Impact of Channel Geometry and Operating Temperature on the Performance of Solid Oxide Electrolyzer Cells: A Study of Uniform and Non-Uniform Temperature Effects

Abstract

This study investigates the effects of channel geometry and operating temperature on the performance of Solid Oxide Electrolyzer Cells (SOECs), a promising technology for efficient hydrogen production. Through computational simulations and experimental analysis, we explore the impact of different channel designs—rectangular, triangular, and semicircular—on system efficiency. Among the geometries, rectangular channels deliver the highest performance, with a 10% efficiency improvement over the others. Additionally, increasing the operating temperature from 1073 K to 1273 K accelerates reaction kinetics, yielding a 15% efficiency gain. The study identifies the optimization of both channel design and temperature as crucial for maximizing hydrogen production. Furthermore, the research finds that non-uniform temperature distribution has minimal impact on performance for the small-scale fuel cell configuration used. These findings emphasize the importance of understanding the interplay between geometry and operating conditions in SOEC design and contribute to the advancement of sustainable hydrogen production technologies.

Keywords

• Solid oxide electrolyzer cells
• Channel geometry
• Uniform temperature distributions
• Non-uniform temperature distributions

Katı Oksit Elektrolizör Hücrelerinin Performansı Üzerindeki Kanal Geometrisi ve Çalışma Sıcaklığının Etkisi: Düzgün ve Düzgün Olmayan Sıcaklık Etkilerinin İncelenmesi

Öz

Bu çalışma, verimli hidrojen üretimi için umut verici bir teknoloji olan Katı Oksit Elektrolizör Hücrelerinin (SOEC) performansı üzerindeki kanal geometrisi ve çalışma sıcaklığının etkilerini incelemektedir. Hesaplamalı simülasyonlar ve deneysel analizler yoluyla, farklı kanal tasarımlarının — dikdörtgen, üçgen ve yarım daire — sistem performansı üzerindeki etkisi araştırılmaktadır. Geometriler arasında dikdörtgen kanallar, diğerlerine kıyasla %10 oranında daha yüksek bir performans sergileyerek en yüksek verimliliği elde etmektedir. Ayrıca, çalışma sıcaklığının 1073 K'den 1273 K'ye yükseltilmesi, reaksiyon kinetiğini hızlandırarak %15 oranında bir verimlilik artışı sağlamaktadır. Çalışma, hem kanal tasarımının hem de sıcaklık optimizasyonunun, hidrojen üretiminin maksimize edilmesi açısından kritik öneme sahip olduğunu belirlemektedir. Ayrıca, araştırma, kullanılan küçük ölçekli yakıt hücresi yapılandırmasında düzensiz sıcaklık dağılımının performans üzerinde minimal bir etkisi olduğunu ortaya koymaktadır. Bu bulgular, SOEC tasarımında geometri ve işletme koşulları arasındaki etkileşimin anlaşılmasının önemini vurgulamakta ve sürdürülebilir hidrojen üretim teknolojilerinin gelişimine katkı sağlamaktadır.

Anahtar Kelimeler

• Katı oksit elektrolizör hücreleri
• Kanal geometrisi
• Düzenli sıcaklık dağılımı
• Düzensiz sıcaklık dağılımı

Kaynakça

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