Výzkum akumulace energie získané z obnovitelných zdrojů

Abstract

This dissertation deals with hydrogen technology used at VSB - Technical University of Ostrava. More specifically, it is an experimental laboratory research on accumulation of electrical energy. The system Laboratory of Hydrogen Technologies enables the conversion of electric power produced by photovoltaic power plant (FVE) into chemical energy in the form of hydrogen, and reverse conversion into electrical energy with the help of low-temperature fuel cell. The dissertation summarizes the results of research carried out by experimental measurements on the hydrogen system. It also analyses the results of the fuel cell operation testing. In the first part of the dissertation, the author analyses some aspects of two intermittent renewable energy sources, namely wind power plants and photovoltaic power plants, and an overview of accumulation systems with a description of their parameters. The following chapter deals with the analysis of hydrogen technology in terms of electrolysers and water electrolysis as a process, where the end product is hydrogen. It also describes fuel cell technology, basic distribution of fuel cells, their advantages and disadvantages, and basic principles of operation. The theoretical foundations are followed by a chapter in which the author summarizes the results from implemented research with experimental measurements of hydrogen in the Laboratory of Fuel Cells. The fundamental part of this work is to calculate the efficiency of devices in the hydrogen system, operated in the Laboratory of Fuel Cells VSB - TUO. Following calculations refer to the overall efficiency of the hydrogen system. Further experimental measures are undertaken in order to increase the hydrogen system efficiency The last part describes the topic of low-temperature fuel cell with a proton membrane with both contact and non-contact temperature measurement. The measurement observed warming curve of the fuel cell Nexa Ballard Power System at a variable load in a hydrogen fuel cell system laboratory VSB - TUO. The main benefits of the dissertation are summarized in the corresponding chapters, which assess efficiency of the hydrogen system and thermography applications on the low-pressure fuel cell Nexa Ballard Power System. All data for the evaluation experiments were obtained from experimental measurements in research Laboratory of Fuel Cells VSB - TUO.