National Repository of Grey Literature 173 records found  beginprevious164 - 173  jump to record: Search took 0.00 seconds. 
Fuel cells in personal transport
Říha, Stanislav ; Blaťák, Ondřej (referee) ; Zháňal, Lubor (advisor)
This thesis is oriented to historical evolution of fuel cell, his total analysis, description of single disadvantage and advantage with which fuel cells battle. An other reason for urgency of using alternative fuel, brief description of car market and possible guess of fuel cell's future in personal transport are involved in an other part of this thesis. The end of the thesis deal with cars of fuel cells split in parts according to single car companies.
A fuel cell, as an alternative source of electricity
Kürthy, Marián ; Šen, Hugo (referee) ; Pospíšil, Jiří (advisor)
The work deals with fuel cell technology, the principle of fuel cells and their division. Also there is presented an option of natural gas utilization as a fuel for fuel cells in this work. In the end of this work two scenarios of fuel cell usage in microcogeneration are introduced and there is also a technical economic evaluation of fuel cell microcogeneration unit used in these scenarios.
The present state and development trends of passenger car hybrids engines.
Štěnička, Petr ; Píštěk, Václav (referee) ; Rauscher, Jaroslav (advisor)
This bachelor thesis treats of the present state and development trends of hybrid propulsion of passenger cars. It contains brief historical summary of hybrid cars, their general partition, its main components and a summary of types produced nowadays.The whole thesis is focused on main principles of this propulsion and there is also a comparsion of advantages and disadvantages of main constructional solutions.
Two-fuel systems of CI engines
Malinský, Marek ; Svída, David (referee) ; Dundálek, Radim (advisor)
The aim of this project is to point out the significance of binary-fuel compression-ignition engines and alternative fuels. It introduces comparison of bio fuels and its influence on the function of the engine, and ecological load. It especially raises bio oil as an alternative fuel for compression-ignition engines. Advantages and disadvantages of bio fuels, most common defects and their consequences, and development trends are also mentioned.
Synthesis of Pt/C Fuel Cell Electrocatalysts: Residual Content of Chlorine and Activity in Oxygen Reduction
Kaluža, Luděk ; Larsen, M.J. ; Morales, I.J. ; Cavaliere, S. ; Jones, D.J. ; Roziere, J. ; Gulková, Daniela ; Odgaard, M.
Hydrogen and fuel cells represent a possible solution of modern transportation. Carbon-supported Pt is conventional catalyst in proton-exchange membrane fuel cells. The aim of this work is to elaborate on preparation procedure for deposition of Pt onto the moderate-surface-area carbon support with emphasis on residual analysis of Cl content, electrochemically active surface area and activity towards the oxygen reduction reaction.
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Highly Loaded Carbon Black Supported Platinum Catalysts for Fuel Batteries
Kaluža, Luděk ; Zdražil, Miroslav ; Gulková, Daniela
Carbon supported Pt represents conventional catalyst in polymer electrolyte membrane fuel battery (PEM fuel cell). The aim of this work was to elucidate on the methods of Pt deposition on carbon black to achieve high loadings of Pt of about 60 wt.% in highly dispersed form.
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Experimental equipment for low-temperature hydrogen fuel cell research
Němec, Tomáš ; Maršík, F.
Experimental equipment for low-temperature hydrogen fuel cell research is described. The devices allow to perform degradation testing of polymer membranes and catalytic layers, measure their physical properties, and evaluate their structural changes after degradation test.
Modelling of water transport in the polymer electrolyte membrane of a fuel cell
Šimek, M. ; Němec, Tomáš ; Maršík, František
A brief review of recent literature on proton exchange membrane fuel cell (PEMFC) modelling is presented and the governing equations of the transport processes in the proton exchange membrane are presented. Consequently, the model of water transport in the membrane electrode assembly of a fuel cell in commercial software FLUENT is investigated. The aim of this work is to test the possibilities of the PEMFC modelling using FLUENT. Special attention is given to the water management and the properties of the fuel cell membrane.of four binary mixtures, i.e. diethylether - nitrogen, propane - carbon dioxide, isobutane - carbon dioxide, and chlorodifluoromethane - carbon dioxide. The predictions of the classical nucleation theory show very good agreement with the measured nucleation rates.
Protonově vodivé fosfokřemičitanové membrány
Mika, J. ; Masinová, M. ; Švarcová, S. ; Paidar, M. ; Bouzek, K. ; Klápště, Břetislav ; Vondrák, Jiří
Hybride inorganic-organic membranes with high proton conductivity were prepared and studied. These membranes were used as solid electrolytes in hydrogen chemical sensor and in the model fuel cell.

National Repository of Grey Literature : 173 records found   beginprevious164 - 173  jump to record:
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