|
|
A test setup for thermal cycling of thermoelectric modules
Preisler, Lukáš ; Kudela, Libor (referee) ; Brázdil, Marian (advisor)
The present work is focused on thermoelectric modules and testing modes. Failures of thermoelectric modules occur due to the cyclic thermal stress in real applications and their power parameters decrease. Hence an experimental study of thermoelectric modules was executed, which measured parameters of thermoelectric modules and thermal cycling testing methods. In the practical part of this document, the thermal cycling conditions of thermoelectric modules were set-based on the previously stated study. A bipolar-pulse load in range +3,0 V and 3,0 V was proposed alternating after 90 seconds. For comparison of the modules among producers 200 cycles will be made. According to the cycling conditions, construction adjustments of current laboratory testing platform are proposed. The current platform is currently set to measure parameters of thermoelectric modules and is not for cycling load testing.
|
|
|
Circuits of nuclear power plants
Pavlíček, Martin ; Kudela, Libor (referee) ; Milčák, Pavel (advisor)
This bachelor's thesis deals with the history and beginnings of nuclear energy, an explanation of the basic knowledge of nuclear energy and an introduction to the issue. Then, the division of nuclear reactors according to various criteria is described. Furthermore, the solution of individual circuits in a nuclear power plant is described according to the type of reactor used. The individual circuits are described at the Temelin nuclear power plant. The last part deals with nuclear safety and various safety systems, without which a nuclear power plant could not be started.
|
|
|
Heat exchanger design
Jílek, Tomáš ; Kudela, Libor (referee) ; Špiláček, Michal (advisor)
This bachelor thesis deals with the design of a tube heat exchanger for water - water media, which is part of a cooling circuit. The thesis contains basic description and distribution of tube heat exchangers. It also includes designing and calculating geometric dimensions, calculating the pressure losses in the pipe and intermediate flange spaces and calculating the actual output of the heat exchanger. Part of the thesis is also drawing documentation of the proposed heat exchanger.
|
|
|
Assessment reduced heat loss of an apartment house
Šimková, Nikola ; Kudela, Libor (referee) ; Baláš, Marek (advisor)
The rising trend in energy prices has led to the search for options to reduce its need. The bachelor thesis deals with the assessment of the heat loss reduction for an apartment building. In the introduction, it deals with factors affecting the energy consumption for heating. It reviews the heat loss of a building and possibilities to minimalize it, which leads to an energy performance reduction. Subsequently, it deals with the calculation procedure of the design heat loss for the model apartment building before and after the implementation of measures to reduce heat losses. In the end these two states are compared and evaluated with each other The result is an assessment of the reconstruction benefits.
|
|
|
Optimation and Innovation of Heating by Thermal Pumps
Petr, Jan ; Kudela, Libor (referee) ; Lisý, Martin (advisor)
The Bachelor’s Thesis adresses heat pumps, its description, comparison and assessment of heating of the model house. In the first part the research is done. The research describes on what principles the heat pump works and how they differ. In the second part, the model house is described. Heat losses are calculated. For two types of heat pumps are calculated returns on investments.
|
|
|
The course of energy prices since 1989 and its impact on HVAC
Kudela, Libor ; Klimeš, Lubomír (referee) ; Jaroš, Michal (advisor)
The aim of this thesis is to compile data about prices of basic energy used in HVAC in region of Czech Republic since 1989, analyse its course and purchasing power of Czech population. This thesis has also concerned advantages and pertinent impacts on preferred ways of improving indoor conditions. Based on this knowledge a recommendation for choosing heating system for residential building was drawn up.
|
|
|
Heating the house by heat pump
Pinkas, Jan ; Kudela, Libor (referee) ; Pospíšil, Jiří (advisor)
The point of this bachelor thesis is a family house heating with a use of a heat pump. In the first part of the thesis the principle and working of a heat pump are explained. Also the basic sources of energy for the heat pump including their pros and negatives are talked over. Secondly in the practical part thermal losses and energy consumption of the chosen house are calculated. Based on those calculations the heat pump and the heating system are chosen. In the end the investment is evaluated.
|
|
| |
|
|
Aerodynamic Calculation of Air Part of Steam Boiler
Kudela, Libor ; Milčák, Pavel (referee) ; Lisý, Martin (advisor)
The aim of this thesis is to realize analysis of problematics of aerodynamic calculations of steam boilers on the part of combustion air. On the basis of project documentation realize evaluations of sectional dissipation factors of each component of inlet tract. Realize calculation of summary pressure (draft) loss. Specify components with highest loss and propose options of their optimization.
|
|
|
Photovoltaic systems
Fenyvesi, Aurel ; Kudela, Libor (referee) ; Toman, Filip (advisor)
The aim of the bachelor thesis was to provide a comprehensive overview of photovoltaic systems, their applications, and to present possible directions for their development. The thesis has a research character. It is presented in five chapters. First chapter explains the usability of solar radiation. Second chapter describes the photovoltaic cell, its principles of operation, electrical properties and defines four generations of development. Next chapter characterizes the different parts of photovoltaic systems. Fourth chapter defines the types of photovoltaic systems and their applications. The last, fifth chapter provides more detailed analyses of possible directions of development of photovoltaic cells, as well as, whole systems.
|
guest ::
RSS feed.