摘要
在“双碳”目标下,用电解水制备绿氢替代化石能源生产灰氢,对推动绿色低碳的现代能源体系建设具有重要意义.因输入电能和热能具有品位和经济性差异,如何快速确定经济节能的电制氢运行参数和换热结构是一个待解决的问题.为了降低制氢成本和减少能量品位浪费,针对3种类型的电解槽,通过调整运行参数、换热器配置结构和热电比,降低设备能耗、回收余热、进行能量梯级利用,从而实现减少运行成本、降低能量输入、减少能量品位浪费的目的.这与火用效率和制氢成本密切相关,为寻找火用效率最大和制氢成本最小的电解水方案,采用双目标优化算法解决同时考虑能量品位和经济性的混合整数非线性优化问题.最后,分析一个场景的案例,表明优化方法不仅可以提高经济性,还有助于提高火用效率.
Under the"dual carbon"goal,using water electrolysis to produce green hydrogen instead of fossil fuels to produce gray hydrogen is of great significance for promoting the construction of a green and low-carbon modern energy system.Due to the differences in grade and economy between input electrical energy and thermal energy,the way to quickly determine the economic and energy-saving operating parameters and heat exchange structure of water electrolysis is a problem that needs to be solved.To reduce hydrogen production costs and minimize energy grade waste,three types of water electrolysis hydrogen production schemes are adjusted by adjusting operating parameters,heat exchanger configuration structure,and thermoelectric ratio to reduce equipment energy consumption,recover waste heat,and carry out energy cascade utilization,thereby achieving the goal of reducing operating costs,energy input,and energy grade waste.This is closely related to hydrogen production exergy efficiency and cost.To find the water electrolysis solution with the highest exergy efficiency and the lowest hydrogen production cost,a dual objective optimization algorithm is adopted to solve the mixed integer nonlinear optimization problem that considers both energy grade and economy simultaneously.Finally,analyzing a case study of a scenario demonstrates that optimization methods can not only improve economic efficiency,but also contribute to improving exergy efficiency.
作者
程澄
徐昌哲
孔婵
叶爽
黄伟光
Cheng Cheng;Xu Changzhe;Kong Chan;Ye Shuang;Huang Weiguang(School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;Institute of Carbon Neutrdity,ShanghaiTech University,Shanghai 201210,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China;Faculty of Science and Engineering,University of Nottingham Ningbo China,Ningbo 315199,China)
出处
《河南师范大学学报(自然科学版)》
北大核心
2025年第4期90-98,I0016,共10页
Journal of Henan Normal University(Natural Science Edition)
基金
国家重点研发计划(2019YFE0122100)
中国科学院洁净能源创新研究院合作基金项目(DNL202023).
关键词
电解水制氢
换热网络
优化设计
过程系统
系统性能分析
hydrogen production by water electrolysis
heat exchanger network
optimal design
process systems
system performance analysis
