Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density

Andrey Titunin

doi:10.52957/2782-1919-2024-5-1-8-18

UDC 691.11 UDC 674.028

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THERMAL CONDUCTIVITY COEFFICIENT DETERMINATION OF WOODEN GLUED STRUCTURES TAKING INTO ACCOUNT MACROSTRUCTURE AND WOOD DENSITY Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density

АА Аа

Published in Smart composite in construction · Volume 5, Issue 1 · Pages 8–18 · Rubric: Buildings, Facilities and Structures

DOI: https://doi.org/10.52957/2782-1919-2024-5-1-8-18

Received: 11.12.2023 Accepted: 06.03.2024 Published: 23.03.2024

Authors

Andrey Titunin

ORCID

Andrey Titunin

Science rang: docent

Kostroma State Agricultural Academy Karavaevo

Kostroma state University department chair · Department of logging and wood processing industries · Russian Federation · Kostroma

ORCID

ABSTRACT

The paper considers calculated and experimental methods of determining the thermal conductivity coefficient of wooden glued structures. The author shows that when designing the thermal protection of building enclosure structures in the form of CLT-panels or wooden glued laminated timber, one uses reference data on the thermal conductivity coefficient for pine or spruce. In practice, the value of the thermal conductivity coefficient may be less than the reference value; as a consequence, the thickness of the building enclosing structures is overestimated. This is not reasonable in terms of material intensity of construction. When considering wood as an anisotropic material, the peculiarities of the macrostructure and differences in the density of individual layers, as well as the wood species, should be taken into account when determining the parameters of structures. Based on the physical description of the thermal conductivity process and the fundamental laws of heat and mass transfer, the author proposes that it is necessary to adjust the results of calculations to the actual values of the thermal conductivity coefficient of multilayer wooden glued structures. The paper presents the results of experimental determination of the thermal conductivity coefficient of pine and aspen wood using steady-state and unsteady heat flow methods. It is shown that, depending on the density and wood species, experimental values of the thermal conductivity coefficient from 0.102 to 0.115 W·m-1∙K-1 can be obtained.

KEYWORDS

wooden glued structures, wooden house building, thermal conductivity, methods of thermal conductivity determination

Funding

The study was financially supported by the Russian Science Foundation and the administration of the Kostroma region within the framework of scientific project No. 22-29-20267.

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GOST

Titunin A. A. Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density // Smart composite in construction. 2024. no. 1. pp. 8-18. DOI: https://doi.org/10.52957/2782-1919-2024-5-1-8-18. (Date of access 08.10.2026).

MLA

Andrey Titunin. "Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density." Smart composite in construction 5.1 (2024): 8-18. DOI: https://doi.org/10.52957/2782-1919-2024-5-1-8-18.

APA

Titunin A. A. (2024). Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density. Smart composite in construction, 5(1), 8-18. https://doi.org/10.52957/2782-1919-2024-5-1-8-18

Chicago

Andrey Titunin. "Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density." Smart composite in construction 5, no. 1 (2024): 8-18. https://doi.org/10.52957/2782-1919-2024-5-1-8-18.

WIKI

{{cite journal | author = Titunin A. A. | title = Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density | journal = Smart composite in construction | year = 2024 | volume = 5 | issue = 1 | pages = 8-18 | doi = 10.52957/2782-1919-2024-5-1-8-18 }}

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THERMAL CONDUCTIVITY COEFFICIENT DETERMINATION OF WOODEN GLUED STRUCTURES TAKING INTO ACCOUNT MACROSTRUCTURE AND WOOD DENSITY Thermal conductivity coefficient determination of wooden glued structures taking into account macrostructure and wood density

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