Temat: fuel cell efficiency - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of the current state and development of direct carbon fuel cells with an alkaline electrolyte
Analiza obecnego stanu rozwoju technologii węglowych ogniw paliwowych z elektrolitem alkalicznym
Autorzy:: Kacprzak, A.
Powiązania:: https://bibliotekanauki.pl/articles/283350.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:: direct carbon fuel cell
alkaline electrolyte
high efficiency energy technology
fossil carbon
biochar
węglowe ogniwo paliwowe
elektrolit alkaliczny
wysokosprawna technologia energetyczna
węgiel kopalny
Opis:: Among the numerous modern, high-efficiency energy technologies allowing for the conversion of chemical energy of coal into electricity and heat, the Direct Carbon Fuel Cells (DCFC) deserve special attention. These are devices that allow, as the only one among all types of fuel cells, to directly convert the chemical energy contained in solid fuel (coal) into electricity. In addition, they are characterized by high efficiency and low emission of pollutants. The paper reviews and discusses previous research and development works, both around the world and in Poland, into the technology of direct carbon fuel cells with an alkaline (hydroxide) electrolyte.
Wśród wielu nowoczesnych, wysokosprawnych technologii energetycznych pozwalających na przetwarzanie energii chemicznej węgla w energię elektryczną i ciepło na szczególną uwagę zasługują węglowe ogniwa paliwowe (ang. Direct Carbon Fuel Cells – DCFC). Są to urządzenia, które umożliwiają, jako jedyne spośród wszystkich typów ogniw paliwowych, bezpośrednią konwersję energii chemicznej zawartej w paliwie stałym (węglu) w energię elektryczną. Ponadto charakteryzują się one wysoką sprawnością i niską emisją zanieczyszczeń. W artykule dokonano przeglądu i omówienia dotychczasowych prac badawczo-rozwojowych, prowadzonych zarówno na świecie, jak i w Polsce, nad technologią węglowych ogniw paliwowych z elektrolitem alkalicznym (wodorotlenkowym).
Źródło:: Polityka Energetyczna; 2018, 21, 4; 87-102
1429-6675
Pojawia się w:: Polityka Energetyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Technical and Economical Evaluation of Proton Exchange Merobrane (PEM) Fuel Cell for Commercial Applications
Autorzy:: Katyara, S.
Iżykowski, J
Staszewski, Ł
Shaikh, F.
Powiązania:: https://bibliotekanauki.pl/articles/410535.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: Proton Exchange Membrane
PEM
Fuel Cell
DC/DC boost converter
Distributed Generation
DG
polarization curve
efficiency
Opis:: The green energy sources are the utmost needs of today’s world where the reserves of fossil fuel are depleting day by day. The Distributed Generation (DG) has become integral part of power system at commercial level. The most efficient among all DGs and Renewable Energy Sources (RES) is the Fuel Cell (FC) power generation. The fuel cell invariably converts chemical energy directly into electricity. The Fuel cells have normally 60 to 70% efficiency at working conditions. The polarization curve of fuel cell plays important role in improving its efficiency. This research presents the mathematical and Simulink modeling 6 kW, 45 V_dc of Proton Exchange Membrane (PEM) fuel cell. The input thermodynamic parameters of fuel cell are varied and their effects on the output electrical variable are observed. The DC/DC boost converter is used to step up the voltage of fuel cell to 100 V_dc at commercial usable level. A new mathematical equation is presented to improve the efficiency of fuel. The mathematical results are then varied through Simulink results.
Źródło:: Present Problems of Power System Control; 2017, 8; 41-49
2084-2201
Pojawia się w:: Present Problems of Power System Control
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effectiveness of current technology in GHG reduction – A literature survey
Autorzy:: Klakeel, T.
Anantharaman, M.
Islam, R.
Garaniya, V.
Powiązania:: https://bibliotekanauki.pl/articles/24201381.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: effectiveness evaluation
greenhouse gas
literature review
marine environment
IMO guidelines
hydrogen fuel cell
heavy fuel oil
energy efficiency design index
Opis:: In 2018 during the 72nd session of the Maritime Environmental Protection Committee (MEPC) IMO adopted its initial strategy for the reduction of greenhouse gas emissions (GHG) from the ships to meet the Paris Agreement Goals, 2015. This is considered as a major milestone in formulizing a clear strategy by IMO towards its objective of reducing the global GHG emissions from the ships. The strategy had two primary objectives: the first was to decrease total annual GHG emissions by at least 50% by 2050 compared to 2008 levels. The second objective was to promote the phasing out of GHG emissions entirely. In 2020, the International Maritime Organization (IMO) conducted a study which revealed that greenhouse gas (GHG) emissions from shipping had increased by 9.6%. The rise in global maritime trade was identified as the main factor behind this increase. IMO's 2020 study also concluded that reducing GHG emissions by focusing only on energy-saving technologies and ship speed reduction would not be enough to meet the IMO's 2050 GHG reduction target. Therefore, greater attention needs to be given to the use of low-carbon alternative fuels. To understand the effectiveness of currently available technologies in reducing GHG emissions from ships, a literature survey was conducted in this study. The survey examined a range of related articles published between 2018 and 2022. This study aimed to identify the current stage and the quantity of literature available on various technologies and, more importantly, serve as a decision-making support tool for selecting a technology under specific circumstances in a quantitative manner. The technologies were divided into four groups: those that utilize fossil fuels, those that use renewable energy, those that use fuel cells, and those that use low-carbon or alternative fuels. The literature survey was conducted using Web of Science (WoS) and Google Scholar. The results of this study will also help to identify clear research gaps in comparing the effectiveness of various available technologies to reduce GHG emissions. Ultimately, the aim is to develop a comprehensive strategy that can be used to reduce GHG emissions from shipping and contribute to the global fight against climate change.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 171--176
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Characteristics of fuel cells under static and dynamic conditions
Autorzy:: Szwajca, Filip
Berger, Andrew W.
Spalletta, Robert
Pielecha, Ireneusz
Powiązania:: https://bibliotekanauki.pl/articles/32101706.pdf
Data publikacji:: 2022-12-28
Wydawca:: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:: fuel cell stack
fuel cell module
static and dynamic characteristics
fuel cell efficiency
Opis:: Modern internal combustion powertrains are the main source of propulsion for on-road and non-road vehicles. However, they are increasingly being replaced by electric or fuel cell-equipped alternative propulsion systems. The article presents a study of fuel cell characteristics operating under both static and dynamic conditions, with a 1.2 kW fuel cell set with a voltage converter and lead-acid batteries. In the conducted tests, the fuel cell stack's maximum efficiency reached 65%. Load tests (static and dynamic) have indicated higher fuel cell efficiencies when using hybrid operation with a DC/DC converter and battery.
Źródło:: Rail Vehicles/Pojazdy Szynowe; 2022, 3-4; 44-52
0138-0370
2719-9630
Pojawia się w:: Rail Vehicles/Pojazdy Szynowe
Dostawca treści:: Biblioteka Nauki

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