Kyiv National University of Construction and Architecture (KNUCA)
VENTYLIATSIIA, OSVITLENNIA TA TEPLOHAZOPOSTACHANNIA
scientific and technical collection
This work is licensed under a Creative Commons Attribution 4.0 International License.
E.Dmitrochenkova, PhD, Associate Professor. Kiev National University of Construction and Architecture, Kyiv, Ukraine, email@example.com
Algorithm for Determining the Weight Coefficients of Local Criteria for Comparative Analysis of Several Options of Cogeneration Plants
Abstract. Wear of the basic facilities of Ukrainian thermal energy reached 85...90 %, which leads to a deterioration of electricity supply. Distant areas receive electricity on schedule; harp switching off consumers is performed. Therefore, more attention is paid to small power generation with simultaneous generation of thermal and electric energy (cogeneration).When designing and implementing cogeneration projects, it is important to choose the right technology system, primary motors, and other technical solutions. For this purpose, a certain set of performance indicators of cogeneration plants is used. Selection of options of schematic solutions is carried out based on the results of a comparative analysis of these indicators. One of the possibilities for comparative analysis between several options of cogeneration systems is a criterial-parametric approach taking into account the customer's priorities in technical, economic, operational and environmental efficiency. For carrying out the selection, it is proposed to use weight coefficients, which determine the influence of each separate criterion on the total. The technique for calculating the numerical values of the weight coefficients of local criteria in full and partially ranked series is presented using the method of decreasing arithmetric progression. Comparison of the results is performed using the full and partially ranked series. The use of criterias with the same importance gives more options for analysis, so, provides greater flexibility of the method.
Key words: cogeneration unit, local criterion, weighting coefficient, arithmetic progression, ranking