Development of technical and economic analysis algorithms for calculators of engineering systems

Introduction. The problem relevance is explained by the advancement of digital technologies in science and engineering, including the design and reconstruction of engineering systems of buildings and structures. Numerous regulatory documents have been developed so far, including codes of rules, All-Russian State Standards (GOSTs) and other regulatory instruments. This scope of documents is regularly updated. The problem is the insufficient adaptation of this regulatory documentation in software packages. Materials and methods. To solve this problem and to complete a feasibility study backing the choice of envelopes and the analysis of thermal loads on buildings, an engineering calculator has been developed. The author has designed calculation algorithms for an engineering calculator based on (1) the regulatory documentation, applicable to the thermal protection of buildings, and (2) the heat flow analysis methodology based on the aggregate parameters of a construction facility, and (3) the economic justification of the methodology application. Results. The results obtained using the engineering calculator and based on the heat flow analysis algorithm that employs aggregate parameters are compared with the results extracted from the building designs. To solve the applied problem, the engineering calculator uses one sample building to analyze the feasibility of application of various types of envelopes. Conclusions. In the course of research, the author set and solved the following tasks: the method of specific heat flow analysis, based on the aggregate parameters of a construction facility, was applied to calculate new a, n coefficients; DHTML software was applied to develop algorithms for engineering calculators, including the heat flow analysis algorithm based on the aggregate parameters and the feasibility study algorithm applied to justify the use of particular types of building envelopes; a web application was developed to analyze the heat flow on the basis of the aggregate parameters and the feasibility of application of certain types of building envelopes.