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Publication
Analysis of Seawater Electrolysis Technologies for Green Hydrogen Production
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| 1.69 MB | Adobe PDF |
Advisor(s)
Abstract(s)
The main goal of this study is to understand the
technical and economic feasibility of installing and operating a
seawater desalination plant to supply water to a GW-scale water
electrolysis process. That hydrogen production facility should be
powered by dedicated renewable energy sources such as wind and
solar photovoltaic. The announcement of significant investments in
hydrogen production in the Sines region makes it relevant to
perform a detailed analysis of the operation of this type of system
that will present challenges with regards to the electricity and water
supply. Water, in particular freshwater, is a scarce resource in the
south of Portugal and the installation of an industry that uses large
amounts of water as feedstock can place considerable pressure
on existing reserves. Given the proximity of the region to the
Atlantic Ocean, it is appropriate to evaluate the installation of a
desalination plant and analyze the overall impact of that option on
hydrogen production.
The levelized cost of desalinated water is estimated and
compared to the cost of grid water. It has been found that the
levelized cost of desalinated water is lower than the price of potable
water supplied to the local industries by the Sines municipal water
service (Águas de Santo André).
The impact on the levelized cost of hydrogen is analyzed. It
is shown that the installation and operation of the desalination unit
increases the levelized cost of hydrogen by less than 1%.
Seawater desalination is shown to be a technically viable
alternative for producing the water feedstock for a GW-
scale electrolysis facility that could alleviate pressure on local
freshwater sources
Description
Trabalho apresentado em 1st International Conference on Challenges in Engineering, Medical, Economics and Education: Research & Solutions (CEMEERS-23), June 21-22 2023, Lisbon, Portugal
Keywords
Hydrogen Electrolysis Water Desalination