Bulletin of the American Physical Society
76th Annual Gaseous Electronics Conference
Volume 68, Number 9
Monday–Friday, October 9–13, 2023; Michigan League, Ann Arbor, Michigan
Session EF2: Modeling & Simulation VII: Physicochemical Processes
10:00 AM–12:00 PM,
Friday, October 13, 2023
Room: Michigan League, Vandenberg
Chair: Tugba Piskin, University of Michigan
Abstract: EF2.00004 : Three-dimensional modelling of non-equilibrium Ar-CO2 solar-enhanced microwave atmospheric plasma for CO2 conversion*
11:00 AM–11:15 AM
Presenter:
Juan P Trelles
(U Mas Lowell)
Authors:
Ephraim M Simasiku
(University of Massachusetts Lowell)
Juan P Trelles
(U Mas Lowell)
Solar-Enhanced Microwave Plasma (SEMP) carbon dioxide (CO2) conversion has the potential to be a more economically-viable and environmentally-benign method for converting CO2 to higher-value products. We present the computational modelling of an experimentally-characterized SEMP reactor operating with an Ar-CO2 mixture at atmospheric pressure and with 700 W of microwave power and up to 525 W of solar power (incident concentrated solar radiation). The model comprises fully-coupled descriptions of electron transport, species conservation, fluid flow, heat transfer, electrostatics-microwave electromagnetic, and radiative transport phenomena. The model is implemented in a three-dimensional (3D) description of the reactor geometry, which has been demonstrated to be essential for the realistic depiction of microwave-plasma coupling. The simulation results show increased CO2 conversion caused by the greater power density of the plasma due to the direct absorption of solar radiation.
Presentation Summary:
Solar-plasma carbon dioxide conversion exploits the combined use of concentrated solar radiation and electricity towards more sustainable and economically-viable processes. This talk presents recent progress in the understanding of CO2 conversion in a Solar-Enhanced Microwave Plasma (SEMP) reactor via a self-consistent plasma flow model. The model encompasses a 3D description of the reactor to appropriately describe microwave-plasma coupling, together with a fully-coupled treatment of electron transport, Ar-CO2plasma species conservation, fluid flow, heat transfer, electrostatics-microwave electromagnetic, and radiative transport phenomena. The simulation results reveal the mechanisms for enhanced CO2 conversion by the incorporation of solar radiation in a microwave plasma.
*The U.S. National Science Foundation has funded this research through the award CBET-1552037
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