Study on the energy efficiency of bioethanol-based liquid hydrogen production process

被引：9

作者：

Li, Kaiyu ^{[1
]}

Gao, Yitong ^{[1
]}

Zhang, Shengan ^{[1
]}

Liu, Guilian ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Xian 710049, Shaanxi, Peoples R China

来源：

ENERGY | 2022年 / 238卷

基金：

中国国家自然科学基金;

关键词：

Hydrogen liquefaction; Exergy analysis; Energy efficiency; Hydrogen liquefaction ratio; EXERGY ANALYSIS; LIQUEFACTION; ETHANOL; DESIGN; CATALYSTS; BIOMASS; GASIFICATION; SYSTEMS; PLANT; CYCLE;

D O I：

10.1016/j.energy.2021.122032

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A hydrogen liquefaction process combined with bioethanol producing hydrogen process and multistage compressor process is designed, simulated and analyzed. Its specific energy consumption (SEC) and coefficient of performance (COP) are 5.41 kWh/k(LH2) and 22.38%, respectively, and the functional exergy efficiency is 71.13% for entire process and 53.61% for the hydrogen liquefaction process. The systematic relationship among hydrogen liquefaction ratio, SEC, COP and functional exergy efficiency of nitrogen precooling cycle, helium cryogenic cycle and whole process are deduced and analyzed. The results show that the process's performance improves with the hydrogen liquefaction ratio, and the variation trends of SEC, COP and functional exergy efficiency change significantly. The optimal hydrogen liquefaction ratio is 0.89, and the corresponding SEC is 4.71 kWh/k(LH2), reduced by 12.94%, the COP and functional exergy efficiency are 25.70% and 81.70%, and the general exergy efficiency is 43.60%. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：14

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