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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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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.
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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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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.
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Optimization of District Heating Nets Components Simulations
Kudela, Libor ; Klimeš, Lubomír (referee) ; Kořista, Milan (referee) ; Pospíšil, Jiří (advisor)
The thesis aims at the computational solution of district heating networks, their numerical optimization, and predictive control considering heat accumulation. Previous studies avoid using the so-called element method because of its computational expensiveness. However, in combination with current development in scientific computing, it adds a new dimension to the old method. This thesis presents a new simulation model of a district heating pipe with complex physics and efficient inverse problem-solving capability, which is the core of predictive control. The findings acquired in this dissertation allow us to maximize the computational effectiveness of simulation components found in district heating networks
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Accumulation of energy in "heat batteries"
Janečka, Filip ; Kudela, Libor (referee) ; Pospíšil, Jiří (advisor)
Thermal energy storage is an important alternative to other, more common methods of energy storage, such as electrochemical batteries, as most of the energy used in homes is in the form of heat. The use of thermal energy storage therefore skips the step where electricity is converted into heat, which can increase the efficiency of the whole process and reduce energy costs. In this paper, five important thermal energy storage methods are described and evaluated with respect to their use by an individual in a single family home as well as for use in high energy demand applications (central heating, power generation, etc.). The five heat storage methods are: ground storage, sand storage, PCM (phase change material) storage, thermochemical storage and hydrogen storage. Emphasis is placed on highlighting the advantages and disadvantages of each type of thermal storage reservoir, showing pilot implementations and comparing them with each other. Furthermore, an evaluation of the seasonal storage capability of the different thermal storage systems is made, which shows that the only storage guaranteed to be capable of almost unlimited storage time is the thermochemical storage system. Also in this work, a water heat storage tank for a single-family house is proposed, which was chosen because of its good scalability, proven functionality and relatively simple design.
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Design of a heat exchanger in a nuclear power plant
Kocanda, Tomáš ; Kudela, Libor (referee) ; Milčák, Pavel (advisor)
This bachelor thesis focuses on the design of heat exchange in nuclear power plant, more specifically on low-pressure heater 2. The introduction of bachelor´s thesis deals with the introduction of nuclear energy and nuclear power plants. The following chapters describe low-pressure regeneration as well as low-pressure heater. In the last part of the work, the heater is calculated from the entered values and values subtracted from the overall thermal scheme of the secondary circuit of the Dukovany nuclear power plant.
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Energy gains of agrofotovoltaics
Huf, Milan ; Kudela, Libor (referee) ; Pospíšil, Jiří (advisor)
This master's thesis focuses on the possible synergy between agricultural activity and solar energy production. The theoretical part of this work begins with the processing of theoretical knowledge in the field of photovoltaics. Furthermore, the concept of agrophotovoltaics is explained, its advantages and possible types of installation are introduced. Furthermore, existing installations around the world are presented and the situation around agrophotovoltaics in the Czech Republic is outlined. The practical part of the work is focused on the creation of the model and its programming so that the panels create shade for cultivated crops. The conclusion of the thesis is devoted to the design of an agrophotovoltaic installation in the Brno area and the assessment of its technical and economic aspects.
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