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The Analysis of Factors Affecting Electricity Consumption
Seiml, Jan ; Mařica, Lukáš (referee) ; Toman, Petr (advisor)
The aim of this thesis is to describe the course of consumption of electricity. One of the feasible ways of description is statistical analysis, which enables to calculate statistically significant factors and their combinations that contributed to the course of consumption of electricity. These factors may be used for modulation of future electricity consumption, and therefore also for long-time prediction. The second chapter discusses the expansion of electricity usage in the Czech Republic from the turn of the 19th century until nowadays. The chapter describes the development of transmission system, development of electricity consumption in the sectors of the national economy, possibilities of using electric energy, and overall balance of electricity and sources of energy. The third chapter presents an overview of usage and consumption of electrical energy in the neighboring European countries as well as in the most interesting countries of the World. The fourth chapter contains statistical analysis. The first part of the chapter details a list of the analyzed quantities of individual consumptions, of the investigated factors, and the analyzed countries. Further, the chapter explains the method of statistical analysis via using simple and multiple regression and its subsequent application and evaluation for the Czech Republic and the others European countries. According to the result, it is GDP that has the main impact on the trends in the course of consumption of electricity. However, it is necessary to consider other factors influencing the consumption of electricity, too, and not rely solely on GDP in terms of long-time prediction of electricity consumption. The fifth chapter discusses the reduction of electricity consumption and savings, which can be both political and macroeconomic result. Quantification of savings is not always unequivocal and any cost-saving actions can lead to an increase in electricity consumption, which can, in effect, be bigger than any possible savings.
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Optimization proposal of size of PV systems
Vrzal, Martin ; Baláš, Marek (referee) ; Pospíšil, Jiří (advisor)
The master thesis deals with proposal of size optimization of PV systems. According to results of optimization, alternative solutions of photovoltaic system were proposed for family house. From the perspective of costs efficiency were compared investment costs and savings of implementation of electricity supply directly to private consumption. Particularly for each of the proposed solution, profitability assessment of comparing purchasing costs and returns on investment was performed. Theoretical part of the master thesis consists of introduction into solar radiation principles, structure and functionality of photovoltaic systems, electronics inverters and accumulation of electric energy. The practical part is focused on measuring of electricity consumption in particular family house, calculation of sunlight intensity hitting tested house, making various solutions of photovoltaic power plants placed on the family house in order to evaluate returns on investments. In conclusion are summarized all results of investigated solutions according to economics aspects.
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Energy balance of urban wastewater treatment plants
Čížová, Barbora ; Bartoník, Adam (referee) ; Hluštík, Petr (advisor)
The research part of the diploma thesis is focused on an issue of energy consumption in sludge treatment at wastewater treatment plants divided by the number of population equivalent. The aim of the practical part is to set indicators and propose evaluative criteria concerning energy performance of urban wastewater treatment plants. The verification of proposed criteria and energetic analysis result from data of the wastewater treatment plant in Novy Jicin.
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Energy Performance of sewerage networks
Žďára, Jan ; Hluštík, Petr (referee) ; Raclavský, Jaroslav (advisor)
First section of this master thesis is background research of energy demand of sewer systems. Intrudoctory chapter explains basic concepts. Second chapter is dealing with Czech and European legislation concerning energy consumption of water service. Third chapter describes energy demand of sewer systems. In this chapter there are described conventional gravity, vakuum and pressure sewer systems and components with major power consumption. Fourth chapter describes actual state of energy demand of WWTP and possible ways of improving power consumption of WWTP. Second section is a review of energy consumtion of vacuum systems of five different municipalities including one WWTP. Measured and evaluated outputs were used to create energy audit methodology for sewer systems.
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Energy meter with PLC communication
Szalbot, Michal ; Mlýnek, Petr (referee) ; Koutný, Martin (advisor)
Our thesis is about development of equipment, which combine two technology. First technology is wattmeter which is used to energy measurement and second is Power line communication. Wattmeter needs two variables for measurement, voltage and current. Voltage measurement is less difficult than measurement of current. Voltage can be reduce and measured by A/D converter. Current has to be transform to voltage and than can be measured same way. To do that we use current transformer. Than we design program for the microcontroller, involvement and PCB. Wattmeter is connect to PLC modem which has been chosen. Fusing this two technology we create wattmeter network. Next step was program which is used to network control and data collecting. This data are used to create charts in web application.
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Power consumption analyzer
Spielmann, Ondřej ; Galetka, Josef (referee) ; Götthans, Tomáš (advisor)
The subject of master’s thesis is introduction with the principles of measuring voltage, current and electrical power in DC and AC systems. Is designed measurement system for normal household. Measurement system includes pricing and client billing. User interface Ethernet-based is implemented.
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Energy performance of wastewater treatment plants
Čížová, Barbora ; Bogáňová, Ida (referee) ; Hluštík, Petr (advisor)
The retrieval part of the bachelorś thesis deals with legislation concerning energy audit and energy audit processing at wastewater treatment plants. Further work is aimed at assessing the energy performance, energy optimization and operation of energy self-sufficiency wastewater treatment plants. The practical part is focused on the comparison of the specific energy consumption for wastewater treatment in Koprivnice. The aim is to assess the energy performance of the selected indicators. This is an assessment of the m3 of waste water, kg BOD5 removed and the number of population equivalent.
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Comparing milking equipment in parlor and in operation with milking robot
MONDEK, Jan
This bachelor thesis deals with the technice and technology used for obtaining of milk. The first theoretical part describes basic important operations during milking and summary of the techniques and technologies. The sekond part of the thesis contains comparing of electrical consumption in parlor and electrical consumption in milking robot.
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What are the costs and benefits of daylight saving time?
Kožušková, Kateřina ; Bartoň, Petr (advisor) ; Schwarz, Jiří (referee)
Daylight saving time (DST) was implemented with purpose to maximize use of daylight and thereby reduce electricity consumption used for lighting. This policy would primarily affect energetics, however its influence was shown in many other areas. The thesis contains general assumptions of daylight saving time impact on electricity consumption and the main goal of the thesis is to identify with the natural experiment whether the extension of daylight saving time till the end of October occuring in Czech republic in 1996, led to savings of electricity consumption. Observed period is September and October between years 1993 and 1998. First, the difference in consumption between days with DST and without DST is investigated. On days with DST the consumption was lower than on days without DST. The two other regression analysis are devoted to the effect of the introduction of DST in October. First, the analysis included both observed months, the effect of extending daylight saving time however was not demonstrated. Further, October as itself is analyzed. October consumption was reduced by approximately 2,4 % in three years after the introducion of DST, compared with three previous years, when DST was not implement in this month.
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