About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Dmitry E. Polivanov, post-graduate student, St. Petersburg State University of Architecture and Civil Engineering, St. Petersburg, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Alexey A. Semenov, candidate of technical sciences, head of the department of Information technologies, St. Petersburg State University of Architecture and Civil Engineering, St. Petersburg, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it |
| Title of the article | Investigation of the mode of water extraction by a mixer from a water supply system |
| Abstract. | Problem statement. Currently used deterministic models and methods for calculating water consumption in water supply systems and forecasting their distribution through the pipeline network do not accurately reflect the stochastic nature of water consumption, which actually determines the mode of operation of a real water supply system. One of the main factors determining the formation and change in time of water consumption supplied for household and drinking needs and transported through pipelines of water supply systems is the mode of operation of water sampling valves and/or equipment. The purpose of the work is to study the operating mode of the mixer installed at a specific point of the water supply system. The objectives of the study are obtaining statistical data on the operation of the water intake valve (mixer) for a certain period of time; processing the data obtained and comparing empirical results with calculated (theoretical); plotting a time series graph, a distribution density graph and a graph of the distribution function of the second water flow by the mixer; selection of the theoretical law of the distribution of the value of the second water flow by the mixer based on the available data. Results. The paper presents the results of a study of the mode of water extraction by a mixer from the water supply system. In the form of graphs, it is clearly shown that the operating mode of the mixer cannot be characterized by a specific value and is subject to a certain distribution, which in the first approximation (in form and basic numerical characteristics) can be defined as a Weibull distribution. The comparison of the empirical values of the second water flow by the mixer with their calculated (theoretical) analogues is given and it is shown that the difference ranges from 44,4% to 95,6%. Conclusions. The significance of the results obtained during the implementation of this study consists in a visual demonstration of the imperfection of the available calculation methods, justification of the need for research in this area, as well as the development and improvement of mathematical models of water supply systems. |
| Keywords. | water-collecting valves, water supply system, operating mode, calculated flow rate, second flow rate, hourly flow rate, water flow sensor |
| For citations: | Polivanov D.E., Semenov A.A. Investigation of the mode of water extraction by a mixer from a water supply system // News KSUAE 2023 No. 2 (64), p. 60-69, DOI: 10.52409/20731523_2023_2_60, EDN: ZAEWGC |
