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Krijgsman, Floris (author)Supercritical CO<sub>2</sub> (SCO<sub>2</sub>) is a promising alternative to traditional working fluids in heat pumps and power cycles due to its high density, thermal efficiency, and stability. These properties allow for the design of more compact and efficient equipment. However, accurately modeling supercritical heat transfer, especially near...master thesis 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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Singh, Ankit (author)Amidst the rise in fossil fuel consumption and the global energy crisis, there is a growing demand for clean, environmentally friendly, and sustainable energy solutions in industrial processes. One promising approach is to substitute conventional working fluids in power cycles with supercritical fluids. Over recent decades, substantial research...master thesis 2023
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Naik, Atharv (author)In recent years, a considerable amount of research has been directed towards making energy generation more efficient to combat global warming. To aid this goal, the use of supercritical fluids (SCFs) is gaining a lot of traction. SCFs have only one phase and experience a sharp variation of thermophysical properties when heated sufficiently....master thesis 2023
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D'Aguanno, A. (author)The flight envelope of an aircraft operating at high subsonic velocities is bounded by several limitations, one of these consists in thewing experiencing oscillations of a shockwave on its suction side for a certain range ofMach number (Ma), angle of attack (®) and Reynolds number (Re). This phenomenon is referred to as transonic buffet and it...doctoral thesis 2023
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Wang, J. (author), Yan, Xin ping (author), Boersma, B.J. (author), Lu, Ming jian (author), Liu, Xiaohua (author)Printed circuit heat exchangers (PCHE) are designed to improve heat recovery and energy saving in supercritical CO<sub>2</sub> (S-CO<sub>2</sub>) power cycles. In the current study, a modified channel PCHE is proposed based on the regular straight channel and a zigzag channel. The thermal–hydraulic performance of four different types of PCHE...journal article 2023
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Dave, K (author), Gangoli Rao, A. (author)The power sector accounts for ∼40% of global energy-related CO<sub>2</sub> emissions. Its decarbonization by switching to low-carbon renewables is essential for a sustainable future. Existing electrical grids, however, have limited capacity to absorb the variability introduced by these new energy sources and rely largely on natural-gas-based...journal article 2023
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Yang, Yueming (author), Wang, Xurong (author), Hooman, K. (author), Han, Kuihua (author), Xu, Jinliang (author), He, Suoying (author), Qi, Jianhui (author)Recently, the supercritical carbon dioxide (SCO<sub>2</sub>) power cycle has become a hotspot in the field of energy-efficient utilization. The utilization of additives in the power cycle has been proven to be an effective way to improve the SCO<sub>2</sub> power cycle efficiency. As one of the core components of the system, the influence of...journal article 2023
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Fluttert, Bob (author)The Intergovernmental Panel on Climate Change (IPCC) believes that multiple solutions must be deployed simultaneously to reduce the emission of greenhouse gases into the atmosphere. Carbon, Capture & Storage (CCS) is an unavoidable technique within this portfolio as an intermediate solution. CCS requires transport of CO<sub>2</sub> through...master thesis 2022
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Research Progress on Convective Heat Transfer Characteristics of Supercritical Fluids in Curved TubeLiu, Xinxin (author), Li, Shuoshuo (author), Liu, Liang (author), He, Chao (author), Sun, Zhuang (author), Özdemir, F. (author), Aziz, Muhammad (author), Kuo, Po-Chih (author)Because of their compact structure, ease of processing and higher heat transfer coefficient, curved-tube heat exchangers are widely applied in various industry applications, such as nuclear power systems, solar-powered engineering, aircraft engine cooling systems and refrigeration and cryogenic systems. Accurate knowledge about the heat transfer...journal article 2022
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Battisti, F. G. (author), de Araujo Passos, L.A. (author), da Silva, A. K. (author)Investigating supercritical natural fluids for efficient and clean energy production has become a trending research topic due to their technical and environmental advantages. However, on account of the supercritical operational conditions, using specially-developed components increases manufacturing prices, especially when dealing with solar...journal article 2022
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Wang, Jianyong (author), Yang, Jun (author), Gong, Jishuang (author), Zhao, Chunrong (author), Hooman, K. (author)Supercritical flow through a horizontal pipe leads to a non-uniform peripheral wall temperature distribution even when the wall heat flux is kept constant and uniform. This is attributed to lower heat transfer coefficient at the top section where the denser fluid tends to sink. Hence, to obtain a uniform wall temperature, a designed wall...journal article 2022
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Recalde Moreno Del Rocio, M.D.R. (author), Amladi, Amogh (author), Venkataraman, Vikrant (author), Woudstra, T. (author), Aravind, P.V. (author)The low cost of electricity in some areas facilitates the adoption of high-temperature electrolysis plants for the large-scale storage of electricity. Supercritical water gasification (SCWG) is a promising method of syngas production from wet biomass. Additionally, it is a potential source of steam for electrochemical plants. However, the...journal article 2022
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van Dis, Daniëlle (author)Purpose: Patients with tracheal lesions that exceed half of the trachea’s total length require a tracheal substitute. Tissue engineering, using either synthetic materials or decellularized tracheal tissue, opens up new possibilities for generating tracheal substitutes. Decellularization, a procedure in which the tissue's...master thesis 2021
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Christofi, Marios (author)The process in which a smooth laminar flow transits to a chaotic to a chaotic, turbulent state, is a topic of particular interest in the sectors of energy technology and aerodynamics. To study the different paths that can be followed during the transition process, various tools and methods have been developed. A preliminary investigation of the...master thesis 2021
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Otero Rodriguez, G.J. (author)The global temperature rise, which directly results from greenhouse gases emitted by burning fossil fuels, requires humanity to harness renewable energy sources at an increased rate. However, renewable energy sources are either highly intermittent, such as wind and solar radiation, or available at low temperatures leading to low efficiencies of...doctoral thesis 2021
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Goel, A. (author)Due to growing awareness and rising concern over the climate change impact, the demand for renewable energy has been increasing. In the coming decades, biomass is expected to play a crucial role as it is one of the most plentiful and well-utilized renewable resources in the world. Biomass can be sustainably converted to solid/liquid/gaseous...master thesis 2020
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Pini, M. (author), de Servi, C.M. (author)This paper documents a numerical study on entropy generation in zero-pressure gradient, laminar boundary layers of adiabatic non-ideal compressible fluid flows. The entropy generation is expressed in terms of dissipation coefficient $$C:\mathrm {d}$$ and its dependency on free-stream Mach number, fluid molecular complexity, and flow non...conference paper 2020
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Tempel, Auke (author)Regular maintainance dredging is a large expense to the Port of Rotterdam, therefore the installation of sediment traps is considered. By increasing the bathymetry locally, an increase of local accumulation is expected and a decrease deeper in the harbour basin. This thesis describes the functioning of sediment traps in a stratified tidally...master thesis 2019
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Derksen, Adriaan (author)Recent innovations in the off-shore wind industry have lead to bigger wind turbines and taller support structures. These towers can suffer from vortex-induced vibrations (VIV). The present work couples the open-source CFD solver OpenFOAM with a structural solver to investigate these fluid-structure interactions (FSI) effects in more detail. 2D...master thesis 2019