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Thermal management system design for cylindrical lithium cell testing
Skalník, Adam ; Stravová, Zuzana (referee) ; Vlach, Radek (advisor)
The aim of this thesis is to design a device that allows testing of cylindrical lithium cells by testing the load at controlled temperature. To achieve the desired temperature range, a custom thermoelectric model of the TEC cell with temperature dependency of the parameters was developed and a suitable cooling method for the cells was selected. A thermal model was developed for this cooler. A simplified model of the 18650 type lithium battery was created. Based on FEM analysis, the expected temperature loss on the battery, the temperature gradient on the battery and the dynamics of transients were determined. An overall thermal model of the system was developed, according to which the appropriate number and type of TEC cells were selected. Optimal supply currents for this cell configuration were determined and control was designed. The thermal model and the required characteristics were verified on a prototype of this device.
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Control and regulation of the temperature of the drug transport box
Maťašová, Daniela ; Králík, Martin (referee) ; Sekora, Jiří (advisor)
This bachelor thesis deals with the solution of drug transport in a transport box over longer distances. The work also deals with sensors for temperature measurement and methods of its control and regulation. The essence is the design, implementation and verification of the functionality of the transport device, which allows the display of continuous information about the state of the temperature inside the transport box. Temperature control is powered from the car’s on-board network and temperature sensing is powered independently. The transport device allows the setting of the limit temperature up to 35 °C, while exceeding it is indicated by an acoustic and visual alarm. The transport box, which is the result of the work, allows the transport of drugs, and ultimately meets all the requirements of the assignment.
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Autonomous outdoor system for growing plants
Schmidt, Dominik ; Lukeš, Zbyněk (referee) ; Petržela, Jiří (advisor)
This diploma thesis deals with maintaining possibilities for appropriate climatic conditions in outdoor greenhouse. The importance for growing plants is an appropriate temperature, humidity and adequate supply of water. The aim of the study is to suggest an apparatus sustaining beforehand defined conditions in the greenhouse with minimal requirements for maintenance. Apparatus uses analogue control by applying photosezistor and thermistor. For power supply are DC-DC converters used.
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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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Temperature control in bioreactor
Pospíchal, Zbyněk ; Václavek, Pavel (referee) ; Blaha, Petr (advisor)
This thesis deal with improvement behavior of temperature control in bioreactor. It was created model of system. Basic PI controller could solve all problems. After analysis of system were decided to used fuzzy controller. Fuzzy controller in comparison with classic PI controller has better behavior in this application.
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Design of miniature thermal chamber
Červínek, David ; Bastl, Michal (referee) ; Chalupa, Jan (advisor)
This thesis is about designing and bulding temperature chamber. Main use for this chamber is to test devices which are designed in Mechlab laboratory. While I was developing this chamber I used Simuling for simulation of thermodynamic events. For LC filter simulation I used LTspice IV. Peltiers device is used as cooling/heating element. For calculation and control is used 3.5“ touch screen programmed in 4D Workshop. Final device is capable to automatically maintain set temperature in range of -13°C to 80°C. Temperature can be set as stationary or cyclic between two predefined temperatures. User can also choose temperature that will be used by regulator.
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Camera for biological applications
Jurák, Petr ; Slovák, Jiří (referee) ; Kubíček, Michal (advisor)
This diploma thesis is focused on the design of IP blocks for thermal camera. This termal camera is intended for plant research. The main part of the thermal camera is an infrared detector that detects a frequency in the range of 8 – 14 m. The analogue signal obtained is modified and subsequently digitized. The detector also includes a Peltier device which is designed for both detector cooling and heating, and is controlled by an external signal. The MicroZed development board implements IP blocks. The thermal camera is designed to be controlled from the MicroZed board. Device analysis is first described from the theoretical part to the design of IP blocks.
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Thermoelectric cell (TC)
Přidal, Oldřich ; Beneš, Petr (referee) ; Bejček, Ludvík (advisor)
This thesis is parted to several sections. Firstly is dealt about problems of measuring temperature with thermocouple sensors. Secondly are described basic principles of thermoelectric modules and resistance temperature detectors. Thirdly is written about design and realization of workplace for BMFV, MSNV and MMNV classes. Finally is shown results of experimental measurement.
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