 15-351 Bialystok, Poland)

  • Vadzim I. Nikitsin

    (Faculty of Civil Engineering, Brest State Technical University, 224017 Brest, Belarus)

Abstract

A method of determining the effective thermal conductivity of moist capillary-porous materials has been proposed, in which calculations are carried out while taking into account all components of the system (solid, liquid and gas) at once. The method makes it easy to take into account the way water is distributed in the pore space of the material, either as isolated inclusions (drops) or as a continuous component, depending on the moisture content of the material. In the analysis of heat transport in moist capillary-porous materials, the theory of generalized conductivity is used and the structure of moist material is modeled using an ordered geometric structure consisting of identical unit cells in the form of a cube. An equation is obtained for calculating the effective conductivity of capillary-porous materials with isolated and continuous liquid inclusions, with adiabatic and isothermal division of the unit cell. The proposed method is compared to the previously proposed method of determining the effective thermal conductivity of moist materials, in which the three-component system is gradually reduced to a binary system, showing disadvantages of this method compared to the currently proposed. It has been shown that the proposed formulas grant the possibility of a sufficiently accurate prediction of experimental results using the experimental results of the thermal conductivity of moist aerated concrete.

Suggested Citation

  • Abdrahman Alsabry & Beata Backiel-Brzozowska & Vadzim I. Nikitsin, 2020. "Dependencies for Determining the Thermal Conductivity of Moist Capillary-Porous Materials," Energies, MDPI, vol. 13(12), pages 1-14, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:12:p:3211-:d:374255
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/12/3211/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/12/3211/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Vadzim I. Nikitsin & Abdrahman Alsabry & Valery A. Kofanov & Beata Backiel-Brzozowska & Paweł Truszkiewicz, 2020. "A Model of Moist Polymer Foam and a Scheme for the Calculation of Its Thermal Conductivity," Energies, MDPI, vol. 13(3), pages 1-11, January.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Abdrahman Alsabry & Beata Backiel-Brzozowska & Vadzim I. Nikitsin & Serafim K. Nikitsin, 2022. "Equations for Calculating the Thermal Conductivity of Capillary-Porous Materials with over Sorption Moisture Content," Sustainability, MDPI, vol. 14(10), pages 1-14, May.
    2. Beata Backiel-Brzozowska & Vadzim I. Nikitsin & Abdrahman Alsabry & Serafim K. Nikitsin & Wioleta Rutkowska, 2022. "Peculiarities of Calculating the Thermal Conductivity of Moist Autoclaved Aerated Concrete," Energies, MDPI, vol. 15(16), pages 1-11, August.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Abdrahman Alsabry & Beata Backiel-Brzozowska & Vadzim I. Nikitsin & Serafim K. Nikitsin, 2022. "Equations for Calculating the Thermal Conductivity of Capillary-Porous Materials with over Sorption Moisture Content," Sustainability, MDPI, vol. 14(10), pages 1-14, May.
    2. Grzegorz Dombek & Zbigniew Nadolny & Piotr Przybylek & Radoslaw Lopatkiewicz & Agnieszka Marcinkowska & Lukasz Druzynski & Tomasz Boczar & Andrzej Tomczewski, 2020. "Effect of Moisture on the Thermal Conductivity of Cellulose and Aramid Paper Impregnated with Various Dielectric Liquids," Energies, MDPI, vol. 13(17), pages 1-17, August.
    3. Jan Kočí & Robert Černý, 2020. "Special Issue “Recent Developments in Building Physics”," Energies, MDPI, vol. 13(23), pages 1-3, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:12:p:3211-:d:374255. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.