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 2016. 06. 13 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.

Contents Research background 1 Research objective 2 Analysis of cycles 3 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

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

Introduction of SOFC Basic of Solid Oxide Fuel Cell Cathode Anode Overall Source : https://protonex.com/blog/fuel-cell-differences-pem-and-sofc/ 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, 1993. p. 419. Pusan National University, Pusan Clean Coal Center

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

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;36:10337-45 Pusan National University, Pusan Clean Coal Center

Contents Research background 1 Research objective 2 Analysis of cycles 3 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

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

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

Contents Research background 1 Research objective 2 Analysis of cycles 3 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

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

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

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

Contents Research background 1 Research objective 2 Analysis of cycles 3 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

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

Contents Research background 1 Research objective 2 Analysis of cycles 3 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

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

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.; 2008. p. 45. Pusan National University, Pusan Clean Coal Center

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;33:1076-83 Pusan National University, Pusan Clean Coal Center

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

Thank you. Q & A