Analysis of the influence of factors on the reliability of energy efficiency of enclosing structures of adjustment units using linguistic variables

Abstract

The use of innovative energy-saving structural units at the construction site will increase the energy efficiency of multi-storey residential buildings and reduce the cost of paying for energy consumed for heating in the cold season. The reliability of any system depends on the design, manufacture and operation. The durability and reliability of structures can be increased at the design stage, that is, during research, design, calculations and design development. A hierarchy of factors of influence on the reliability of ensuring energy efficiency of enclosing structures in the junction nodes has been developed. A tree of logical inference of hierarchical links has been built. The root of the tree of logical conclusions, as an integral indicator, allows, at the expert level, to provide intellectual support for the decisions made to choose a heat-insulating material and the design of the junction nodes. The analysis of the influence of factors on the reliability of ensuring the energy efficiency of the enclosing structures at thee junctions points using linguistic variables. In order to assess the reliability of thermal insulation material, expert knowledge bases were formed and fuzzy logical equations were written, as well as the response surface was constructed. Matrices of paired comparisons of scientific and technical design solutions for the terms “low”,”medium”, “high” have been created. Based on the solution of matrices of pairwise comparisons, accessory functions were obtained for all terms. The obtained results of membership functions are normalized by one by dividing by the highest degree of membership. The mathematical assessment of the process was carried out using out the Matlab software. The surfaces of the expert system for decision-making based on fuzzy inference are built.