Estimation of the operability of technological systems for the production of biogas by comprehensives indicators
A promising alternative energy source is biogas, which is obtained by bacteria processing an organic substrate without access to oxygen. The efficiency of the use and functioning of technological systems is determined by the indicators of their operability and reliability. The aim of the study is to develop a methodology for assessing the performance of technological systems for biogas production by complex indicators. The article analyzes the methods of complex assessment of the state of technological systems. The considered methods have the following disadvantages: most of them can be used only after a certain operating time of the system; expert assessments are based on intuition and, as a result, are not always objective; the functional-parametric approach is methodological rather than practical; determination of the efficiency retention coefficient with an increase in the number of elements and the complication of the structure of the technological system becomes rather difficult. The operability of technological systems for biogas production with an increase in their service life is expressed through a change in technical condition indicators, a decrease in productivity and a change in economic indicators: an increase in costs per unit of work performed and additional costs for maintaining a repair and maintenance base. To analyze the technical state of technological systems for biogas production, it is advisable to use a complex operational indicator , which simultaneously takes into account its technical and economic characteristics during the period of operation, that is, the unit costs of ensuring operability through the cost of a unit of production during the service life up to the limiting state. Key words: technological system, biogas, reliability, operability, efficiency preservation ratio, comprehensive performance indicator