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Design of a photovoltaic power system with battery storage for household purposes
Velasquez, Juan ; Maule, Petr (oponent) ; Vaněk, Jiří (vedoucí práce)
The aim of this bachelor’s thesis is to design a solar photovoltaic energy system on a family house disconnected from the electrical grid. Furthermore, the thesis includes detailed information that might help understand how photovoltaic systems can supply energy and which factors may affect the efficiency of these. Two programs were used to simulate how the design would perform during a whole year. There were also mentioned their advantages and disadvantages.
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Off-grid street lamp design.
Hampl, Petr ; Karásek, David (oponent) ; Křenek, Ladislav (vedoucí práce)
The problem area of the project depicts the issue of actual transformation of energy resources and supply worldwide with the focus on renewable resources of energy. The stress is primarily laid on values of an object designated for public spaces. The author’s assignment was to design a lighting unit independent of an external power supply. The aim of the new design is to rethink the way in which technologies utilizing solar and wind power are commonly used, and to suggest a solution that brings new features, benefits and values for the user and society. Generally the author brings forward design that reflects actual global threats and opportunities. The result is a design of a street lamp that combines a wind turbine with a solar cell module in order to gain electrical energy which is stored in an accumulator and afterwards supplied to a luminaire. The lamp is designed with special consideration of aesthetics and ergonomics. The designed solution brings financial benefits in terms of saving the nonrenewable resources and possible money savings for the investor. Furthermore, the off-grid street lamp has a lower negative impact on the environment and demonstrates technologies utilizing solar and wind power in a friendly and unintrusive way.
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Design of a photovoltaic power system with battery storage for household purposes
Polášek, Radek ; Vanýsek, Petr (oponent) ; Vaněk, Jiří (vedoucí práce)
The aim of this thesis is to present the basics and functional principles of photovoltaics and photovoltaic systems, so that they can be later used design a photovoltaic energy system on a family house. The first part of this thesis deals with the theoretical introduction of photovoltaics and the individual components needed to design a photovoltaic system. The second part of the thesis then deals with the design and simulation of several variants of a system with different setups. The first type of analyzed and designed system is the off-grid system, whose primary objective in this design variant is to completely cover the consumption of the household. Although the total annual consumption of the selected household is not that high, achieving a complete self-sufficiency requires a very significant investment in system equipment., beyond the conventional design. The main cause of this are the problematic periods of low solar radiation through the year, especially during winter. As a result, the design of an off-grid system proves inadequate to the vision of the owners, even after the consideration of possible alternative versions of it. Alternative to an off-grid system is in our case a hybrid system which, unlike the first solution, also allows for connection to the grid to be supplemented by it during periods of low generation. After the introduction of hybrid system principles and analysis of possible financial subsidies, the individual hybrid system designs follow, each designed around a different focus point. The first simulated design is one aimed at as low initial investment as possible. This variant is also utilizing a virtual battery tariff, which allows, thanks to generated surplus energy, for to draw electricity from the grid at a reasonable discount. After the financial analysis, the system proves to be a relatively cheap variant, however, the potential investment return is not that promising. The second variant is intended as an imaginary middle ground between minimal and maximized approaches. it is composed of one fully covered roof area, with an adequate battery to support the modules. In addition, this system takes advantage of the sale of surplus generation on the market. Due to relatively high subsidy amount, combined with the surplus sale, the financial analysis of this system promises a return on investment during the first seven years of operation, with continually increasing positive numbers, when compared to the variant without a photovoltaic system. The third system is aimed at maximizing the potential gain, while staying under 10 kWp of installed power. Downside of this approach is a higher acquisition cost, but the estimated return on investment is significantly higher than that of the previous systems. In the last part, a multi-criteria analysis was performed to determine the most suitable system variant, in accordance to the requirements of the selected property owners. The results of this analysis showed the third system variant to be the most suitable, with a share of 47.6%.
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Design of a photovoltaic power system with battery storage for household purposes
Polášek, Radek ; Vanýsek, Petr (oponent) ; Vaněk, Jiří (vedoucí práce)
The aim of this thesis is to present the basics and functional principles of photovoltaics and photovoltaic systems, so that they can be later used design a photovoltaic energy system on a family house. The first part of this thesis deals with the theoretical introduction of photovoltaics and the individual components needed to design a photovoltaic system. The second part of the thesis then deals with the design and simulation of several variants of a system with different setups. The first type of analyzed and designed system is the off-grid system, whose primary objective in this design variant is to completely cover the consumption of the household. Although the total annual consumption of the selected household is not that high, achieving a complete self-sufficiency requires a very significant investment in system equipment., beyond the conventional design. The main cause of this are the problematic periods of low solar radiation through the year, especially during winter. As a result, the design of an off-grid system proves inadequate to the vision of the owners, even after the consideration of possible alternative versions of it. Alternative to an off-grid system is in our case a hybrid system which, unlike the first solution, also allows for connection to the grid to be supplemented by it during periods of low generation. After the introduction of hybrid system principles and analysis of possible financial subsidies, the individual hybrid system designs follow, each designed around a different focus point. The first simulated design is one aimed at as low initial investment as possible. This variant is also utilizing a virtual battery tariff, which allows, thanks to generated surplus energy, for to draw electricity from the grid at a reasonable discount. After the financial analysis, the system proves to be a relatively cheap variant, however, the potential investment return is not that promising. The second variant is intended as an imaginary middle ground between minimal and maximized approaches. it is composed of one fully covered roof area, with an adequate battery to support the modules. In addition, this system takes advantage of the sale of surplus generation on the market. Due to relatively high subsidy amount, combined with the surplus sale, the financial analysis of this system promises a return on investment during the first seven years of operation, with continually increasing positive numbers, when compared to the variant without a photovoltaic system. The third system is aimed at maximizing the potential gain, while staying under 10 kWp of installed power. Downside of this approach is a higher acquisition cost, but the estimated return on investment is significantly higher than that of the previous systems. In the last part, a multi-criteria analysis was performed to determine the most suitable system variant, in accordance to the requirements of the selected property owners. The results of this analysis showed the third system variant to be the most suitable, with a share of 47.6%.
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Design of a photovoltaic power system with battery storage for household purposes
Velasquez, Juan ; Maule, Petr (oponent) ; Vaněk, Jiří (vedoucí práce)
The aim of this bachelor’s thesis is to design a solar photovoltaic energy system on a family house disconnected from the electrical grid. Furthermore, the thesis includes detailed information that might help understand how photovoltaic systems can supply energy and which factors may affect the efficiency of these. Two programs were used to simulate how the design would perform during a whole year. There were also mentioned their advantages and disadvantages.
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Vliv energetické politiky na americko-saúdské vztahy během prezidentství Baracka Obamy 2009 - 2017: Možný konec zvláštního partnerství
Buriánek, Petr ; Bečka, Jan (vedoucí práce) ; El-Ahmadieh, Jakub (oponent)
Bakalářská práce pojednává o vlivu proměn energetické politiky zejména ve Spojených státech na americko-saúdské vztahy během let 2009-2017. Práce se pokusí metodou chronologické analýzy zhodnotit vzájemný vztah těchto změn s proměnami zmíněných bilaterálních vztahů a určit míru jejich kauzality. Důraz přitom bude dán na pohyby světových cen ropy. Práci lze rozdělit na 3 zkoumaná období. Prvním je pád cen ropy na pozadí ekonomické krize od roku 2008. Druhým období stabilních cen ropy a rozvoje alternativních zdrojů energie mezi lety 2009-2014. Posledním obdobím je pád cen ropy od poloviny roku 2014. V každém ze zmíněných období došlo k proměnám americko-saúdských vztahů, které úzce souvisí s energetickou bezpečností. Bližší analýzou pohybu světových cen ropy lze dokázat, že na rozdíl od ropné krize po roce 2008 odmítla Saúdská Arábie plnit tradiční roli flexibilního producenta v krizi od roku 2014. Vedle zásadní role, kterou ve změně saúdské pozice sehrálo chování ostatních producentů během předcházející krize, lze za hlavní důvod této změny hledat v rozvoji alternativní ropné těžby břidlic ve Spojených státech, kterou vnímala Saúdská Arábie jako hrozbu. Analýza dále ukázala, že ačkoliv se prezidentu Obamovi skutečně podařilo do značné míry omezit americkou závislost na importu hrubé ropy, nadále to...
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Off-grid street lamp design.
Hampl, Petr ; Karásek, David (oponent) ; Křenek, Ladislav (vedoucí práce)
The problem area of the project depicts the issue of actual transformation of energy resources and supply worldwide with the focus on renewable resources of energy. The stress is primarily laid on values of an object designated for public spaces. The author’s assignment was to design a lighting unit independent of an external power supply. The aim of the new design is to rethink the way in which technologies utilizing solar and wind power are commonly used, and to suggest a solution that brings new features, benefits and values for the user and society. Generally the author brings forward design that reflects actual global threats and opportunities. The result is a design of a street lamp that combines a wind turbine with a solar cell module in order to gain electrical energy which is stored in an accumulator and afterwards supplied to a luminaire. The lamp is designed with special consideration of aesthetics and ergonomics. The designed solution brings financial benefits in terms of saving the nonrenewable resources and possible money savings for the investor. Furthermore, the off-grid street lamp has a lower negative impact on the environment and demonstrates technologies utilizing solar and wind power in a friendly and unintrusive way.
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