- document
-
Lock, Niels (author)To utilize electronic power converters for water electrolysis in industrial electrical networks, reliable testing methods are required to ensure safe control operation as malfunctions can instigate hydrogen explosion and fierce electrical hazards. In this thesis, Digital Twin modeling via OPAL-RT software and hardware is compared to Simulink and...master thesis 2023
- document
-
Haverlag, Hein (author)In this research project, multiphase behaviour in zero gap alkaline water electrolyzers is investigated, focusing on the influence of various parameters including current density, electrode-wall distance and electrode height. This involves a cell containing a vertical electrode pair separated by a membrane submerged in an electrolyte that has a...master thesis 2023
- document
-
de Haan, Stijn (author)In this thesis, both a 10 MW Alkaline Electrolyser (AE) and a 10 MW Proton-Exchange Membrane (PEM) electrolyser system are evaluated through a comprehensive techno-economic feasibility study, spanning a 25-year operational lifespan. The systems are designed to serve a dual function, producing green hydrogen at 350 bar for utilisation at a...master thesis 2023
- document
-
Murugesan, Vikki (author)Enhancing the efficiency of industrial water electrolysis for hydrogen production is vital for the energy transition. In Alkaline Water Electrolysis (AWE), hydrogen is produced at the cathode, and the bubbles are formed when the local hydrogen concentration exceeds the solubility limit. It is important to understand the exact local conditions...master thesis 2023
- document
-
Grevet, Camiel (author)The utilization of water electrolysis for hydrogen production is expected to increase significantly in the upcoming decades. Modular system design offers great advantages for emerging markets, whilst providing the necessary flexibility in capacity that intermittent renewable energy sources require. Literature research reveals little information...master thesis 2023
- document
-
Deiters, Gilles (author)In an effort to make water electrolysis more efficient and simple, flow-through electrolyzers eliminate the need for a gas-separating membrane between the electrodes. However, replacing the membrane with a forced flow field brings new challenges and considerations. In this research, the design of a flow-through electrolyzer is optimized for...master thesis 2023
- document
-
Manna, Kris (author)This master thesis introduces a recently surfaced method to produce hydrogen and oxygen using alkaline water electrolysis. A hydrophilic porous diaphragm is used that can feed electrolyte laterally to two porous electrodes that are placed against it. Consequently, hydrogen and oxygen are produced directly at the electrodes without any bubble...master thesis 2023
- document
-
PAUL, Ivana Mariam Paul (author)The development of an efficient and sustainable transportation system is crucial for the effective functioning of economies. Concrete, a widely used material for road construction, poses significant environmental challenges. A sustainable alternative is to use alkali-activated concrete (AAC) for road construction. However, the aggregates used in...master thesis 2023
- document
-
Pektaş, Mehmet (author)A water electrolyzer is an electrochemical device that produces hydrogen and oxygen from water via electricity. A sustainable way of producing hydrogen with renewable electricity, also known as green hydrogen, could enable its use in decarbonisation of sectors that depend on fossil fuels. However, to scale up the production of green hydrogen,...master thesis 2023
- document
-
van Haersma Buma, Bernhard N.D. (author), Peretto, Marco (author), Matar, Ziad M. (author), van de Kaa, G. (author)This paper focuses on the battle for a dominant design for renewable hydrogen electrolysis in which the designs, alkaline and proton exchange membrane, compete for dominance. First, a literature review is performed to determine the most relevant factors that influence technology dominance. Following that, a Best Worst Method analysis is...journal article 2023
- document
-
Bleeker, J.J. (author), Kahn, A.P. (author), Baumgartner, L.M. (author), Grozema, F.C. (author), Vermaas, D.A. (author), Jager, W.F. (author)Spatiotemporal pH imaging using fluorescence lifetime imaging microscopy (FLIM) is an excellent technique for investigating dynamic (electro)chemical processes. However, probes that are responsive at high pH values are not available. Here, we describe the development and application of dedicated pH probes based on the 1-methyl-7-amino...journal article 2023
- document
-
Flipkens, Gunter (author), Fuhr, Michael (author), Fiers, Géraldine (author), Meysman, F.J.R. (author), Town, Raewyn M. (author), Blust, Ronny (author)Carbon dioxide removal (CDR) technologies at a gigaton scale need to be developed and implemented within the next decades to keep global warming below 1.5 °C. Coastal enhanced silicate weathering is one of the proposed CDR techniques that aims to accelerate the natural process of CO<sub>2</sub>-sequestration during marine chemical weathering...journal article 2023
- document
-
Oikonomidis, Silvestros (author), Ramdin, M. (author), Moultos, O. (author), Bos, Albert (author), Vlugt, T.J.H. (author), Rahbari, A. (author)Due to the intermittency of renewable energy sources, alkaline water electrolyzers are typically operated at partial load compared to the nominal design value. It is well-known that gas crossover is dominant at low current densities leading to higher anodic hydrogen content and higher cathodic oxygen content in the separator tanks. High...journal article 2023
- document
-
Martinez Lopez, V.A. (author), Ziar, H. (author), Zeman, M. (author), Isabella, O. (author)The development of clean hydrogen and photovoltaic (PV) systems is lagging behind the goals set in the Net Zero Emissions scenario of the International Energy Agency. For this reason, efficient hydrogen production systems powered from renewable energy need to be deployed faster. This work presents an optimization procedure for a stand-alone,...journal article 2023
- document
-
Schutter, Miriam (author), ter Hofstede, R. (author), Bloemberg, Joost (author), Elzinga, Jesper (author), van Koningsveld, M. (author), Osinga, Ronald (author)Acropora palmata is one of the major reef-building coral species in the Caribbean. The species has suffered drastic declines in abundance and sexual recruitment over the past decades. One method for active rehabilitation of A. palmata reefs is by assisting the production of sexual recruits under controlled lab conditions. Within this study,...journal article 2023
- document
-
Bhatia, Ranjeev (author)This study aims to explore hydrogen production via alkaline water electrolysis using municipal effluent. The experiments were conducted in a flow cell electrolyzer using carbon fibre and Ni-foam as the anode, with another Ni-foam electrode employed as the cathode for all experiments. Synthetically prepared effluent and real municipal effluent...master thesis 2022
- document
-
OIKONOMIDIS, SILVESTROS (author)Climate change due to the extensive use of fossil fuels has led to the deployment of alternative green ones, such as hydrogen. Green hydrogen is produced by renewable electricity and is CO<sub>2</sub>-free. This thesis focuses on the production of hydrogen by implementing alkaline water electrolysis as the core technology. <br/>Due to the...master thesis 2022
- document
-
MERA, KRISTIAN (author)The unprecedented increase in mean ambient temperature due to immoderate CO2 emissions has shifted the energy policy towards the replacement of fossil fuels with renewable energy sources. Nevertheless, the intermittency of these technologies renders them unsuitable for reliable energy supply. A prominent solution is the utilization of renewable...master thesis 2022
- document
-
Cinek, Yavuz (author)The energy transition is one of the major challenges of the 21st century, impacting the way energy is generated, conserved and consumed. Energy generation becomes more and more decentralised, intermittency and fluctuations suddenly are becoming topics of interest within day-to-day life and energy system operators are facing many new obstacles...master thesis 2022
- document
- Blum, Jouke (author) master thesis 2022