Wyniki wyszukiwania - BazTech

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Non-Uniformity of Water Demands in a Rural Water Supply System

Gwoździej-Mazur Joanna, Świętochowski Kamil

Journal of Ecological Engineering

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2019

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Vol. 20, nr 8

245--251

EN

The increasingly frequent use of computer simulations for the calculations concerning the water supply systems requires accounting for the demand patterns. Determining the coefficients of daily and hourly non-uniformity is indispensable for the correct designing or modernization of pipes in the water supply network. The first goal of article was to obtain the non-uniformity index for the preparation of hydraulic models in rural water systems called "N" system and "CWK" system. In this article, the authors present the results of the water consumption analysis in two rural water supply systems. The article presents the water consumption non-uniformity factors calculated over the course of a year, a month and a day. The article also included the calculated water demand curves over the course of a day, showing the variability of water demand with characteristic morning and evening water consumption peaks and changes of the consumption curve in the prospective development of the water supply network, where industrial consumers would become the main water consumers. The research material consisted of the water consumption measurements in two rural water supply networks situated in northeastern Poland, taken over the years 2010-2017. The article also shows the water demand curves in the studied rural water supply networks for every day of the week. The values of minimum and maximum hourly non-uniformity coefficients were compared to the mean value of these coefficients. The changes in the values of minimum and maximum hourly coefficients with respect to the mean value for the given hour may differ from -89% to +85% for hours of minimum demand. The changes in the values of minimum and maximum hourly coefficients with respect to the mean value for the given hour may differ from -16% to +30% for hours of maximum demand.

2

Analiza zmienności godzinowego i dobowego zapotrzebowania na wodę w wybranym wodociągu wiejskim - studium przypadku

Bergel T., Woyciechowska O., Szeląg B.

Gaz, Woda i Technika Sanitarna

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2017

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Nr 4

171--174

PL

W artykule przedstawiono analizę wyników badań godzinowego i dobowego zapotrzebowania na wodę w małym wodociągu wiejskim funkcjonującym we wsi Wola Zachariaszowska (woj. małopolskie, gm. Zielonki). Badania przeprowadzone w latach 2014-2015 wykazały, że średnie dobowe zapotrzebowanie na wodę odniesione do przeliczeniowego mieszkańca oraz przyłącza wodociągowego wyniosło odpowiednio 130,2 dm3 ∙PM-1 ∙d-1 oraz 0,32 m3∙ przył-1 ∙d-1 . Obliczona wartość współczynnika nierównomierności dobowej wyniosła 2,77 dla roku 2014 oraz 2,35 dla 2015 r., a współczynnik nierównomierności godzinowej osiągnął wartość 1,97 dla 2014 r. oraz 1,67 dla 2015 r. Dodatkowo, analizy statystyczne wykonane za pomocą metody analizy skupień wykazały istotne zróżnicowanie zmienności zapotrzebowania na wodę w przeciągu doby w dni powszednie oraz soboty, niedziele i święta. Przeprowadzone analizy wykazały również, że metodę k - średnich można wykorzystać do obliczenia wartości średnich zbiorów w poszczególnych godzinach doby dla dni powszednich oraz wolnych od pracy.

EN

The paper presents an analysis of hourly and daily water consumption in small, rural water supply located in the village of Wola Zachariaszowska (Malopolska voivodeship, Zielonki district). The study, undertaken in the period of 2014-2015, showed that the average water consumption per conversion inhabitant and per farm was 130,2 dm3 ∙PM-1 ∙d-1 oraz 0,32 m3∙ przył-1 ∙d-1 . The calculated value of 2,77 for 2014 and 2,35 for 2015, and the coefficient of hourly inequality reached the value of 1,97 for 2014 and 1,67 for 2015. Furthermore, the statistical analysis, by the cluster analysis method, showed significant differences in variation of water consumption between weekdays and Saturdays, Sundays and holidays. The analysis also presented that the k-means clustering method could be used for the calculation of average data, set in particular hours of the day for weekdays and non-working days.

3

Water supply network expansion in the commune of Mściwojów as relates to the pilot project vital landscapes

Bergel T., Bugajski P., Pawełek J.

Geomatics, Landmanagement and Landscape

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2013

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no. 2

15--24

EN

This article presents the analysis of the water supply system expandability in the commune of Mściwojów. Such necessity of the expansion resulted from the locations of the new investments covered by the pilot program VITAL LANDSCAPES. Hydraulic calculations, covering two possible solutions, have proven that the existing water supply network is sufficient now and will be sufficient in the near future (after expansion), in supplying all the consumers with water.