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Design and Optimization of a Fuel‐ and Air‐Preheater for Reversible Solid Oxide Fuel Cells
Author(s) -
Jia X.,
Pei P.
Publication year - 2018
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201800048
Subject(s) - air preheater , inlet , environmental science , materials science , nuclear engineering , mechanical engineering , waste management , engineering
In this study, fuel‐ and air‐preheater for reversible solid oxide fuel cells (RSOFCs) are designed and optimized to improve energy utilization. The fuel‐ and air‐preheater models are established and validated to be correct by comparison to experiment results. Geometry parameters of air‐ and fuel‐ preheater are optimized to get smaller temperature differences (Δ T ) between hot side inlet and cold side outlet. The other main optimization is to reduce pressure losses Δ P in preheater channels. It is founded that three geometry parameters have significant influences on Δ T and Δ P , which are plate number, width and height of fuel‐ and air‐preheater. For fuel preheater, the smallest Δ T and Δ P are obtained when geometry parameters are 9 plates, 4.8 mm width and 5 mm height. For air preheater, they are 7 plates, 1 mm width and 5 mm height. This study shows new preheater models and analyzes the influence parameters of a reversible process on design. Smaller Δ T and Δ P are achieved by modifying these parameters, which make full use of recycling energy and minimize operating costs.