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고온 수전해 고체 산화물 시스템의 온도 분포에 대한 수치해석
이지원(Jiwon Lee),이상일(Sang-il Lee),계덕훈(Deok Hoon Kye),박현재(Hyun Jae Park),박경태(Kyungtae Park),신지영(Jeeyoung Shin),박우성(Woosung Park) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Solid oxide electrolysis is a potential candidate for hydrogen production, and a key challenge for its commercialization is to achieve both efficient and reliable fuel generation.While the temperature nonuniformity of solid oxide cell significantly affects associated electrochemical reactions, the relation between the electrochemical reaction and the temperature distribution is elusively understood. In this work, we model a 3D solid oxide electrolysis cell and investigate the local temperature distribution of the cell using numerical simulation. The multi-physics model includes electrochemistry, ion/charge transport, and heat transfer. As a validation purpose, we compare our model with existing experimental data and further quantify the temperature nonuniformity due to associated electrochemical reactions. We find that the average temperature across the channel is predominantly dicated by electrochemical reaction, and the minimal temperature rise is expected at thermalneutral voltage.