Journal
RENEWABLE ENERGY
Volume 180, Issue -, Pages 502-515Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2021.08.110
Keywords
Hydrogen production; Temperature and pressure sensitivity; analysis; Water electrolysis; Hydrogen compression; Hydrogen storage; Pressurized electrolyzer
Ask authors/readers for more resources
This study investigated the integration of electrolysis units and compressors at on-site hydrogen refueling stations, focusing on the impact on energy consumption and economic benefits. The results suggest that installing a high-pressure electrolyzer can lead to significant energy savings.
By considering on-site hydrogen refueling stations, investigations are still needed on how the integration between electrolysis units and compressors can be better matched by tuning the operating parameters, such as temperature and pressure, and how it could affect the energy consumption and the overall efficiency. This paper presents a comprehensive characterization of a hydrogen production facility, composed of a water-based electrolysis unit, a volumetric compressor, and a storage system, up to 350 bar. Their operation is investigated through a sensitivity analysis: pressure and temperature are used as parametric inputs to forecast the different energy performance of the system in terms of voltage efficiency, stack efficiency, cell voltage, and system efficiency, as well as the influence of the over-voltages. An economic analysis is also presented, to compare the benefits of a high-pressure electrolyzer (up to 30 bar), showing that its installation can lead to important savings, up to 670 kV of energy saved by a less demanding compression process in 20 years for an electrolysis capacity of 1.5 ton/day. (c) 2021 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available