Open AccessOPTIMIZATION OF THE HEAT AND HUMIDITY MODE OF MULTI-LAYER BUILDING ENCLOSING STRUCTURES
Author(s) -
Yuri S. Vytchikov,
Mikhail E. Saparev,
Dar’ya D. KONYaKINA
Publication year - 2021
Publication title -
gradostroitelʹstvo i arhitektura
Language(s) - English
Resource type - Journals
eISSN - 2782-2109
pISSN - 2542-0151
DOI - 10.17673/vestnik.2020.04.5
Subject(s) - facade , water vapor , materials science , humidity , building envelope , thermal resistance , thermal insulation , condensation , composite material , masonry , polystyrene , layer (electronics) , envelope (radar) , thermal , permeation , polymer , structural engineering , thermodynamics , engineering , meteorology , chemistry , aerospace engineering , radar , biochemistry , physics , membrane
The article presents a methodology for determining the required resistance to vapor permeation of the outer layer of a multilayer building envelope, based on the condition that there is no condensation of water vapor in it. When deriving the formula, an analytical dependence was used to determine the elasticity of saturated water vapor, obtained by the authors of this article. With the help of the proposed technique, the assessment of the thermal and humidity regime of the outer wall, insulated facade system using thin-walled plaster, as well as layered masonry using expanded polystyrene and basalt plates as insulation was made. The results of the calculation of the indicated external walls are presented, which show that condensation of water vapor is possible in layered masonry. The proposed analytical dependence for determining the maximum allowable resistance to vapor permeation of the outer layer of a multilayer enclosing structure is recommended to be used in engineering calculations of the humidity mode of external enclosures of buildings and structures.