Sökning: "förnybar energi"

Visar resultat 21 - 25 av 63 avhandlingar innehållade orden förnybar energi.

  1. 21. Functional Materials for Perovskite Solar Cells

    Författare :Wei Zhang; Lars Kloo; Neil Robertson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; perovskite solar cell; photovoltaic device; lead-free light absorbers; hole-transport materials; coordination complexes; p-type dopants; organic salts; surface passivation.; Kemi; Chemistry;

    Sammanfattning : Energy plays a significant role in our daily lives, but most energy provided by fossil fuels causes serious environmental problems including air pollution, global warming, and ecological damage. In addition, it has been estimated that all of our fossil fuels will run out in 2088 and thus it is highly important to study and apply renewable energy sources. LÄS MER

  3. 22. Steam Turbine Optimisation for Solar Thermal Power Plant Operation

    Författare :James Spelling; Andrew Martin; Magnus Genrup; KTH; []
    Nyckelord :solar thermal power; steam-turbine; start-up; cool-down; dispatchability increase; koncentrerad solenergi; ångturbin; uppstart; nedkylning; ökad flexibilitet;

    Sammanfattning : The provision of a sustainable energy supply is one of the most important issues facing humanity at the current time, given the strong dependence of social and economic prosperity on the availability of affordable energy and the growing environmental concerns about its production. Solar thermal power has established itself as a viable source of renewable power, capable of generating electricity at some of the most economically attractive rates. LÄS MER

  4. 23. Energy-Water and Agriculture Nexus to Support the Sustainable Management of Shared Water Resources

    Författare :Youssef Almulla; Viktoria Martin; Mark Howells; Francesco Gardumi; Vignesh Sridharan; Mikael Höök; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; shared water management; WEF nexus; agriculture; water and energy systems; hydropower; climate change; groundwater.; Delad vattenförvaltning; WEF-nexus; jordbruk; vatten och energisystem; vattenkraft; klimatförändring; grundvatten.; إدارة المياه المشتركة ؛ الترابط بين الموارد المائية و الطاقة والغذاء؛ أنظمة الطاقة؛ الطاقة الكهرومائية؛ تغير المناخ؛ المياه الجوفية.; Energiteknik; Energy Technology;

    Sammanfattning : Throughout history, major rivers and shared water bodies have allowed civilizations to flourish, and the effective management of shared water bodies has always been a priority for societies and nations. Today, about 40% of the world’s population lives in proximity to the 286 transboundary river and lake basins that supply 60% of the world’s freshwater flows and make up about half of the Earth’s land area. LÄS MER

  5. 24. Techno-economic analysis and optimization of electrochemical energy storage solutions

    Författare :Guido Lorenzi; Andrew R. Martin; Carlos Silva; Massimo Santarelli; Kari Alanne; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Energy Storage; Battery Energy Storage; Lithium-ion Batteries; Vanadium Flow Batteries; Power-to-Gas; Electrolysis; Biogas Upgrading; Armazenamento de Energia Elétrica; Armazenamento de Energia em Baterias; Baterias de Iões de Lítio; Baterias de Fluxo de Vanádio; Power-to-Gas; Eletrólise; Upgrading de Biogás; Elenergilagring; batterilagring; litiumjonbatterier; vanadinflödesbatterier; elkraft-till-gas; elektrolys; biogasuppgradering; Energy Technology; Energiteknik;

    Sammanfattning : The need to integrate the rapidly growing share of variable renewable energy sources in the power sector requires solutions that are capable of mitigating the intermittent nature of these sources. They are expected to constitute the backbone of the electricity generation system in the coming years in order to reach ambitious goals in terms of energy security and reduction of environmental impact. LÄS MER

  7. 25. Impact of High Levels of Variable Renewable Energy on Power System Generation Adequacy : Methods for analyzing and ensuring the generation adequacy of modern, multi-area power systems

    Författare :Egill Tomasson; Lennart Söder; Dirk Van Hertem; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Generation adequacy; reliability; renewable energy; Monte Carlo simulation; electricity markets; optimization; mathematical programming; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The generation adequacy of electricity supply has been an ongoing concern since the restructuring of the industry. Ensuring generation adequacy was a rather straightforward task in the era of natural monopolies. LÄS MER