Open Access

ARTICLE

The Effect of Inlet Angle Structure of Concave and Convex Plate on Internal Flow Characteristics of Alkaline Electrolyzer

Bo Hui^1,2,*, Shengneng Zhu², Sijun Su², Wenjuan Li²

1 Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing, 400044, China
2 Lanzhou Lanshi Group Co., Ltd., Lanzhou, 730300, China

* Corresponding Author: Bo Hui. Email:

(This article belongs to the Special Issue: Two-phase flow heat and mass transfer in advanced energy systems)

Frontiers in Heat and Mass Transfer 2024, 22(3), 855-868. https://doi.org/10.32604/fhmt.2024.051387

Received 04 March 2024; Accepted 21 May 2024; Issue published 11 July 2024

Abstract

The structure of the concave-convex plates has proven to be crucial in optimizing the internal flow characteristics of the electrolyzer for hydrogen production. This paper investigates the impact of the gradual expansion angle of the inlet channel on the internal flow field of alkaline electrolyzers. The flow distribution characteristics of concave-convex plates with different inlet angle structures in the electrolytic cell is discussed. Besides, the system with internal heat source is studied. The results indicate that a moderate gradual expansion angle is beneficial for enhancing fluid uniformity. However, an excessively large gradual expansion angle may lead to adverse reflux phenomena, reducing the overall performance of the electrolytic cell.

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