Computational assessment of response to fluctuating load of renewable energy in proton exchange membrane water electrolyzer

被引：10

作者：

Xu, Boshi ^{[1
,2
]}

Yang, Yang ^{[1
,2
]}

Li, Jun ^{[1
,2
]}

Wang, Yang ^{[1
,2
]}

Ye, Dingding ^{[1
,2
]}

Zhang, Liang ^{[1
,2
]}

Zhu, Xun ^{[1
,2
]}

Liao, Qiang ^{[1
,2
]}

机构：

[1] Chongqing Univ, Key Lab Low Grade Energy Utilizat Technol & Syst, Minist Educ, Chongqing 400030, Peoples R China

[2] Chongqing Univ, Inst Engn Thermophys, Sch Energy & Powering Engn, Chongqing 400030, Peoples R China

来源：

RENEWABLE ENERGY | 2024年 / 232卷

关键词：

Proton exchange membrane water electrolyzer (PEMWE); Multi-physics model; Fluctuating condition; Dynamic behavior; Hydrogen production; HIGH-PRESSURE; PERFORMANCE; TRANSPORT; FLOW; SYSTEM; MODEL; MASS; CELL;

D O I：

10.1016/j.renene.2024.121084

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Proton exchange membrane water electrolyzer (PEMWE) is a promising technology to consume the fluctuating renewable energy and generate green hydrogen. However, the dynamic responses of physical parameters are still unclear during the fluctuating operation. Herein, a three-dimensional multi-physics model including mass and heat transfer, fluid flow, hydrogen crossover and electrochemical reactions is developed. The transient simulations are conducted and responses of critical parameters towards the fluctuation are analyzed. The temperature response shows a delay of similar to 15 s to reach the steady state, and the overshoot phenomena are observed for the oxygen concentration and voltage when the current density is suddenly changed. Hydrogen crossover shows a sharp rise when the current density is decreased abruptly. The peak value of anode H-2 in O-2 vol% is twice the steady-state value when the current density decreases to 0.1 A cm(-2). This work provides a comprehensive understanding of parameter behaviors under fluctuating conditions and guides the design of specific components.

引用

页数：10

共 45 条

[1] Impact of power supply fluctuation and part load operation on the efficiency of alkaline water electrolysis [J].