1. Suggestion of the optimum SOFC/GT hybrid system
2016 1st semester Fuel cell Term project
Suggestion of the optimum SOFC/GT hybrid system
Jong-Ho Kim
Professor Yong-Tae Kim
Pusan National University Mechanical Engineering Energy System
Good afternoon, everyone. I`m a graduate student majoring in mechanical engineering in Pusan National University. And I`m in Energy Conversion System Laboratory and studying combustion of solid fuels such as coal and biomass. As this laboratory do a lot of studies and analysis about characteristics of many kinds of solid fuel, I got a chance to study how char coal is burned. Today, I`m supposed to introduce one of the study about preventing suicide by combustion of char coal. In this study, I fabricated experimental char coal and did combustion experiments to analyze carbon monoxide gas reduction effectiveness. So, let me start a presentation.

2. Contents Research background 1 Research objective 2 Analysis of cycles3
Analysis of cycles
Conclusions 4
This is procedure of contents I`m going to show you.
Latest trend of research 5
Pusan National University, Pusan Clean Coal Center

3. Necessity of fuel cell technology
IPCC & COP21 Climate Change deal
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Source : IPCC WGI AR5 SPM, 2013
Statement from South Korea : suggestion of decreasing 37% of predicted GHG until 2030
Need of sustainable and high efficient energy system
Pusan National University, Pusan Clean Coal Center

4. Introduction of SOFC Basic of Solid Oxide Fuel Cell Cathode Anode
Overall
Source :
Reforming types and reaction
Steam reforming
Gas-shifting
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Anode side
Source : Research, development, and demonstration of molten carbonate fuel cell systems in fuel cell systems, Selman JR. In: Blomen LJM, Mugerwa MN, editors, p. 419.
Pusan National University, Pusan Clean Coal Center

5. Application of SOFC Advantages : Application in power generation
Chemical energy of fuel gas
High electrical efficiency
Only two phase are required
(gas and solid)
Efficiency is expected over 70%
Ability to handle a wide range of fuel
High temperature
(600~1000℃)
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Pusan National University, Pusan Clean Coal Center

6. SOFC/GT system
Schematic diagram of system and T-S diagram for Brayton cycle 5
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Possibility of generation of electricity from both SOFC and GT
Efficiency : about 70%
Fuel : methane
Source : McPhail SJ, Aarva A, Devianto H, Bove R, Moreno A. SOFC and MCFC: commonalities and opportunities for integrated research. Int J hydrogen Energy 2011;36:
Pusan National University, Pusan Clean Coal Center

7. Contents Research background 1 Research objective 2 Analysis of cycles3
Analysis of cycles
Conclusions 4
This is procedure of contents I`m going to show you.
Latest trend of research 5
Pusan National University, Pusan Clean Coal Center

8. Survey of efficiency
Thermal efficiencies of combined SOFC-GT in past literature.
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Source : Application of solid oxide fuel cell technology for power generation – A review
Pusan National University, Pusan Clean Coal Center

9. Optimum configuration of
Research objective
Studying various configuration of SOFC/GT cycle
Internal
reforming
External
reforming vs
Optimum configuration of
SOFC/GT system
With
HRSG
With
anode recirculation vs
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Pressurized
system
Ambient
system vs
Pusan National University, Pusan Clean Coal Center

10. Contents Research background 1 Research objective 2 Analysis of cycles3
Analysis of cycles
Conclusions 4
This is procedure of contents I`m going to show you.
Latest trend of research 5
Pusan National University, Pusan Clean Coal Center

11. Internal reforming vs External reforming
Schematic diagrams and efficiencies
internal reforming
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
external reforming
Source : Yang WJ, Park SK, Kim TS, Kim JH, Sohn JL, Ro ST. Design performance analysis of pressurized solid oxide fuel cell/gas turbine hybrid systems considering temperature
constraints. J Power Sources 2006;160:462-73
Pusan National University, Pusan Clean Coal Center

12. HRSG vs Anode recirculation
Schematic diagrams and efficiencies (internal reforming fixed)
With HRSG(a)
With anode recirculation(b)
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Vs(Volt)
Energy efficiency
Exergy efficiency
(a)
0.83
0.78
0.77
(b)
0.82
0.81
(O2 flow rate : 1.2mol/s , fraction of oxygen oxidized with fuel : 80%)
Source : Granovskii M, Dincer I, Rosen MA. Performance comparison of two combined SOFC gas turbine systems. J Power Sources 2007;165:307-14
Pusan National University, Pusan Clean Coal Center

13. Pressured system vs Ambient system
Schematic diagrams and efficiencies
(internal reforming, anode recirculation fixed)
pressured system
ambient system
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Source : Park SK, Kim TS. Comparison between pressurized design and ambient pressure design of hybrid solid oxide fuel cell gas turbine systems. J Power Sources 2006;163:490-9
Pusan National University, Pusan Clean Coal Center

14. Contents Research background 1 Research objective 2 Analysis of cycles3
Analysis of cycles
Conclusions 4
This is procedure of contents I`m going to show you.
Latest trend of research 5
Pusan National University, Pusan Clean Coal Center

15. Optimum configuration of
Conclusions
Selection of system which has better efficiency
Optimum configuration of
SOFC/GT system
Internal
reforming
With
anode recirculation
Pressurized
system
Optimum configuration
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Pusan National University, Pusan Clean Coal Center

16. Contents Research background 1 Research objective 2 Analysis of cycles3
Analysis of cycles
Conclusions 4
This is procedure of contents I`m going to show you.
Latest trend of research 5
Pusan National University, Pusan Clean Coal Center

17. Latest trend of research
Proto-type of SOFC/GT system(1) (Siemens-Westinghouse, 2001)
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Source : 220kWe solid oxide fuel cell/microturbine generator hybrid proof of concept demonstration report. In: Commission CE, editor; March 2001
Pusan National University, Pusan Clean Coal Center

18. Latest trend of research(추가내용)
Proto-type of SOFC/GT system(2) (Mitsubishi Heavy Industries, 2008)
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Source : Gengo T. Kobayashi Y, Ando Y, Hisatome N, Kabata T, Kosaka K. Development of 200kW class SOFC combined cycle system and future view. Technical review. Mitsubishi Heavy Industries.Ltd.; p. 45.
Pusan National University, Pusan Clean Coal Center

19. Latest trend of research(추가내용)
Proto-type of SOFC/GT system(3) (KIER, 2008)
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Source : Lim T-H, Song R-H, Shin D-R, Yang J-I, Jung H, Vinke IC, et al. Operating characteristics of a 5 kW class anode-supported planar SOFC stack for a fuel cell/gas turbine hybrid system. Int J Hydrogen Energy 2008;33:
Pusan National University, Pusan Clean Coal Center

20. Latest trend of research
High temperature SOFC`s demand
Specialized and expensive materials for the SOFCs` interconnects and insulation
and for the fabrication of ceramic structures.
Significant time and energy to heat up the SOFCs to such operating temperatures
Development of novel electrolytes, anode supported cells, higher-performance cathodes, higher-conductivity electrolytes, and fabrication techniques.
development of SOFCs able to provide reasonable power output at lower temp.
Please look at this picture. This is about suicide rate of main countries in OECD. This figure is the number of people done suicide per one hundred thousand people. As you see, from 2000, suicide rate of almost countries except Korea have been decreasing. In addition, Korea is at 1st rank in this statistics over than 10years. Due to this problem, ministry of health & welfare of Korea is trying to solve this problem.
Fabricating anode substrates : tape-casting, extrusion molding, and slip casting.
Pusan National University, Pusan Clean Coal Center

21. Thank you.
Q & A