Kesit alan geometri etkisinin PEM yakıt hücresinin performansı üzerine incelenmesi

Öz

Bu çalışmada, düşük sıcaklıklarda çalışan tek kanallı bir proton değişim membranlı yakıt hücresi modellenmiştir. Hazırlanan model deneysel verilerle karşılaştırılmış ve doğruluğu kanıtlanmıştır. Bu model kullanılarak, kanal yüksekliği sabitken kanal genişliğindeki değişimin hücre performansına etkisi ve kanal kesit alanı sabitken kanal geometrisindeki değişim araştırılmıştır. Reaktantın difüzyon tabakası ile temas ettiği alanın büyütülmesinin performans artışı sağladığı tespit edilmiştir. Ancak düşük voltajlarda çalışırken taban açısı ve kanal genişliğinin artmasıyla artan konsantrasyon kayıplarının azaldığı gözlemlenmiştir.

Anahtar Kelimeler

• PEM yakıt pili
• kesit alanı
• kanal geometrisi
• modelleme

Investigation of the cross-section area geometry effect on the performance of PEM fuel cell

Öz

In this study, a proton exchange membrane fuel cell operating at low temperatures with a single channel is modeled. The prepared model has been compared with experimental data and its accuracy has been proved. Using this model, the impact of the change of the channel width on the cell performance with the channel height being constant and the change of the channel geometry with the channel cross-sectional area being constant was investigated. It has been found that the enlargement of the area where the reactant contacts the diffusion layer provides an increase in performance. However, when working at low voltages, it has been observed that increasing concentration losses decrease with increasing base angle and channel width.

Anahtar Kelimeler

• PEM fuel cell
• Cross-section area
• Channel geometry
• Modeling

Kaynakça

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9. [9] X. D. Wang, Y. Y. Duan, W. M. Yan, and X. F. Peng, “Effects of flow channel geometry on cell performance for PEM fuel cells with parallel and interdigitated flow fields,” Computational Thermal Sciences, 53(16), pp. 5334-5343, 2008.
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