Author of thesis: Ing. Tomáš Galík
Acad. year: 2020/2021
Supervisor: doc. Ing. Marek Baláš, Ph.D.
Reviewer: prof. Ing. Jiří Pospíšil, Ph.D.
Abstract:The Master’s thesis reviews the topic of hydrogen in within European and Czech energy industry. Hydrogen’s usage in gas industry, heating industry and power engineering may play a significant role in meeting European Union’s ambitious goals aiming to reduce emission production. This work identifies specifications of technologies used to produce, transport, and use of hydrogen and their impact on today’s energy systems and safety. The technical, economic, and political context is emphasized.
The technical part covers the topic of injecting hydrogen into natural gas and it’s impact on physico-chemical properties of gas. The work analyses concentrations of 0, 5, 10, 15, 20 and 25 molar percent of hydrogen in real composition of natural gas measured on a handover point of transition system. Furthermore, calculations for these mixtures have been done to determine a change in characteristics of a heat exchanger. The results show, that with higher concentrations of hydrogen, the power of heat exchanger rises, while the power of a burner decreases due to lower calorific value of gas mixture.
The last chapter follows up on a economical analysis of fuel and emission allowance costs for above-mentioned concentrations of hydrogen in gas mixture. Specific values of combined cycle gas plant Počerady from year 2019 were used for calculations. The results show, that in all of the three considered scenarios of emission allowance price predictions, replacing hydrogen with natural gas did not have a positive economic impact.
Hydrogen, fuel cell, electrolysis, hydrogen combustion, emission allowance
Date of defence
15.06.2021
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
V průběhu obhajoby byly položeny tyto doplňující otázky: Způsoby výroby vodíku. Byla v práci uvažována produkce NOx? Byla počítána teplota nechlazeného plamene? Jaká je výhřevnost vodíku? Proč bylo vyhodnoceno, že se spalování směsi zemního plynu a vodíku oproti spalování pouze zemního plynu nevyplatí? Otázky byly uspokojivě zodpovězeny.
Language of thesis
Czech
Faculty
Department
Study programme
Mechanical Engineering (M2I-P)
Field of study
Power Engineering (M-ENI)
Composition of Committee
doc. Ing. Zdeněk Skála, CSc. (předseda)
doc. Ing. Marek Baláš, Ph.D. (místopředseda)
Ing. Pavel Milčák, Ph.D. (člen)
Ing. Alojz Boko (člen)
Ing. Pavel Křemínský (člen)
Supervisor’s report
doc. Ing. Marek Baláš, Ph.D.
Grade proposed by supervisor: A
Reviewer’s report
prof. Ing. Jiří Pospíšil, Ph.D.
Grade proposed by reviewer: B