Browsing SINTEF Open by Author "Cloete, Schalk Willem Petrus"
Now showing items 21-40 of 67
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Experimental demonstration of pressurized chemical looping combustion in an internally circulating reactor for power production with integrated CO2 capture
Osman, Mogahid; Zaabout, Abdelghafour; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2020)This study presents an experimental demonstration of pressurized chemical looping combustion (CLC) in an internally circulating reactor (ICR). The ICR concept is a novel alternative to the conventional interconnected ... -
Finding synergy between renewables and coal: Flexible power and hydrogen production from advanced IGCC plants with integrated CO2 capture
Szima, Szabolcs; Arnáiz del Pozo, Carlos; Cloete, Schalk Willem Petrus; Chiesa, Paolo; Álvaro, Ángel Jiménez; Cormos, Ana-Maria; Amini, Shahriar (Peer reviewed; Journal article, 2021)Variable renewable energy (VRE) has seen rapid growth in recent years. However, VRE deployment requires a fleet of dispatchable power plants to supply electricity during periods with limited wind and sunlight. These plants ... -
Flexible power and hydrogen production: Finding synergy between CCS and variable renewables
Cloete, Schalk Willem Petrus; Hirth, Lion (Journal article; Peer reviewed, 2020)The expansion of wind and solar power is creating a growing need for power system flexibility. Dispatchable power plants with CO2 capture and storage (CCS) offer flexibility with low CO2 emissions, but these plants become ... -
The future of fuels: Uncertainty quantification study of mid-century ammonia and methanol production costs
Cloete, Schalk Willem Petrus; Arnaiz del Pozo, Carlos; Cloete, Jan Hendrik; Jiménez Álvaro, Ángel (Peer reviewed; Journal article, 2023)Fuels supplied 76% of global final energy consumption in 2021. Although ongoing electrification efforts can significantly reduce this dominant share, fuels will continue to play a leading role in the global energy system. ... -
Gas switching reforming (GSR) for power generation with CO2 capture: Process efficiency improvement studies
Nazir, Shareq Mohd; Cloete, Jan Hendrik; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2019)This paper presents the process improvement studies of a combined cycle power plant integrated with a novel gas switching reforming (GSR) process for hydrogen production with integrated CO2 capture. The overall process is ... -
Gas Switching Reforming (GSR) for syngas production with integrated CO2 capture using iron-based oxygen carriers
Zaabout, Abdelghafour; Dahl, Paul Inge; Ugwu, Ambrose; Tolchard, Julian R; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2019)The process behavior of a Gas Switching Reforming (GSR) reactor was studied using three different iron-based oxygen carrier materials: Iron-oxide on Alumina, Iron-Nickel oxide on Alumina and Iron-Ceria on Alumina. It was ... -
Gas switching reforming for flexible power and hydrogen production to balance variable renewables
Szima, Szabolcs; Nazir, Shareq Mohd; Cloete, Schalk Willem Petrus; Amini, Shahriar; Fogarasi, Szabolcs; Cormos, Ana-Maria; Cormos, Calin-Cristian (Peer reviewed; Journal article, 2019)Variable renewable energy (VRE) is expected to play a major role in the decarbonization of the electricity sector. However, decarbonization via VRE requires a fleet of flexible dispatchable plants with low CO2 emissions ... -
Gas switching technology: Economic attractiveness for chemical looping applications and scale up experience to 50 kWth
Ugwu, Ambrose; Arnaiz del Pozo, Carlos; Zaabout, Abdelghafour; Nazir, Shareq Mohd; Kalendar, Nimet Uzun; Cloete, Schalk Willem Petrus; Szima, Szabolcs; Fogarasi, Szabolcs; Donat, Felix; van Diest, Geert; Cloete, Jan Hendrik; Jiménez Álvaro, Ángel; Albertsen, Knuth; Cormos, Ana-Maria; Cormos, Calin-Cristian; Amini, Shahriar (Peer reviewed; Journal article, 2022)Gas switching technology (GST) was introduced to facilitate operation and scale-up of pressurized chemical looping-based technologies thus bringing the expected benefits of reducing costs and energy penalty of CO2 capture. ... -
The generality of the standard 2D TFM approach in predicting bubbling fluidized bed hydrodynamics
Cloete, Schalk Willem Petrus; Zaabout, Abdelghafour; Johansen, Stein Tore; Annaland, MV; Gallucci, F; Amini, Shahriar (Peer reviewed; Journal article, 2013)Hydrodynamic simulations of a pseudo-2D bubbling fluidized bed were carried out and compared to experiments conducted over a wide range of flow conditions. The primary purpose of this study was to assess the generality of ... -
Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Detailed parametric study
Cloete, Schalk Willem Petrus; Johansen, Stein Tore; Amini, Shahriar (Peer reviewed; Journal article, 2016)This short communication builds on previous work on the grid independence behaviour of the Two Fluid Model in reactive bubbling fluidized bed simulations. Regarding hydrodynamic grid independence behaviour (the numerical ... -
Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Effect of particle size
Cloete, Schalk Willem Petrus; Johansen, Stein Tore; Amini, Shahriar (Peer reviewed; Journal article, 2014)It is well known that particle size has a significant influence on the grid independence behaviour of fluidized bed reactor simulations carried out using the Two Fluid Model (TFM) approach. The general rule of thumb states ... -
Hydrogen production by water splitting using gas switching technology
Ugwu, Ambrose; Donat, Felix; Zaabout, Abdelghafour; Müller, Christoph; Albertsen, Knuth; Cloete, Schalk Willem Petrus; van Diest, Geert; Amini, Shahriar (Peer reviewed; Journal article, 2020)This study demonstrates a novel “Gas Switching Water Splitting (GSWS)” technology for production of pure H2with integrated CO2capture. The reactor concept is based on the chemical looping technology where an oxygen carrier ... -
Hydrogen production by water splitting using gas switching technology
Ugwu, Ambrose; Donat, Felix; Zaabout, Abdelghafour; Müller, Christoph; Albertsen, Knuth; Cloete, Schalk Willem Petrus; van Diest, Geert; Amini, Shahriar (Peer reviewed; Journal article, 2020)This study demonstrates a novel “Gas Switching Water Splitting (GSWS)” technology for production of pure H2 with integrated CO2 capture. The reactor concept is based on the chemical looping technology where an oxygen carrier ... -
IMPLEMENTING THE KINETIC THEORY OF GRANULAR FLOWS INTO THE LAGRANGIAN DENSE DISCRETE PHASE MODEL
Cloete, Schalk Willem Petrus; Amini, Shahriar (SINTEF proceedings;2387-4295, Chapter, 2017) -
Integration of chemical looping combustion for cost-effective CO2 capture from state-of-the-art natural gas combined cycles
Khan, Mohammed Nazeer Ul Hasan; Chiesa, Paolo; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2020)Chemical looping combustion (CLC) is a promising method for power production with integrated CO2 capture with almost no direct energy penalty. When integrated into a natural gas combined cycle (NGCC) plant, however, CLC ... -
Integration of gas switching combustion and membrane reactors for exceeding 50% efficiency in flexible IGCC plants with near-zero CO2 emissions
Arnaiz del Pozo, Carlos; Cloete, Schalk Willem Petrus; Chiesa, Paolo; Jiménez Álvaro, Ángel; Amini, Shahriar (Peer reviewed; Journal article, 2020)Thermal power plants face substantial challenges to remain competitive in energy systems with high shares of variable renewables, especially inflexible integrated gasification combined cycles (IGCC). This study addresses ... -
Internally circulating fluidized-bed reactor for syngas production using chemical looping reforming
Osman, Mogahid; Zaabout, Abdelghafour; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2018)Chemical looping reforming (CLR) is a promising method for achieving autothermal methane reforming without the energy penalty of an air separation unit that is required for partial oxidation (POX) or oxygen-blown autothermal ... -
The Internally Circulating Reactor (ICR) Concept Applied to Pressurized Chemical Looping Processes
Cloete, Schalk Willem Petrus; Zaabout, Abdelghafour; Amini, Shahriar (Peer reviewed; Journal article, 2017)The internally circulating reactor (ICR) has significant potential to reduce costs and simplify scale-up of pressurized chemical looping process concepts. An ICR consists of a single reactor body divided into two or three ... -
Investigation into the effect of simulating a 3D cylindrical fluidized bed reactor on a 2D plane
Cloete, Schalk Willem Petrus; Johansen, Stein Tore; Amini, Shahriar (Peer reviewed; Journal article, 2013)2D planar simulations of 3D cylindrical fluidized bed reactors are routinely carried out in order to reduce computational costs. The error involved in this simplification is largely unknown, however, and this study was ... -
Mapping the operating performance of a novel internally circulating fluidized bed reactor applied to chemical looping combustion
Osman, Mogahid; Zaabout, Abdelghafour; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2020)Chemical looping combustion is a promising technology for minimizing the energy penalty of CO2 capture. To accelerate the scale-up and commercialization of this technology for pressurized operation, the internally circulating ...