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| Author(s): |
Lourenço Gobira Alves
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Mecânica |
| Defense date: | 2007-02-27 |
| Examining board members: |
Silvia Azucena Nebra;
Silvio de Oliveira Junior;
Gustavo Paim Valença;
Luiz Fernando Milanez;
Arnaldo César da Silva Walter
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| Advisor: | Silvia Azucena Nebra |
| Abstract | |
The prices of Petroleum allied to the increase of the participation of the Natural Gas in the national energy matrix have forced the society to search for more rational uses for the gas by economic and environmental reasons. According to some authors, hydrogen is the fuel of the future and the production of hydrogen from natural gas is an alternative to improve the gas uses. This work performs an exergoeconomic analysis of two basic processes to produce hydrogen, Stem Methane Reforming, SMR, and Autothermal Reforming, AtR, using the Theory of Exergetic Cost, TEC, and the Functional Analysis, AF. Two cogeneration possibilities in the processes are also considered, resulting in four study cases with the possibility of producing surplus of electric energy to sell. And an optimization study is performed to improve the hydrogen production and reduce the irreversibility. The results shown that cogeneration is a useful possibility but must be applied according to the Brazilian energy market. The optimization process increased the results in the four cases (AU) | |