Abstract
The main prerequisites for the development of wooden housing construction in Russia are given, which determined the goal of this study - to develop a mathematical model of heat and mass transfer (moisture transfer) in glued timber for rational design of enclosing structures. Lamellas can be classified as a capillary ‒ porous body. leaning on theory of academician A.V. Lykov, the formulation of the problem of heat and mass transfer in a multilayer glued laminated timber is presented a system of equations describing non-stationary heat, mass and pressure transfer under real possible operating conditions of enclosing structures is considered. An analytical method is proposed for calculating both individual lamellas and the entire multilayer glued beam. The proposed technique allows the method of solving the inverse problem to directly calculate the resistance value of the entire bar from the unsteady temperature field. The system of equations describing the process is nonlinear and analytically insoluble. To solve the problem, a combined method for solving boundary value problems of heat transfer was used, which is based on a combination of elements of analytical and numerical solutions. A feature of the problem under consideration is that the middle lamella has heat-conducting inclusions in the form of a bough. Method is that the entire heat transfer process is divided into a number of small time intervals. Within each interval, we assume that the temperature is constant at the interface between layers and a constant heat flux through the contacting surfaces, i.e. perfect thermal contact.
Highlights
Target reference point of the national project «Housing and urban environment» in terms of housing commissioning in 2024 is 120.0 million m2 per year [1]
The share of the timber industry complex, the main supplier of materials for wooden housing construction, in the total volume of industrial production in Russia has been steadily decreasing in recent years
The technical and economic feasibility of wooden housing construction is obvious, at present in Russia wooden houses account for about 10-15% of the total volume of housing produced in the country, i.e., about 6.0 million m2 [2]
Summary
Target reference point of the national project «Housing and urban environment» in terms of housing commissioning in 2024 is 120.0 million m2 per year [1]. According to many researchers, including the authors of this article, one of the main sources of growth in the volume of housing construction in Russia should be low-rise wooden housing construction. The share of the timber industry complex, the main supplier of materials for wooden housing construction, in the total volume of industrial production in Russia has been steadily decreasing in recent years. The technical and economic feasibility of wooden housing construction is obvious, at present in Russia wooden houses account for about 10-15% of the total volume of housing produced in the country, i.e., about 6.0 million m2 [2]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
