Experimental Investigation into the Performance of PEMFCs with Three Different Hydrogen Recirculation Schemes

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-03-13 DOI:10.3390/inventions9020033

Kejing Li, Chen Wang, Jingjing Li, Lei Wang, Zongji Li, Chuanlong Zhang

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引用次数: 0

Abstract

Hydrogen recirculation systems (HRSs) are vital components of proton exchange membrane fuel cells (PEMFCs), and it is necessary to investigate different HRS schemes to meet the needs of high-power PEMFCs. PEMFCs are developing in the direction of low cost, high power, wide working conditions, low noise, compact structure, etc. Currently, it is difficult for hydrogen recirculation pumps (HRPs) to meet the flow requirements of high-power PEMFCs. HRPs inevitably have high parasitic energy consumption, loud noise output, high cost, easy leakage, and high failure rates. Therefore, it is necessary to study different HRS schemes to develop a better solution for high-power PEMFCs. In this study, the functional prototype of a piping and instrumentation diagram (P&ID) based on three HRSs of HRPs was designed, and a functional prototype was built. Working according to the analysis and comparison of PEMFC performance test data, we find that the net power trend of PEMFC systems using three different HRS technology schemes is consistent. The ejector scheme and the combination scheme do not reduce the performance of PEMFCs and have advantages in different power ranges, such as 24 A, 48 A, and other small current points. The PEFMC system net power order is as follows: ejector scheme > HRP scheme > combination scheme. At about 120 A, the net power outputs of the three HRS schemes in the PEMFC system coincide. From around 180 A onwards, the PEMFC system power of the combined HRS scheme gradually dominates. At 320 A, the PEFMC system net power order is as follows: combined HRS scheme > HRP scheme > ejector scheme.

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采用三种不同氢气再循环方案的 PEMFC 性能实验研究

氢再循环系统（HRS）是质子交换膜燃料电池（PEMFC）的重要组成部分，有必要研究不同的氢再循环系统方案，以满足大功率 PEMFC 的需求。PEMFC 正朝着低成本、高功率、宽工况、低噪音、结构紧凑等方向发展。目前，氢气再循环泵（HRP）很难满足大功率 PEMFC 的流量要求。氢再循环泵不可避免地存在寄生能耗高、噪音大、成本高、易泄漏、故障率高等问题。因此，有必要研究不同的 HRS 方案，为大功率 PEMFC 开发出更好的解决方案。本研究设计了基于三种 HRP HRS 的管道和仪器图（P&ID）的功能原型，并制作了功能原型。根据对 PEMFC 性能测试数据的分析和比较，我们发现采用三种不同 HRS 技术方案的 PEMFC 系统的净功率趋势是一致的。喷射器方案和组合方案不会降低 PEMFC 的性能，而且在不同功率范围内，如 24 A、48 A 和其他小电流点，具有优势。PEFMC 系统的净功率顺序为：喷射器方案 > HRP 方案 > 组合方案。在 120 A 左右，PEMFC 系统中三种 HRS 方案的净功率输出相吻合。从 180 A 左右开始，组合 HRS 方案的 PEMFC 系统功率逐渐占据主导地位。在 320 A 时，PEFMC 系统的净功率顺序如下：组合 HRS 方案 > HRP 方案 > 喷射器方案。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.