National Repository of Grey Literature 35 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Technical autid of water supply infrastructure
Straková, Eliška ; Ručka, Jan (referee) ; Tuhovčák, Ladislav (advisor)
This bachelor thesis deals with the topic of evaluating the technical condition of selected elements of water supply infrastructure. In the theoretical part of the thesis are listed the legislative requirements for evaluating the technical condition of water infrastructure, factors affecting the technical condition and methods used for evaluation in the Czech Republic and in the other countries. The methodology of technical audit and software application TEA Water were used for the elaboration of the practical part of thesis. Specific modules are described in thesis in more details and then applied to a selected drinking water supply system.
Analysis of Water Consumption in Brno
Růžička, Jaroslav ; Kučera, Tomáš (referee) ; Tuhovčák, Ladislav (advisor)
Water consumption is the amount of water removed by the consumer from water disstribution network. During the transportation inside water disstribution network occur losses. Assesing these losses is one of the main responsibillities of the water supplier. We can show the amount of water lost by using several different methods. Values used to describe the amount of water lost can be often replaced by percentual ratio of water produced to water lossed.
Optimisation of pressure condition in water supply systems
Sucháček, Tomáš ; Svoboda,, Miroslav (referee) ; Pollert, Jaroslav (referee) ; Tuhovčák, Ladislav (advisor)
This thesis is focused on the optimization of pressure conditions in the water supply network. There is a deep theoretical and critical search of the state of the art and there are fields where there is an insufficient field of knowledge, the so-called "knowledge gap". Experiments are proposed here to determine the dependence of water consumption on pressure conditions. There is a description of experiments and way how it was carried out, which were carried out on the water connection, in the pressure zone and in the laboratory on the hydraulic loop. There is proposed a methodology of experimental determination of the mathematical dependence of water consumption on pressure so that it can be used for optimization problems, where consumption is considered as an optimization criterion. The results of individual experiments are evaluated and a critical discussion of the achieved results is carried out. Finally, the achieved results are compared with the values found in a deep literature search.
Technical Audit and Risk Assessment of Water Tanks
Tanistrová, Lucie ; Komínek, Jiří (referee) ; Tuhovčák, Ladislav (advisor)
The diploma thesis is primarily focused on risk analysis and risk assessment of drinking water supply systems. In the research, the issues of risk analysis and risk assessment considering world and Czech Republic, were summarized. Software WaterRisk, which was developed by BUT Brno, was used for risk assessment of a particular water supply system in Třebom. Next, the thesis is aimed on technical audit of water tanks. There was a research of technical audit in the world and in the Czech Republic. Also assessment of technical audit of a particular water tank, which had to be anonymized, using software TEAwater is described in detail. Two conditions were considered: before and after reconstruction.
Risk Assessment of Public Water Supply System as Part of Operation Plan
Hájek, Břetislav ; Viščor,, Pavel (referee) ; Tuhovčák, Ladislav (advisor)
The thesis is focused on the assessment of public water supply risks using the WaterRisk application created at the Institute of Municipal Water management, Brno University of Technology, Faculty of Civil Engineering. The thesis deals with the basic principles and methods of risk assessment. The thesis also focuses on testing the application WaterRisk and revising its manual. In the last part I deal with risk analysis of specific water supply system.
Using Artificial Neural Network Models to Assess Water Quality in Water Distribution Networks
Cuesta Cordoba, Gustavo Andres ; Tuhovčák, Ladislav (advisor)
A water distribution system (WDS) is based in a network of interconnected hydraulic components to transport the water directly to the customers. Water must be treated in a Water Treatment Plant (WTP) to provide safe drinking water to consumers, free from pathogenic and other undesirable organisms. The disinfection is an important aspect in achieving safe drinking water and preventing the spread of waterborne diseases. Chlorine is the most commonly used disinfectant in conventional water treatment processes because of its low cost, its capacity to deactivate bacteria, and because it ensures residual concentrations in WDS to prevent microbiological contamination. Chlorine residual concentration is affected by a phenomenon known as chlorine decay, which means that chlorine reacts with other components along the system and its concentration decrease. Chlorine is measured at the output of the WTP and also in several considered points within the WDS to control the water quality in the system. Simulation and modeling methods help to predict in an effective way the chlorine concentration in the WDS. The purpose of the thesis is to assess chlorine concentration in some strategic points within the WDS by using the historical measured data of some water quality parameters that influence chlorine decay. Recent investigations of the water quality have shown the need of the use of non-linear modeling for chlorine decay prediction. Chlorine decay in a pipeline is a complex phenomenon so it requires techniques that can provide reliable and efficient representation of the complexity of this behavior. Statistical models based on Artificial Neural Networks (ANN) have been found appropriated for the investigation and solution of problems related with non-linearity in the chlorine decay prediction offering advantages over more conventional modeling techniques. In this sense, this thesis uses a specific neural network application to solve the problem of forecasting the residual chlorine
Long term planning of water distribution network rehabilitation
Hos, Lukáš ; Kučera, Tomáš (referee) ; Tuhovčák, Ladislav (advisor)
This diploma thesis is about long-term rehabilitation planning of water distribution system. First part is about legislative demands on rehabilitation planning in Czech Republic and about methods used abroad to do long-term reahabilitation planning. Second part of thesis is about own created method based on TEA Water (application about condtition assessment of water supply infrastructure). This method is tested on fictional water network and on real water network of Babice nad Svitavou.
Impact of pressure condition on water consuption in water distribution network
Straňák, Petr ; Sucháček, Tomáš (referee) ; Tuhovčák, Ladislav (advisor)
The diploma thesis deals with effect of pressure conditions in the water supply network on consumption of drinking water. The introductory part describes how pressures affect water consumption and six studies from different countries carried out on real network are presented. Further, the work is devoted to other factors influencing water consumption and distribution of domestic water consumption. The practical part deals with the laboratory measurement of the influence of pressure change on tested discharge fittings for flowing and dripping water. The results are also expressed in annual costs and a method is presented how the effect of pressure change can be quantified if we know the average daily consumption and its distribution.
Multi-objective condition assessment of selected parts of water distribution systems
Tauš, Miloslav ; Svoboda,, Miroslav (referee) ; Kriš,, Jozef (referee) ; Tuhovčák, Ladislav (advisor)
The topic of the thesis is multi objective condition assessment of water supply systems. The state of the art of condition assessment of water supply systems and the state of the art of multi objective optimization methods are presented within the thesis. Based on these recherches, the uniform methodology of condition assessment of water supply systems and its 7 modules was designed. The thesis deals with the selected modules to condition assessment of water pumping stations, water networks and pipe sections. The output of the methodology is the assignment of a category of the technical condition to the rated object. The proposed methodology was tested on real water facilities and proves the ability of a fair presentation of the technical condition of the object.
Benchmarking of Water Utilities in Czech Republic
Hájek, Břetislav ; Sucháček, Tomáš (referee) ; Tuhovčák, Ladislav (advisor)
This Bachelor thesis is focused on knowledge of benchmarking of water companies with performance indicators. The main task is to to gather basic and complementrary indicators into the Excel table, which calculates performance indicators. All indicators are then rewritten into the WaBe web application. Data are collected from the company’s annual reports, which are downloadable on the website of the Ministry of Justice www.justice.org, where companies are required to submit their annual reports. The first part of the bachelor thesis is a description of benchmarking and the companies that do it in water industry as foreign companies (IWA, EBC, IBNET, EurEau, AWWA, WRF) as well as the czech organizations (SOVAK, Ministry of Agriculture, WaBe). In the second part is the presentation and analysis of selected water companies. For the selected indicatorsis made comparsion with graphs created in Excel.

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