{"title":"Production of green hydrogen in Brazil for exportation from desalinated seawater using energy generated by heliothermal, photovoltaic, and wind plants","authors":"José Henrique Martins Neto","doi":"10.1063/5.0206514","DOIUrl":null,"url":null,"abstract":"A current global trend is the production of green hydrogen via electrolysis of fresh water, preferably extracted from regions that have an abundance of renewable energy, to contribute to the mitigation of global warming. Despite being considered a source of fresh water, Brazil is experiencing a water crisis, with a shortage of water to meet agriculture and hydroelectric generation due to climate effects that affect the water cycle. With the forecast of increasing population and increasing demand for fresh water for consumption, agriculture, and industry, it is necessary to investigate opportunities for the generation of green hydrogen. This article presents results of technical and economic feasibility analyses of eight green hydrogen production systems for export, derived from two main concepts of seawater desalination plants aimed at preserving freshwater for other more noble purposes. All the analyzed systems use electrical and (or) thermal energy generation plants derived from solar and wind energy, with emphasis on heliothermal energy concentration systems. It is observed that the heliothermal systems, generators of electric and thermal energy, require higher investment costs; however, they have hydrogen production costs compatible with those of the other systems and dispatchable daily production of hydrogen and desalinated water. Furthermore, a system that combines thermal energy from a heliothermal plant to drive a thermal desalination plant and electrical energy from photovoltaic and wind plants to drive the electrolyzers was very well classified. Finally, it is verified that desalination plants have negligible investment cost compared to the cost of power and hydrogen plants.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"23 4","pages":""},"PeriodicalIF":16.4000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1063/5.0206514","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A current global trend is the production of green hydrogen via electrolysis of fresh water, preferably extracted from regions that have an abundance of renewable energy, to contribute to the mitigation of global warming. Despite being considered a source of fresh water, Brazil is experiencing a water crisis, with a shortage of water to meet agriculture and hydroelectric generation due to climate effects that affect the water cycle. With the forecast of increasing population and increasing demand for fresh water for consumption, agriculture, and industry, it is necessary to investigate opportunities for the generation of green hydrogen. This article presents results of technical and economic feasibility analyses of eight green hydrogen production systems for export, derived from two main concepts of seawater desalination plants aimed at preserving freshwater for other more noble purposes. All the analyzed systems use electrical and (or) thermal energy generation plants derived from solar and wind energy, with emphasis on heliothermal energy concentration systems. It is observed that the heliothermal systems, generators of electric and thermal energy, require higher investment costs; however, they have hydrogen production costs compatible with those of the other systems and dispatchable daily production of hydrogen and desalinated water. Furthermore, a system that combines thermal energy from a heliothermal plant to drive a thermal desalination plant and electrical energy from photovoltaic and wind plants to drive the electrolyzers was very well classified. Finally, it is verified that desalination plants have negligible investment cost compared to the cost of power and hydrogen plants.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.