Blar i SINTEF Open på forfatter "Amini, Shahriar"
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Evaluation of a filtered model for the simulation of large scale bubbling and turbulent fluidized beds
Cloete, Schalk; Johansen, Stein Tore; Amini, Shahriar (Peer reviewed; Journal article, 2013)Full 3D flow simulations of lab and industrial scale dense fluidized beds were carried out using a filtered Eulerian-Eulerian approach. Filtered closures for interphase momentum exchange, solids stresses and additional ... -
Exergy Analysis of Gas Switching Chemical Looping IGCC Plants
del Pozo, Carlos Arnaiz; Álvaro, Ángel Jiménez; Cloete, Jan Hendrik; Cloete, Schalk Willem Petrus; Amini, Shahriar (Peer reviewed; Journal article, 2020)Integrated gasification combined cycles (IGCC) are promising power production systems from solid fuels due to their high efficiency and good environmental performance. Chemical looping combustion (CLC) is an effective route ... -
Experimental Demonstration of a Novel Gas Switching Combustion Reactor for Power Production with Integrated CO2 Capture
Zaabout, Abdelghafour; Cloete, Schalk Willem Petrus; Johansen, Stein Tore; Annaland, MV; Gallucci, F; Amini, Shahriar (Peer reviewed; Journal article, 2013)This paper experimentally demonstrates the feasibility of a novel gas switching combustion (GSC) reactor as an alternative to the traditional chemical looping combustion (CLC) process for power production with integrated ... -
Experimental Demonstration of a Novel Gas Switching Combustion Reactor for Power Production with Integrated CO2 Capture
Zaabout, Abdelghafour; Cloete, Schalk Willem Petrus; Johansen, Stein Tore; Annaland, MV; Gallucci, F; Amini, Shahriar (Peer reviewed; Journal article, 2013)This paper experimentally demonstrates the feasibility of a novel gas switching combustion (GSC) reactor as an alternative to the traditional chemical looping combustion (CLC) process for power production with integrated ... -
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 ... -
Full Plant Scale Analysis of Natural Gas Fired Power Plants with Pre-Combustion CO2 Capture and Chemical Looping Reforming (CLR)
Nazir, Shareq Mohd; Bolland, Olav; Amini, Shahriar (Peer reviewed; Journal article, 2017)In this study, first of its kind complete plant scale integration of pre-combustion CO2 capture method with Chemical Looping Reforming (CLR) of Natural Gas (NG), Water Gas Shift (WGS) process, CO2 capture and CO2 compression ... -
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 Reforming for syngas production with iron-based oxygen carrier-the performance under pressurized conditions
Ugwu, Ambrose; Zaabout, Abdelghafour; Tolchard, Julian R; Dahl, Paul Inge; Amini, Shahriar (Peer reviewed; Journal article, 2019)A four-stage Gas Switching Reforming for syngas production with integrated CO2 capture using an iron-based oxygen carrier was investigated in this study. The oxygen carrier was first reduced using dry methane, where high ... -
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 ... -
Hydrodynamic investigation into a novel IC-CLC reactor concept for power production with integrated CO2 capture
Zaabout, Abdelghafour; Cloete, Schalk; Amini, Shahriar (SINTEF Proceedings;1, Chapter; Conference object; Peer reviewed, 2015)This paper presents an investigation of the hydrodynamics of a new Chemical Looping Combustion (CLC) reactor concept for power generation with integrated CO2 capture. This concept consists of an internal circulating fluidized ... -
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 ...