Přístupnostní navigace
E-application
Search Search Close
Master's Thesis
Author of thesis: Ing. Jan Zavadil
Acad. year: 2019/2020
Supervisor: prof. Ing. Jiří Pospíšil, Ph.D.
Reviewer: Martin Pešek (EGÚ Brno, a. s. )
The diploma thesis is focusing on the seasonal energy storage in synthetic fuels and the Power to Gas system (P2G). The P2G enables the conversion of electrical energy in times of electricity surplus, for example by using the surplus from renewable energy sources to produce synthetic gas, particulary hydrogen and synthetic methane. The main focus is on the technical and economic assessment of P2G of the Gazela natural gas pipeline. Furthermore, it identifies the limits of production, transportation, and storage capacities of these synthetic gases. The technical analysis assumes the injection of hydrogen of a certain molar concentration, according to the four proposed scenarios, into the natural gas transmission system in the Gazela pipeline. The results have showen that an increase in the molar fraction of hydrogen in natural gas will cause problems in gas transport and will lead to an increase in the pressure losses, an increase in flow rate, and a decrease in the storage capacity of the pipeline. The economic analysis examines the use of P2G technology in Czech conditions. It demonstrates the amount of production costs for the production of 1 MWh of synthetic gas depending on the electricity price and the operating time of the production facility. The sensitivity analysis has shown that neither hydrogen nor synthetic methane is competitive next to cheap natural gas unless measures like an increased price of emission allowances or a carbon tax are taken.
Hydrogen, methan, Power-to-Gas, Gazela pipeline, fuel cell, electrolysis, seasonal accumulation
Date of defence
20.07.2020
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Student odpověděl na všechny otázky oponenta a vyjádřil se k jeho poznámkám. Dále odpovídal na otázky komise: V Německu je možno přimíchávat vodík do plynárenské soustavy, proč to v ČR nelze? Je problém s koncentrací vodíku okolo 5 %? Co je to vyšší permeace? U syntetického metanu přidáváte CO2, jedná se o náklad, nebo je to zisk? Co je konstantního, když měníte koncentraci vodíku? Čím je způsobena eroze v potrubí? Jaký je tlak v potrubí? Jak by se počítaly u plynovodu tlakové ztráty? Co znamená zkratka LCOE? Která technologie má nejnižší LCOE? Proč jste se věnoval tomuto tématu? Myslíte si, že podobná zařízení je možno realizovat v rámci ČR? Komise došla ke shodě v hodnocení obhajoby výborně, A.
Language of thesis
Czech
Faculty
Fakulta strojního inženýrství
Department
Energy Institute
Study programme
Mechanical Engineering (M2I-P)
Field of study
Power Engineering (M-ENI)
Composition of Committee
prof. Ing. Jiří Pospíšil, Ph.D. (předseda) doc. Ing. Marek Baláš, Ph.D. (místopředseda) Ing. Pavel Milčák, Ph.D. (člen) Ing. Milan Kořista, Ph.D. (člen) Ing. Tomáš Caha (člen)
Supervisor’s reportprof. Ing. Jiří Pospíšil, Ph.D.
Grade proposed by supervisor: A
Reviewer’s reportMartin Pešek (EGÚ Brno, a. s. )
Grade proposed by reviewer: B
Responsibility: Mgr. et Mgr. Hana Odstrčilová