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2 2021

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Kohonen Artificial Networks for the Verification of the Diameters of Water-pipes

Dawidowicz Jacek, Czapczuk Andrzej, Kruszyński Wojciech

Rocznik Ochrona Środowiska

2021

Tom 23

835--844

The design of the water distribution system is inherently linked to the execution of calculations, which aim, among other things, to determine the flow rate through individual pipes and the selection of diameters at the appropriate speed. Each step in the calculations is followed by an evaluation of the results and, if necessary, a correction of the data and further calculations. It is up to the designer to analyse the accuracy of the calculation results and is time-consuming for large systems. In this article, a diagnostic method for the results of hydraulic calculations, based on Kohonen Network, which classifies nominal diameters [DN] on the basis of data, in the form of flows, has been proposed. After calculating the new variant of the water distribution system, the individual calculation sections are assigned to the neurons of the topological map of Kohonen Network drawn up for nominal diameters. By comparing the diameter used for the calculation, with the diameter obtained on the topological map, the accuracy of the chosen diameter can be assessed. The topological map, created as a result of labelling the neurons of the output layer of the Kohonen Network, graphically shows the position of the classified diameter, relative to those diameters with similar input values. The position of a given diameter, relative to other diameters, may suggest the need to change the diameter of the pipe.

Beton fotokatalityczny nowej generacji – wyzwania naukowe i koncepcje wdrożeniowe

Jackiewicz-Rek Wioletta, Chilmon Karol, Garbacz Andrzej, Długołęcki Andrzej, Czapczuk Andrzej, Krakowski Piotr, Jarosławski Janusz

Inżynieria i Budownictwo

2021

R. 77, nr 1-2

55--59

Omówiono dwa projekty o walorach poznawczych i praktycznych, których realizacja umożliwi opracowanie szerokiej gamy elementów z betonów fotokatalitycznych. W jednym będą to prefabrykowane estetyczne, elewacyjne i samoczyszczące się elementy mające zdolność redukcji zanieczyszczeń organicznych i nieorganicznych, a w drugim – elementy nawierzchni z betonu porowatego, które dodatkowo oprócz funkcji zmniejszenia zanieczyszczeń będą miały wpływ na warunki wodne i małej retencji w otoczeniu.

The implementation of two projects with both scientific and practical values has discussed. The projects will enable the development of a wide range of elements made of photocatalytic concrete – in one they will be prefabricated, aesthetic, façade and self-cleaning elements with the ability to reduce organic and inorganic pollutants, and in the second – porous concrete pavement elements, which, in addition to the pollution reduction function, will have an impact on water conditions and small retention in the surroundings.