|
|
Trends in renewable sources and in modern energy
Kotas, Tomáš ; Preisler, Lukáš (referee) ; Kudela, Libor (advisor)
The bachelor thesis deals with the issue of renewable energy sources. Renewable energy sources are categorized and extensively described, including the principles of their functions and basic parameters. The thesis further focuses on the development of the position of renewable energy sources over the years compared to non-renewable energy sources worldwide and in the Czech Republic. This development is monitored in terms of both electricity and heat. Statistics indicate that the share of renewable energy sources in both forms of energy is increasing. The thesis also analyzes the origin and course of discussions related to this issue, including climate change and international cooperation. Possible predictions and specific scenarios related to the energy vision are provided for both the Czech Republic and on a global scale within the thesis. All scenarios agree on the same future trend – an increasing share of renewable energy sources at the expense of non-renewable sources. In conclusion, the thesis addresses current trends in technologies in modern energy, with the most significant technological progress in recent years observed in the fields of electromobility, hydrogen, and CCUS. The final chapter discusses methods of energy storage.
|
|
|
Evaluation of the development potential of the production restriction plan for PV and Wind power plant
Petryšak, Vladimír ; Pistora, Martin (referee) ; Bátora, Branislav (advisor)
This thesis deals with evaluation of the development potential of the Production restriction plan for PV and Wind power plant. The aim of the thesis is to analyze the possibilities of integrating various types of renewable energy sources into this plan, which aims to regulate electricity production from these sources in extraordinary situations. The thesis describes current technical and legislative possibilities for curtailing renewable sources used in the Production restriction plan, addresses the obligations of electricity producers, and proposes recommendations for further development of the Production restiction plan for renewable energy sources (RES).
|
|
|
NetZero – carbon neutral living in Brno
Thunová, Nicola Vanesa ; Gebauer, Pavel (referee) ; Sedláček, Michal (advisor)
The diploma thesis deals with the design of an apartment block conceptually designed as a carbon-neutral building in Brno. The selected object is a continuation of the pre-diploma project PURE CITY, in which a set of buildings was designed as part of the urban study, which dealt with the issue of NET ZERO within the urban and social scale. The demarcated area is located in the cadastral area of Starý Lískovec on Jihlavská street near the new Západní Brána (West Gate) stop and not far from the campus of the Bohunice Faculty Hospital. The NET ZERO concept deals with sustainability and the effort to achieve a neutral balance of carbon footprints throughout the building's life cycle. The inner block is designed as a set of 8 housing sectors. The inner space of the park-like courtyard is used for staying and relaxing and is a completely private space for the residents of the block. The building in the corner parts reaches up to 7 above-ground floors, thus responding to the orientation to the cardinal points. In terms of shape, it prescribes a rational rectangular shape from the north side, but on the south side, the facade is slanted, as it was necessary to give way to the ongoing existing communication. The apartments are designed in several categories and mainly aim at the density of the population. The apartments are complemented by spacious balconies, and the apartments on the ground floor have terraces located at the street line, which demarcate public and private space with a double barrier and height difference. The height difference thus also responds to the descending terrain, which reaches a height difference of up to 3.5 m on the southern side. On the ground floors in direct contact with the street line, active parterres with smaller shops or services are designed, or WORK and LIVE housing units, which combine work environments, such as studios, with living space. These spaces are designed over 2 above-ground floors in the style of a loft apartment. The roof plane is designed as flat roofs in several height levels, on which are located private terraces for residential apartments, located on the highest floors, as well as community gardens for residents of the inner block, and a large part is occupied by an extensive green roof supplemented by photovoltaic panels for pumping solar energy.
|
|
|
Seasonal variation in renewable energy supply
Rymešová, Lucie ; Škorpík, Jiří (referee) ; Linda, Jakub (advisor)
This bachelor’s thesis focuses on seasonal fluctuations in energy supply from renewable sources, specifically photovoltaic and wind power plants. It includes a literature review on renewable energy sources and their importance in the energy sector. It further explores the principles and utilization of photovoltaic and wind power plants. The thesis analyses seasonal fluctuations in energy supply by processing data from the ČHMÚ station and examines their impacts on the energy system. The results of the analysis of seasonal fluctuations are presented and compared. It is evident that solar energy has the largest share during the summer months, while wind energy has the highest contribution during the winter months. The results suggest that a suitable combination of photovoltaic and wind power plants could suppress seasonal variations in electricity supply and contribute to its stable production within smaller energy units.
|
|
|
On-line calculators for the design of renewable energy installations
Ondráček, David ; Pospíšil, Jiří (referee) ; Linda, Jakub (advisor)
This thesis focuses on the field of renewable energy sources (RES). It focuses on the topic of computational tools that manage the design process of a system using RES. These tools are introduced, their calculation methodology is described and then they are evaluated. As a part of this thesis there is also introduced a design of a unique calculation tool. This tool calculates the energy balance of a dwelling using solar energy and a heat pump.
|
|
|
Analysis and Verification of Operating Characteristics of Grid and Hybrid Inverters
Vrána, Michal ; Braciník,, Peter (referee) ; Dvorský, Emil (referee) ; Mastný, Petr (advisor)
The thesis is an annotated collection of articles focused on the field of verification of inverter operating characteristics and their impact on the operation of the distribution system. The operating characteristics are assessed with respect to the national requirements in the Czech Republic. Within the framework of the solution, articles were published in foreign impacted and peer-reviewed journals and indexed proceedings of foreign and domestic conferences. The main result of the dissertation is the design and implementation of a laboratory workplace for verification of operating characteristics. For the workstation, software equipment was designed and implemented for testing process automation of both, the physical workstation and the virtual testing. By reconfiguring the workstation, it is possible to create a facility for simulating and verifying the effect of autonomous functions on the distribution system within the framework of experimental installation in laboratory conditions or field testing.
|
|
|
Financial return of home photovoltaic power plant
Jančík, Josef ; Malý, Milan (referee) ; Mauder, Tomáš (advisor)
This thesis if focused on return on ivestment evaluation of a photovoltaic system of residential house. The calculation is made for photovoltaic system with and without accumulation and in combination with other alternative source – heat pump. The costs of instalation and working of new systems are then compared between each other and with the cost of working of a current system without photvoltaic.
|
|
|
Pilot project on flexibility management at LV level
Sýkora, Jan ; Pilař, Martin (referee) ; Radil, Lukáš (advisor)
The thesis deals with the topic of flexibility, especially on the demand side. It includes the definition of terms related to the issue, the basic principles of operation and possibilities of use. The main researched branch of the study is the usage of the flexibility potential of heat pumps. The work is based on real data from a pilot project executed in the winter of 2021/22, which examines the portfolio of households with a heat pump and observes the possibilities of using flexibility, its management and especially the impact on load change depending on the estabilished baseline.
|
|
|
Preparation and characterization of unsaturated bio-polyester resins
Žůrek, Michal ; Petrůj, Jaroslav (referee) ; Figalla, Silvestr (advisor)
The theoretical part of this work is devoted to the selection of suitable components for synthesis of a branched oligoester and their structural arrangement. Further, oligomers of lactic acid esterified with crotonic acid branched by erythritol or pentaerythritol are discussed. Crosslinking of prepared oligoesters is accomplished by free radical mechanism using vinyl acetate as reactive diluent and 2,2'-azo-bis-isobutyronitrile as initiator. Resin was cured by vinyl acetate in different mass ratios. Results show that there in an optimal ratio for curing between oligoester and reactive diluent. Using less vinyl acetate results in insufficient crosslink density or, on the contrary, using considerable excess of vinyl acetate causes rapid polymerization, that also results in lower density of crosslinking. The crosslink density was determined indirectly by extraction of the soluble part to acetone after curing and drying of the product.
|
|
|
Energy from renewable sources and its storage
Navrátil, Ondřej ; Moskalík, Jiří (referee) ; Škvařil, Jan (advisor)
This work deals with renewable sources of energy and storage options. It is focused on electricity generation. There are presented types of renewable resources suitable for electricity production. The second part is an overview of all systems used for energy storage. In the conclusion is an assessment of renewable sources and a comparison of methods of energy storage.
|
guest ::
