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Reducing the energy demand of a family house
Ondrák, Adam ; Kudela, Libor (referee) ; Pospíšil, Jiří (advisor)
The thesis deals with the issue of reducing the energy intensity of a family house and it approaches this issue in three steps. Firstly, the examination of the heat loss of the whole building, using the standard ČSN EN 12 831 and thermal vision. Subsequently, this is followed by the choice of the most economically suitable solution, so that the most modern technologies for reducing heat losses can be utilized and the project repays as quickly as possible. Furthermore, we will find the most suitable variant of a photovoltaic power plant, with regard to different types of photovoltaic panels. In conclusion, the price of the entire project and its repay and then other measures, that could be used to reduce project costs or the acquisition of additional equipment to reduce energy consumption, are listed.
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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.
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Boilers for solid fuel
Zezulka, Patrik ; Kudela, Libor (referee) ; Baláš, Marek (advisor)
This bachelor thesis deals with the heating of houses with boilers for solid fuels. Thesis is divided into several parts. In the first part is dealt with most common solid fuels, their characteristics, composition and modifications for house heating. The second part is focused on solid fuel boilers, describes chosen boilers, their operation, their advantages and disadvantages. In the last part is economically assessed the suitability of selected solid fuel boilers for heating the model house.
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„Smart cities“ and decentralized production of energy
Opátová, Alexandra ; Kudela, Libor (referee) ; Špiláček, Michal (advisor)
This bachelor thesis describes the principles of decentralized energy sources, together with the advantages or challenges that concern the problem. The first chapter describes the concept of "smart city" and the field of use. There are also described options for modeling of urban areas as a unit. The second chapter focuses on the concept of decentralized power generation and the benefits that such a system can offer. The following chapters deal with cogeneration units and electricity storage options. The last chapter focuses on a issue of integrating decentralized power generation into the grid and compares various mathematical models and possibilities of regulation.
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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.
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Heat exchanger design
Tatýrek, Lukáš ; Kudela, Libor (referee) ; Baláš, Marek (advisor)
The designed heat exchanger is part of a cogeneration unit, which I am considering as a possi-ble alternative for acquiring electrical and heat energy during heating season. The objective is to compile research about usable heat exchangers, pick a suitable technology for flue gas water application, calculate and design a heat exchange surface, calculate pressure drops and pro-cess the enclosed drawing documentation of the heat exchanger. For calculations, the recuper-ation gasket plate heat exchanger was chosen. The design of gaskets is nonstandard as it has been made for higher than usual temperatures. The result of this work is a heat exchanger with uncommon dimensions with a very low count of plates.
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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.
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Heat pump for resident heating
Abrahám, Jan ; Kudela, Libor (referee) ; Pospíšil, Jiří (advisor)
The bachelor thesis deals with the use of a heat pump for heating a family house. In the theoretical part of the thesis the principle of operation of the heat pump is introduced. This part also explains the coefficient of performance and describes the different types of heat pumps according to the heat source with their advantages and disadvantages. In the practical part the thermal losses of the selected building are calculated. The heating system is designed and finally the economical evaluation and the return of investment are determined.
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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.
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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.
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