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Thermoelectric device with Peltier elements
Klír, Tomáš ; Říha, Kamil (referee) ; Rampl, Ivan (advisor)
This bachelors thesis contains description of particular components of the biological termostat. There is described Thermoelectric effect and Peltier element, witch it use. The text describes the most common methods of temperature measurement. For its management are described basic types of regulators - P, PI, PD, PID and PSD. This work contains the theoretical description and methods for the determination of their parameters. There are also described circuit elements for performance management of Peltier element and microprocessor and a description of control program of the microprocessor.
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Design and construction laboratory exercise with Peltier cell
Mejzlík, Michal ; Šlezingr, Jan (referee) ; Macháček, Jan (advisor)
The introduction of this paper describes three thermoeletrical effects and their properties. It also deals with thermoelectrical cells, which are using Seebeck´s and Peltrier´s effects. The paper decribes principles how the Peltier´s cells work, their mathematical model, construction and practical use. The paper shows what kinds, shapes and output we can meet at the market and which kinds of parameters regulate their selection. The paper suggests the possibility to measure characteristic behaviour and quantity during laboratories tasks and their evaluations. At the conclusion is adduced the suggestion of laboratory task together with theoretically made pilot protocol.
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Peltier temperature controller
Průcha, Jan ; Hanák, Pavel (referee) ; Rampl, Ivan (advisor)
Bachelor thesis contains a description of all functional elements of biological thermostat. There is described Peltier element and Peltier effect, in which it is based. For power control of Peltier element there are described different types of regulators - PID, PSD and ways of determining of controller parameters. Control of the element is realized by PIC microcontroller, specifically the PWM module. There are explained most frequent methods of temperature measuring, circuit elements for controlling the Peltier element and other important pieces of this device.
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Physical analysis of the main processes in the solid oxide fuel cells and their mathematical description
Vágner, Petr ; Maršík, František (advisor) ; Souček, Ondřej (referee)
Solid oxide fuel cells (SOFC) are mainly used as large stationary elec- tricity sources, therefore an every little improvement in their performance leads to considerable savings. In order to understand the fundamentals of the SOFC operation, we have developed a new model describing the main physical processes. The thermodynamical model of SOFC, developed in this thesis, concerns the gas transport, the transport of the charged particles in- cluding the thermoelectric effect and the electrochemical reactions. Linear irreversible thermodynamics is the key modelling framework, in which the dusty gas model and the Butler-Volmer equations are used. A new relation between the electrochemical affinity and the overpotential is introduced into the Butler-Volmer equation. A weakly formulated statinonary system en- dowed with boundary conditions is solved with the finite element method in one dimensional approximation. 1
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Peltier temperature controller
Průcha, Jan ; Hanák, Pavel (referee) ; Rampl, Ivan (advisor)
Bachelor thesis contains a description of all functional elements of biological thermostat. There is described Peltier element and Peltier effect, in which it is based. For power control of Peltier element there are described different types of regulators - PID, PSD and ways of determining of controller parameters. Control of the element is realized by PIC microcontroller, specifically the PWM module. There are explained most frequent methods of temperature measuring, circuit elements for controlling the Peltier element and other important pieces of this device.
|
|
|
Thermoelectric device with Peltier elements
Klír, Tomáš ; Říha, Kamil (referee) ; Rampl, Ivan (advisor)
This bachelors thesis contains description of particular components of the biological termostat. There is described Thermoelectric effect and Peltier element, witch it use. The text describes the most common methods of temperature measurement. For its management are described basic types of regulators - P, PI, PD, PID and PSD. This work contains the theoretical description and methods for the determination of their parameters. There are also described circuit elements for performance management of Peltier element and microprocessor and a description of control program of the microprocessor.
|
|
|
Design and construction laboratory exercise with Peltier cell
Mejzlík, Michal ; Šlezingr, Jan (referee) ; Macháček, Jan (advisor)
The introduction of this paper describes three thermoeletrical effects and their properties. It also deals with thermoelectrical cells, which are using Seebeck´s and Peltrier´s effects. The paper decribes principles how the Peltier´s cells work, their mathematical model, construction and practical use. The paper shows what kinds, shapes and output we can meet at the market and which kinds of parameters regulate their selection. The paper suggests the possibility to measure characteristic behaviour and quantity during laboratories tasks and their evaluations. At the conclusion is adduced the suggestion of laboratory task together with theoretically made pilot protocol.
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