Design of a solid oxide fuel cell (SOFC) combined cycle power plant
Compared with fossil fuels that emit green house gas, Fuel cell is probably the potential choice of energy in 21 st century, including solar energy, wind and nuclear energy. Among all types of fuel cells, Solid Oxide Fuel Cells attracts the most attention nowadays. The operating temperature...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2015
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| Online Access: | http://hdl.handle.net/10356/65129 |
| _version_ | 1826129088024150016 |
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| author | Ma, Wenjing |
| author2 | Zhao Jiyun |
| author_facet | Zhao Jiyun Ma, Wenjing |
| author_sort | Ma, Wenjing |
| collection | NTU |
| description | Compared with fossil fuels that emit green house gas, Fuel cell is probably the
potential choice of energy in 21 st century, including solar energy, wind and nuclear
energy. Among all types of fuel cells, Solid Oxide Fuel Cells attracts the most
attention nowadays. The operating temperature of the solid oxide fuel cells is very
high. And, this quality shows that it is possible to add extra devices to the SOFC to
construct a hybrid system. When hydrogen and oxygen are fed into the fuel cell,
electrochemical reactions in the fuel cell could generate power and heat. However,
there is still some unreacted fuel gas at the exit of the fuel cell. Therefore, further
burning the products arising from the fuel cell may increase the power generation as
well as the efficiency.
In this study, SOFC combined with gas turbine power system model is introduced.
And a combustor model is also introduced to bum the unreacted fuel. This process
can generate more heat and increase the gas temperature directly. The high
temperature gas from the combustor chamber expands in the gas turbine which
generates more power and increases the power efficiency, indirectly. Based on the
mass and energy balance as well as thermal dynamics, a 0-D SOFC turbine model is
introduced. The other two models are also the formulations of thermal dynamics and
gas flow process. The Simulink model for the system is derived from the
electrochemical and gas flow process. Based on the figures obtained from Simulink
simulation, a series of comparisons are made to configure the influence of input
variables such as current density, temperature and pressure in order to explore
optimal operating conditions. |
| first_indexed | 2024-10-01T07:35:21Z |
| format | Thesis |
| id | ntu-10356/65129 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:35:21Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/651292023-07-04T15:23:51Z Design of a solid oxide fuel cell (SOFC) combined cycle power plant Ma, Wenjing Zhao Jiyun School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering Compared with fossil fuels that emit green house gas, Fuel cell is probably the potential choice of energy in 21 st century, including solar energy, wind and nuclear energy. Among all types of fuel cells, Solid Oxide Fuel Cells attracts the most attention nowadays. The operating temperature of the solid oxide fuel cells is very high. And, this quality shows that it is possible to add extra devices to the SOFC to construct a hybrid system. When hydrogen and oxygen are fed into the fuel cell, electrochemical reactions in the fuel cell could generate power and heat. However, there is still some unreacted fuel gas at the exit of the fuel cell. Therefore, further burning the products arising from the fuel cell may increase the power generation as well as the efficiency. In this study, SOFC combined with gas turbine power system model is introduced. And a combustor model is also introduced to bum the unreacted fuel. This process can generate more heat and increase the gas temperature directly. The high temperature gas from the combustor chamber expands in the gas turbine which generates more power and increases the power efficiency, indirectly. Based on the mass and energy balance as well as thermal dynamics, a 0-D SOFC turbine model is introduced. The other two models are also the formulations of thermal dynamics and gas flow process. The Simulink model for the system is derived from the electrochemical and gas flow process. Based on the figures obtained from Simulink simulation, a series of comparisons are made to configure the influence of input variables such as current density, temperature and pressure in order to explore optimal operating conditions. Master of Science (Power Engineering) 2015-06-15T03:40:15Z 2015-06-15T03:40:15Z 2014 2014 Thesis http://hdl.handle.net/10356/65129 en 70 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Ma, Wenjing Design of a solid oxide fuel cell (SOFC) combined cycle power plant |
| title | Design of a solid oxide fuel cell (SOFC) combined cycle power plant |
| title_full | Design of a solid oxide fuel cell (SOFC) combined cycle power plant |
| title_fullStr | Design of a solid oxide fuel cell (SOFC) combined cycle power plant |
| title_full_unstemmed | Design of a solid oxide fuel cell (SOFC) combined cycle power plant |
| title_short | Design of a solid oxide fuel cell (SOFC) combined cycle power plant |
| title_sort | design of a solid oxide fuel cell sofc combined cycle power plant |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | http://hdl.handle.net/10356/65129 |
| work_keys_str_mv | AT mawenjing designofasolidoxidefuelcellsofccombinedcyclepowerplant |