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Swart, Mik (author)Climate change is a pressing issue. Hydrogen aircraft are an excellent alternative to current kerosene aircraft, and appear to be the most viable long-term solution for net-zero flight. One of the main challenges for hydrogen aircraft is to sustain a low boil-off rate. This research explores the solution of active cooling of the LH2 mixture in...master thesis 2024
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de Vries, Wytze (author)This design report discusses the embodiment design of a more efficient frying pan for gas powered stoves in commercial kitchens, to see if a potential market entry is feasible, viable and desirable. Conventional pans have a thermal efficiency of roughly 25%. This means that only 25% of the heat coming from the combusted gas is used for cooking....master thesis 2023
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Rochedy, M. (author), Klosek, V. (author), Riglet-Martial, C. (author), Onofri-Marroncle, C. (author), Drouan, D. (author), Reyes, D. (author), Bienvenu, P. (author), Roure, I. (author), Cabié, M. (author)The interactions of iodine and caesium in UO<sub>2</sub> have been investigated. For this purpose, implanted UO<sub>2</sub> samples were thermally treated (4h at 900°C or 1h at 1200°C) under controlled atmosphere (0.03% H<sub>2</sub>O/H<sub>2</sub>) and then characterized by several experimental techniques for their structural and chemical...journal article 2023
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Tosolin, A. (author), Vigier, J. F. (author), Mastromarino, S. (author), Konings, R. J.M. (author), Luzzi, L. (author), Beneš, O. (author)Phase equilibria in the ThF<sub>4</sub>-PuF<sub>3</sub> system were measured by differential scanning calorimetry. Samples were encapsulated to prevent leakage during the measurements and to prevent fluoride contamination of the instrument. Formation of intermediate compounds and solid solutions was investigated by X-ray diffraction. A...journal article 2023
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GAUTAM, DIVYANSH (author)At present, there is a worldwide awareness and concern about how global warming could impact daily lives and the need to switch to renewable sources of energy. Commercially, various green energy technologies such as hydro, wind, solar, nuclear fission, etc. are being used to harness their stored energy and convert it into electricity. However,...master thesis 2022
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Mulder, Bas (author)With variable renewable energy on the rise, large-scale energy storage is needed to assure grid stability. Thermal energy storage (TES) is a new player in the large-scale energy storage landscape, but might prove a cheap, safe and reliable option, with low permitting barriers. TES is not geographically limited, generally compact and has a low...master thesis 2022
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Fränkel, Oseï (author)Economic engineering models individual agents as inertia elements and can be viewed as a microeconomic theory based on analogs with classical mechanics. In this thesis the economic engineering concept of modeling individual agents is used to model economic systems consisting of many agents, e.g. an entire country. This is done using classical...master thesis 2022
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Seyed Salehi, H. (author)In this thesis, thermodynamic and structural properties of different deep eutectic solvent (DESs), and mixtures of DESs with gases or water, were computed using the state-of-the-art molecular simulations and computational methods. Discussions were presented on the influence of the intermolecular interactions and liquid structure of DESs on...doctoral thesis 2022
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van Weert, Camille (author)The research presented regards the study of D4 using experimental speed of sound measurements to obtain the ideal gas isobaric heat capacity. The isobaric heat capacity is not a useful property for the generation of equations of state, in the presented research it is used for the validation of thermodynamic models. However, due to the observed...master thesis 2022
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Ou, X. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)Nucleation is the re-arrangement of a small number of atoms in the structure of a material leading to a new phase. According to the classical nucleation theory, a nucleus will grow if there is an energetically favourable balance between the stability of the newly formed structure and the energy costs associated to the formation of strains and...journal article 2022
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Subramanian, N. (author), Nielsen Lammers, Laura (author)Crystalline hydrates of swelling clay minerals (smectites) exhibit a strong coupling between their ion exchange and hydration/dehydration reactions. The uptake or removal of water from smectite interlayers as a result of a change in the environmental conditions also leads to the partitioning of cations. Three factors, the solid ion...journal article 2022
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Golchin, A. (author), Vardon, P.J. (author), Hicks, M.A. (author)The formulation of a new thermo-mechanical constitutive model consistent with the principles of thermodynamics is presented. The model is capable of predicting the rate-independent thermo-mechanical behavior of fine-grained soils. The constitutive equations are derived by defining only a Gibbs-type free energy and a dissipation potential, in...journal article 2022
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Xu, K. (author), Liu, J. D. (author), van der Zwaag, S. (author), Xu, W. (author), Li, J. G. (author)A universal numerical model based on the particle size distribution (PSD) approach has been developed for the simulation of precipitation kinetics in multicomponent alloys during isothermal ageing. Nucleation was implemented utilizing the classical nucleation theory (CNT). Growth and coarsening were modeled by a single growth kinetics...journal article 2022
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van der Vries, André (author)The global warming and increase in energy use demands the industry to come up with ideas to lower the CO<sub>2</sub> production and save valuable energy. Organic Rankine cycles have a great potential as low grade heat can be converted into electrical energy. In the last ten years, research in this particular field has increased together with the...master thesis 2021
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Bhangale, J.A. (author)The work done for this thesis is related to fatigue analysis of various material types used in the wind turbine blades. For the analysis, a framework from the thermodynamics of irreversible processes with internal variables and Continuum Damage Mechanics (CDM) is used. Thermodynamic principles provide a generic framework that is valid for the...doctoral thesis 2021
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Sun, Xiaoliang (author), Zhou, Guanggang (author), Liu, Z. (author), Zhu, Jianwei (author), Guo, Fengzhi (author), Chen, Junqing (author), He, Wenhao (author), Wang, Ning (author), Zhao, Ge (author), Lu, Guiwu (author)The controllability of mining is a key factor affecting the commercial application of methane hydrates, and the addition of chemical additives can significantly accelerate the mining process. However, the effect of additive concentration on hydrate decomposition is not yet well understood. In this study, we systematically investigate the...journal article 2021
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Kerckhoffs, Lennart (author)Flash calculations are used for the dynamic simulation of vapor-liquid phase equilibria (VLE) in many chemical processes. When used to predict the composition of mixtures in VLE, the repeated applicatino of these flash calculations, particularly in dynamic cases can cause small inaccuracies to cascade. One way to prevent this, is to have strong...master thesis 2020
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Dijkshoorn, Dominic (author)Organic Rankine Cycle (ORC) Power Plants can be of greatimportance in the energy transition as they are suitable for converting wasteheat to power and can utilize renewable energy for their operation. To improvethe efficiency of ORC Power Plants, the physical phenomena inside thesemachines must be understood....master thesis 2020
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Ng, Stanley (author)Increased public awareness and political concern about the environmental footprint of aviation have created very ambitious goals to reduce emissions in the future. This objective of this research project is to develop a multidisciplinary turbofan engine design and sizing tool for conceptual engine design. The tool will be used in a parametric...master thesis 2020
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Petitfrere, Martin (author), Nichita, Dan Vladimir (author), Voskov, D.V. (author), Zaydullin, Rustem (author), Bogdanov, Igor (author)Several compositional reservoir simulators based on equations of state (EoS) have been designed. Yet, few of them can deal with thermal processes such as steam injection and no fully compositional thermal simulation of the steam injection process has been proposed with extra-heavy oils yet. Those simulations appear essential and will offer...journal article 2020
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