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Thermoelectric generators and their use with renewable energy sources
Bajgl, Tomáš ; Radil, Lukáš (referee) ; Baxant, Petr (advisor)
This work revolves around the principle of thermoenergy transforming into electrical energy by using a thermoelectrical generator. It is divided into these sections – theoretical, practical and experimental measurement. In the theoretical section, each thermoelectrical phenomenon is described, the properties of various materials used for production are listed, including their electrical properties and constructions. Then the attention switches to the currently available systems. The practical section includes a design for a device, which purpose is to recharge a mobile phone by using thermoelectric generators, and that section is followed by the elaboration of the measured values.
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Thermoelectric generator for flue-gas duct of boiler to convert low-temperature waste heat to electricity
Třináctý, Jiří ; Baláš, Marek (referee) ; Brázdil, Marian (advisor)
With the dwindling supply of fossil fuels is increasing interest in the most efficient use of primary energy sources. In many of today's devices leaving a considerable part of the fuel energy wasted in the form of waste heat. As a partial solution suitable to demonstrate the application of thermoelectric generator, or devices that convert heat energy directly into electrical energy. The trend in recent years shows the growing interest in this technology and the development of new thermoelectric materials. In addition to the use of waste heat thermoelectric generators can be found in a number of other applications, primarily as a source of electricity in conditions where required minimal maintenance, reliability, reliability and durability. Text is divided into three parts: a theoretical part, the part dealing with the design and implementation of the generator, and a final evaluation. The theoretical part includes a description of the basic thermoelectric phenomena, thermoelectric materials and their properties, a description of the main components of thermoelectric generators and applications in which the thermoelectric conversion uses. Part of the design and implementation deals with the design of thermoelectric generator for chimney flue and comparison of the proposal with real measured values.
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Thermoelectric Power Generation System
Brázdil, Marian ; Nerud, Pavel (referee) ; Pospíšil, Jiří (advisor)
In the last decade there is a rising interest in thermoelectric applications. Thermoelectric generators enabling the direct conversion of the heat into the electricity become attractive. This fact is caused by the demands of environmental operation and saving primary resources. Scientists intensively investigate and develop new materials and structures suitable for these applications. The efficiency of the thermoelectric conversion progressively increases. Unfortunately we have no available materials with sufficient thermoelectric properties which could provide cost-competitive price. Thermoelectric generators seem to be useable devices. For example, in case of the unused waste heat using of the thermoelectric generator can increase the overall effectiveness of the unit despite the low efficiency of the generator. This master thesis deals with the issue of the Peltier modules representing the main part of the thermoelectric generators. The physical principles and structures of the thermoelectric modules and the possibility of thermoelectric power production are described here. In the practical part of this thesis the design of the low power generator utilizing waste heat from biomass boiler Verner A 251.1 is proposed.
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Applications of thermoelectric generators
Kopřiva, Lukáš ; Pospíšil, Jiří (referee) ; Brázdil, Marian (advisor)
This bachalor thesis is about thermoelectric generators and their utilization. Basic physical principles of thermoelectric conversion and design of thermoelectric devices are described at the beginning. Next part of thesis is related to practical applications of themoelectric generators. Applications that using fossil fuels, waste heat and renewable energy are mentioned. Conclusions and evaluations of their usefulness are made at the end.
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Thermoelectric Generator
Kozák, Jan ; Ančík, Zdeněk (referee) ; Vlach, Radek (advisor)
This thesis describes the design and construction of a device that would allow measure the basic characteristics of thermocouples. These thermocouples are often known in the literature as TEG ( ThermoElectric Generators)
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Using thermoelectric generator to increase the efficiency of the radiator
Kříž, Pavel ; Janák, Luděk (referee) ; Vlach, Radek (advisor)
This diploma thesis deals with a design layout of the fan power supply that ensures the increase of the efficiency of the heating unit. For usage in the areas without electric power, the power supply is secured by thermoelectric generator. The system has to function on the basis of autonomous system which turns itself on only when necessary. In the introductory part of the paper there is a recherché of thermoelectric generators for general usage. Next it mentions the basic findings in from the field of DC/DC converters for low power applications. In this part attention is given to MPPT algorithm. Furthermore basic knowledge from the field of heat transmission together with its most used elements is described. Subsequently existing applications that increase the effectiveness of heating are mentioned. Their disadvantage however is that they depend on the external source of power supply. The practical part to a large extent covers the analysis of the suitability of the chosen thermoelectric module. For securing of the heat gradient of the generator there was a model created meeting the figures in the manual and there are several simulations in the MATLAB program. Furthermore several measurements of the thermoelectric module took place in order to secure realistic figures. Subsequently a DC/DC converter was chosen. Finally the testing was made on the real composition. In conclusion there is an overall evaluation including the real usage and the economical aspect of the project. The outcomes of the work enable to avoid common mistakes that are part of many specialized articles. The created system is to be used after the adjustment of the cooling to the required aim. At the same time it becomes very effective.
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Thermoelectric Generator
Štetina, Jakub ; Ančík, Zdeněk (referee) ; Vlach, Radek (advisor)
This thesis describes measuring of thermoelectric modules and building of the device, which would serve as an emergency electric energy source for specific purpose on the basis of ther-moelectric effects. We use thermoelectric generators (TEG).
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Low potential heat for electrical power generation
Dobiáš, Jiří ; Radil, Lukáš (referee) ; Bartošík, Tomáš (advisor)
This bachelor’s thesis deals with low potential heat sources for electrical power generation. It mentions primarily low potential heat sources, their distribution by origin and where you can find such resources. Another part deals with the technology that uses low potential heat to heat production of higher temperature level and power generation. These are discussed here with a heat pump, regenerative heating, Stirling engine, solar collectors, Peltier cells, etc. In addition is to their use in practice. The last chapter deals with the replacement of the heater in the regeneration heating coil from the solar collectors. It is thus the use of renewable energy sources. Carry out technical and economic calculations for the real utility of such a plan.
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