Determination of efficiency in the design phase of the enterprise by the method of finite relations
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The algorithm for estimating engineering solutions at the design stage in terms of the relative energy intensity by the method of finite relations (MFR) has been considered. The description and diagram of an energy consumption system serving as the base object in the analysis of energy efficiency for the manufacturing of products have been given. The basic features of using the method of finite relations at the design stage have been investigated. Based on energy estimation, the usefulness of the integrated approach to design for improving the energy efficiency of industrial enterprises has been proved. The aim of this paper is to describe the current approaches to solving energy-saving issues arising at the enterprise design stage to substantiate the possibility of using MFR to optimize design solutions in terms of energy efficiency. To achieve the aim set at the beginning of the paper, we consider an example from the book 'Industrial pumping systems' (Stasinopoulos et al., 2012, p. 165) with the basic formulas and design values preserved. The main design tasks are to select the pump power P and determine the diameter of the pipeline D. The analysis of the given design solutions with the help of the MFR has clearly demonstrated the significant advantages of the integrated design approach over the traditional one. As a result, the use of the integrated approach to design made it possible to reduce the consumed design energy by 88% and the relative energy intensity QPe(project) from 10.468 to 1.215.