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Analysis of the photovoltaic cell cooling
Hřešil, Tomáš ; Vyroubal, Petr (referee) ; Maxa, Jiří (advisor)
This project solves the problem of cooling the photovoltaic cell. Solar cell was modeled according to a real model in SolidWorks, and subsequently created the model was simulated in SolidWorks Flow Simulation and Ansys Fluent. The use of both systems allow a comparison of their possibilities in the field of heat transfer and their suitability for the case. The conclusion summarizes the first results and outline further developments cooling design to optimize the performance of the solar cell.
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Photovoltaic celss for supplying low-demand electronic devices
Slivka, Ján ; Šimek, Milan (referee) ; Slavíček, Karel (advisor)
The aim of master’s thesis was to develop a method for long-term measuring the influence of temperature on photovoltaic cells and lithium-polymer batteries and to design such measuring system. System was assembled on universal printed circuit board. It consisted of circuits for measuring temperature, illuminance and charging circuit, which charged battery with capacity 110 mAh. The PV cell BSK-SP9261 was used as source. Voltages was recorded by data acquisition device NI-USB 6009 and loged in program developed in LabVIEW 2012 enviroment. Afterwards, temperature, illuminance, voltage on PV cell and internal resistance of battery were computed.
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Controll Electronics for Effective Supplying of Equipment with Li-Ion Accu by Solar Cells
Horký, Luděk ; Dřínovský, Jiří (referee) ; Urbanec, Tomáš (advisor)
This Bachelor`s thesis deals with questions surrounding the collection and harnessing of solar radiation for use as electrical energy. The aim of this project was to build an effective system for charging Li-Ion batteries by means of solar cells. To this end, four different solar panels currently available were chosen for measuring and evaluation. The most suitable of these was chosen and an electronic control system devised for effectively supplying the Li-Ion batteries. It was necessarily to make solution for problems consequent upont this method of charging this type of battery and make practise realizitaion of this electrical scheme by SMT technology.
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Optical Methods to Evaluate the Contractile Function of Isolated Cardiac Myocytes
Vadkerti, Kristián ; Rychtárik, Milan (referee) ; Čmiel, Vratislav (advisor)
Diploma work is focused on basic characteristics of optical measuring methods commonly used to rate contactions of isolated heart cell and describes basic actions, that are connected with it. A camera record made by a microscope served as basis for optical measuring methods of contractions chosen by us, with using appropriate method elaborating and analysis of pictures used for detection of important part of cell structure. The suggested user application built-up in Matlab environment allows analysis and interpretation of contractional functions in two methodical ways.
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Localization system making use of GPS and GSM
Klozar, Lukáš ; Pust, Radim (referee) ; Šebela, Radek (advisor)
Aim of this master´s project is to analyse localization possibilities in GSM and GPS wireless networks. Choise of proper module and design location device for both GPS and GSM networks. Design and construction of system, which is able to designate it´s positron, using both GPS and GSM networks. The location informations, are send to Internet server, using GPRS system. Localization techniques in both wireless network are described. The system which is able to get position information was designed and constructed. The module´s driving software and the software, which process the localization informations and controls the database storing process, was designed.
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Device for measurement of electrochemical cells characteristics by the cyclic voltammetry
Kučera, Vojtěch ; Bilko, Radek (referee) ; Lábus, Radek (advisor)
The thesis deals with observation of cells parameters. One of the potential solutions for observing the characteristics of cells are utilization the electrochemical analyse called voltametry. Its fundamental consists of loading variable voltage in between two electrodes dipped in electrolytic solution and monitoring flowing current. The point of the thesis is to build up the measuring workplace, which can provide this measurement. We suggest utilization of modern laboratory technique and connection the measuring instruments with PC. The first part of the thesis deals with theoretical knowledge of used functions and describes theirs mathematics definitions. The second part deals with proceeding of workplace realization, instrument connection with PC and development application in computer’s language. Result is measuring workplace, which can provide observing cells according to entered parameters.
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Usage and Future in Alternative Drive of Automobile
Žalman, David ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
The aim of this bachelor thesis is to state an overview of alternative drive of automobiles and their effect on ecology. The main part consists of a description of specific characteristics and peculiarities of power units, their advantages, disadvantages and shows examples of some vehicles. In the conclusion of the thesis it is foreshadowed in what way the car industry could proceed in the subsequent years.
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Small scale photovoltaic system
Vaľočík, Jan ; Škvařil, Jan (referee) ; Pospíšil, Jiří (advisor)
The aim of this work is utilization of solar energy for electrical energy production focusing on photovoltaics. First, the principle, function and structure of photovoltaic cells is described. Then the current types of cells are introduced, followed by possibilities on how to increase the production of electrical energy from photovoltaic modules. Subsequently the connection methods between the photovoltaic systems and the network are discussed. The thesis is concluded by a design of a small scale photovoltaic system for a family house including an economic evaluation.
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Photovoltaic, as an alternative source of electricity
Honka, Pavel ; Moskalík, Jiří (referee) ; Pospíšil, Jiří (advisor)
The work deals with alternative sources of energy and it concentrates on a photovoltaic. There are represented the main types of solar cells, the principles of their functioning and methods of increasing their efficiency. There is also a summary of possibilities of connection of the photovoltaic system and related methods of energy accumulation. On the basis of above mentioned extent of information there is suggested a project of photovoltaic power station which supplies a holiday house by produced energy.
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Lithium Sulphur Batteries
Juračka, M.
S+C cathode material was prepared by simple solid-state reaction in ball mill. Content of sulphur was approximately 80 wt. % in final sample. Cyclic voltammetry and galvanostatic charge/discharge techniques were used for characterization of the samples. Initial discharge capacity observed for S+C sample was 600 mAh/gsulfur. Capacity loss for S+C sample after 30th cycles was 66 %. Cycling loss is due to insoluble polysulfide formation. In this paper I present fundamental characteristics of Li-S batteries. This paper presents a principle of Li-S batteries, fundamental measurement and their evaluation. I present the techniques of measurement and preparation of cathode materials.
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