Searched for: subject%3A%22gas%22
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Puiman, L. (author)
One of the major challenges mankind faces nowadays is combating climate change. A substantial fraction of greenhouse gases are released by industrial processes, as steelmaking, (oil)refinery and waste processing. Emissions from these processes can partly be prevented with a recently developed technology called gas fermentation. Within this...
doctoral thesis 2024
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Bashandy, Vincent (author)
The current global environmental crisis has resulted in increased efforts towards more efficient and sustainable industrial processes. High-temperature heat between 150 ◦C & 400 ◦C accounts for a major part of the energy demand in industrial processes. At the same time, large quantities of waste heat are unutilised at temperatures up to 200 ...
master thesis 2024
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van Eil, Tijn (author)
Decarbonization is an important step to achieve the goals set by the Paris Agreement. Greenhouse gas emissions should be reduced to zero, and therefore, the reliability of fossil fuels should be reduced. This causes a shift of interest towards more renewable solutions. However, the intermittent nature<br/>of renewable energy sources such as...
master thesis 2024
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Elhorst, Wytze (author)
The Multi-Objective Dial-a-Ride Problem (DARP) poses significant challenges in the field of transportation optimization, requiring the simultaneous optimization of conflicting objectives such as travel costs, emission, and customer ride times. In this research, we analyse two distinct approaches for tackling the Multi-Objective DARP: Mixed...
master thesis 2024
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Jankovic, T.J. (author), Straathof, Adrie J.J. (author), Kiss, A.A. (author)
Isobutanol is a highly attractive renewable alternative to conventional fossil fuels, with superior fuel properties as compared to ethanol and 1-butanol. Even though the isobutanol production by fermentation has significant potential, complex downstream processing is limiting the wide-spreading of this technology. Accordingly, this original...
journal article 2024
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Shahverdi, Amir Farbod (author), Mostafavi, F. (author), Roodkoly, Sogand Haghighat (author), Zomorodian, Zahra Sadat (author), Homayouni, Hoda (author)
As the current environmental crisis and depletion of our energy resources are pushing the Architecture, Engineering, and Construction (AEC) industry toward the design and construction of High-Performance (HP) buildings, new organizational and technological methods of practice, such as Integrated Design Process (IDP) and Building Information...
journal article 2024
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Guardone, Alberto (author), Colonna, Piero (author), Pini, M. (author), Spinelli, Andrea (author)
The gas dynamics of single-phase nonreacting fluids whose thermodynamic states are close to vapor-liquid saturation, close to the vapor-liquid critical point, or in supercritical conditions differs quantitatively and qualitatively from the textbook gas dynamics of dilute, ideal gases. Due to nonideal fluid thermodynamic properties,...
journal article 2024
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Della Pia, A. (author), Michelis, Theodorus (author), Chiatto, Matteo (author), Kotsonis, M. (author), De Luca, Luigi (author)
This study reports the first time-resolved particle image velocimetry characterization of a planar two-phase mixing layer flow, whose velocity field is measured simultaneously in gas and liquid streams. Two parallel air and water flows meet downstream of a splitter plate, giving rise to an initially spanwise invariant configuration. The aim...
journal article 2024
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Cai, Jitao (author), Wu, Jiansong (author), Yuan, S. (author), Reniers, G.L.L.M.E. (author), Bai, Yiping (author)
Focusing on the effective configuration of emergency response systems in utility tunnels, this study proposes an innovative approach to optimize existing emergency response systems based on a consequence rapid prediction model and genetic algorithm. In the proposed approach, the interactions between different emergency response components are...
journal article 2024
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Butt, E.N. (author), Padding, J.T. (author), Hartkamp, Remco (author)
The local conditions inside a gas diffusion electrode (GDE) pore, especially in the electrical double layer (EDL) region, influence the charge transfer reactions and the selectivity of desired CO<sub>2</sub>ER products. Most GDE computational models ignore the EDL or are limited in their applicability at high potentials. In this work, we...
journal article 2024
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Başkaya, A.O. (author), Capriati, Michele (author), Turchi, Alessandro (author), Magin, Thierry (author), Hickel, S. (author)
The efficacy of immersed boundary (IB) methods with adaptive mesh refinement (AMR) techniques is assessed in the context of atmospheric entry applications, including effects of chemical nonequilibrium (CNE) and gas–surface interactions (GSI). We scrutinize a conservative cut-cell IB method and two non-conservative IB methods, comparing their...
journal article 2024
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Mier Escurra, C. (author), Mor, A. R. (author), Vaessen, P.T.M. (author)
This paper introduces a directional coupler for partial discharge (PD) measurements in gas-insulated substations (GIS). The sensor comprises a combination of magnetic and electric couplers, effectively segregating forward and backward pulses to enhance PD charge estimation and defect location. The sensor's design was supported with finite...
journal article 2024
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Graas, Adriaan B.M. (author), Wagner, E.C. (author), van Leeuwen, Tristan (author), van Ommen, J.R. (author), Batenburg, K. Joost (author), Lucka, Felix (author), Portela, L. (author)
A new X-ray computed tomography technique for the purpose of imaging fluidized beds is presented. It consists of an experimental set-up with three stationary X-ray source and flat panel detector pairs, a geometric calibration and data processing workflow, and an image reconstruction algorithm. The technique enables sparse-angular tomographic...
journal article 2024
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Lecardonnel, A. (author), de Servi, C.M. (author), Colonna, Piero (author), Laboureur, D. (author)
In evaporators, the distribution of the liquid and vapor phases among the channels is a convoluted problem, depending on a wide range of parameters. However, maldistribution causes important losses of performance. Due to their complexity, the accurate modeling of such two-phase flows is difficult to handle. Hence, experimental studies are...
journal article 2024
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Bleeker, J.J. (author), van Kasteren, Celine (author), van Ommen, J.R. (author), Vermaas, D.A. (author)
To make green hydrogen more economically attractive, the energy losses in alkaline electrolysis need to be minimized while operating at high current densities (1 A cm<sup>−2</sup>). At these current densities the ohmic resistance and gas bubbles effects contribute largely to the energy losses. To mitigate the gas bubbles losses, we...
journal article 2024
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El Ghazi, Haddou (author), Eker, Yasin Ramazan (author), En-nadir, Redouane (author), Ahmed, Shrouk Eid Zaki (author), Basyooni, Mohamed A. (author)
The paper deals with the conception and feasibility of the device structure based on the optimized PIN-(In, Ga)N homojunction solar cells. A new and efficient model combining the most realistic ones considering the impacts of band gap narrowing, collection efficiency, Shockley-Read-Hall recombination, and interface polarization is proposed to...
journal article 2024
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Nijboer, Michiel (author), Jan, A. (author), Chen, M. (author), Batenburg, Kevin (author), Peper, Julia (author), Aarnink, Tom (author), Roozeboom, Fred (author), Kovalgin, Alexey (author), Nijmeijer, Arian (author), Luiten-Olieman, Mieke (author)
Atomic layer deposition (ALD) is known for its unparalleled control over layer thickness and 3D conformality and could be the future technique of choice to tailor the pore size of ceramic nanofiltration membranes. However, a major challenge in tuning and functionalizing a multichannel ceramic membrane is posed by its large internal pore...
journal article 2024
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Kapetanović, M. (author), Nunez, Alfredo (author), van Oort, N. (author), Goverde, R.M.P. (author)
This paper presents a method for estimating Well-to-Wheel (WTW) energy use and greenhouse gas (GHG) emissions attributed to the advanced railway propulsion systems implemented in conjunction with different energy carriers and their production pathways. The analysis encompasses diesel-electric multiple unit vehicles converted to their hybrid...
journal article 2024
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Chasan, R. (author), Baron, L.I. (author), Kozowyk, P.R.B. (author), Langejans, G.H.J. (author)
Birch bark tar was used extensively throughout human history. While later ceramic-based production technologies are known, prehistoric aceramic techniques leave little to no archaeological evidence. Experimental tar production attempts to fill this gap and suggest potential techniques. However, their archaeological relevance is unclear....
journal article 2024
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Aghajanloo, M. (author), Yan, L. (author), Berg, Steffen (author), Voskov, D.V. (author), Farajzadeh, R. (author)
Carbon dioxide capture and storage in subsurface geological formations is a potential solution to limit anthropogenic CO<sub>2</sub> emissions and combat global warming. Depleted gas fields offer significant CO<sub>2</sub> storage volumes; however, injection of CO<sub>2</sub> into these reservoirs poses some potential challenges for the...
journal article 2024
Searched for: subject%3A%22gas%22
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