Multi-physical Field Coupling Calculation of Hydrogen Productionfrom Microwave Plasma Water Vapor Assisted by Tungsten Electrode
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Author NameAffiliation
LIU Xin1,TIAN Wen-yan1,LI Hao1,LI Ze-min1,2 1. School of Electronic and Information Engineering,Taiyuan University of Science and Technology, Taiyuan 030024,China
2. China Mobile Communications Group Shanxi Co. , Ltd. Taiyuan Branch, Taiyuan 030009,China 
Fund Project:山西省自然科学基金(201901D111256)
 
Abstract:In this paper, the coupling method of electromagnetic field and plasma field is used to calculate the multi -physical coupling of the tumgsten electrode assisted microwave plasma hydrogen production process, and the electron density, electron temperature, hydrogen and water vapor concentration during hydrogen production process are calculated. The results show that during 10-16 s to 10-15 s, the electron density and temperature increase and spread from electrode to electrode, and the hydrogen concentration increases slowly. In the process of 10-15 s to 10-14 s, the electron density and electron temperature reach the maximum value of 5. 45×1017 electrons/ m3 and 1. 83×105 eV respectively, and the hydrogen concentration increases by 1. 783×10-15 mol/ m3, far more than in other periods. In the process from 10-14 s to 10-13 s, the electron density and electron temperature do not increase but decrease, and the hydrogen concentration also tends to increase gently. This indicates that during the process of 10-15 s to 10-14 s, the hydrogen production rate also reaches the maximum when the electron density and electron temperature reach the maximum.
keywords:microwave, plasma, multi-physical field coupling calculation, tungsten electrode, hydrogen production
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