REVEALING PATTERNS OF THERMOPHYSICAL PARAMETERS IN THE DESIGNED ENERGY-SAVING STRUCTURES FOR EXTERNAL FENCING WITH AIR CHANNELS

Tagybayev A. Zhangabay N. Suleimenov U. Avramov K. Uspenskyi B. Umbitaliyev A.
2023 Technology Center

Eastern-European Journal of Enterprise Technologies
2023 #4 Issue 8(124)32 - 43 pp.

This study reports the design of new models of energy-saving enclosing structures with air channels. To calculate the thermophysical parameters of external fences, the Maple computer algebra system was used; the value of thermal resistance of structures was determined on the basis of a finite-element method in ANSYS. The result of the structure analysis showed that the value of thermal inertia of the traditional design and the average value of the thermal inertia of the developed structures were equal. However, the vibration amplitude of the designed enclosing structures was up to 20.72 % more efficient than the traditional one. At the same time, it was revealed that the air gaps did not affect the thermal inertia of the strucure, and its parameters depended only on the total thickness of the material. The analysis showed that the vapor permeability of the inner wall of the designed structures was equal to the traditional one. However, the value of resistance to vapor permeation of the fence of the developed structures was 3.21 % more effective. At the same time, the use of a closed air layer with a heat-reflecting screen makes it possible to shift the possible condensation zone towards the outer surface of the fence. An analysis of the check for the non-condensation of condensate in the ventilated air gap showed that condensate did not fall out in the ventilated air gap in all the considered schemes, and the results of the analysis by the air permeability value showed that all fencing schemes met the requirements for air permeability. Solving the problems of energy saving in construction through the development of new energy-efficient designs of enclosing structures help reduce the cost of thermal energy of buildings, which is an urgent task all over the world today.

air regime of an external fence , closed air channels , heat resistance of an external fence , heat-reflecting screen , humidity regime of an external fence

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Department of Construction and Construction Materials, Mukhtar Auezov South Kazakhstan University, 5, Tauke-Khan str., Shymkent, 160012, Kazakhstan
Department of Construction and Construction Materials, Mukhtar Auezov South Kazakhstan University, 5, Tauke-Khan str., Shymkent, 160012, Kazakhstan
Technical Sciences, Department of Construction, Shymkent University, 150, Silk Road str., Karatausky dist., Shymkent, 160031, Kazakhstan
Technical Sciences, Ukraine State price in Science and Engineering Winner, Academician of Ukraine Engineering Academy, Department of Reliability and Dynamic Strength, A. Pidhornyi Institute of Mechanical Engineering Problems of National Academy of Sciences of Ukraine, 2/10, Pozharskoho str., Kharkiv, 61046, Ukraine
Department of Reliability and Dynamic Strength, A. Pidhornyi Institute of Mechanical Engineering Problems of National Academy of Sciences of Ukraine, 2/10, Pozharskoho str., Kharkiv, 61046, Ukraine
Economics, Department of Economics, Shymkent University, 150, Silk Road str., Karatausky dist., Shymkent, 160031, Kazakhstan

Department of Construction and Construction Materials
Department of Construction and Construction Materials
Technical Sciences
Technical Sciences
Department of Reliability and Dynamic Strength
Economics

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