TY - JOUR
T1 - Predicting the ultimate potential of natural gas SOFC power cycles with CO2 capture – Part A
T2 - Methodology and reference cases
AU - Campanari, Stefano
AU - Mastropasqua, Luca
AU - Gazzani, Matteo
AU - Chiesa, Paolo
AU - Romano, Matteo C.
PY - 2016/8/30
Y1 - 2016/8/30
N2 - Driven by the search for the highest theoretical efficiency, in the latest years several studies investigated the integration of high temperature fuel cells in natural gas fired power plants, where fuel cells are integrated with simple or modified Brayton cycles and/or with additional bottoming cycles, and CO2 can be separated via chemical or physical separation, oxy-combustion and cryogenic methods. Focusing on Solid Oxide Fuel Cells (SOFC) and following a comprehensive review and analysis of possible plant configurations, this work investigates their theoretical potential efficiency and proposes two ultra-high efficiency plant configurations based on advanced intermediate-temperature SOFCs integrated with a steam turbine or gas turbine cycle. The SOFC works at atmospheric or pressurized conditions and the resulting power plant exceeds 78% LHV efficiency without CO2 capture (as discussed in part A of the work) and 70% LHV efficiency with substantial CO2 capture (part B). The power plants are simulated at the 100 MW scale with a complete set of realistic assumptions about fuel cell (FC) performance, plant components and auxiliaries, presenting detailed energy and material balances together with a second law analysis.
AB - Driven by the search for the highest theoretical efficiency, in the latest years several studies investigated the integration of high temperature fuel cells in natural gas fired power plants, where fuel cells are integrated with simple or modified Brayton cycles and/or with additional bottoming cycles, and CO2 can be separated via chemical or physical separation, oxy-combustion and cryogenic methods. Focusing on Solid Oxide Fuel Cells (SOFC) and following a comprehensive review and analysis of possible plant configurations, this work investigates their theoretical potential efficiency and proposes two ultra-high efficiency plant configurations based on advanced intermediate-temperature SOFCs integrated with a steam turbine or gas turbine cycle. The SOFC works at atmospheric or pressurized conditions and the resulting power plant exceeds 78% LHV efficiency without CO2 capture (as discussed in part A of the work) and 70% LHV efficiency with substantial CO2 capture (part B). The power plants are simulated at the 100 MW scale with a complete set of realistic assumptions about fuel cell (FC) performance, plant components and auxiliaries, presenting detailed energy and material balances together with a second law analysis.
KW - CO capture
KW - High efficiency
KW - Hybrid cycle
KW - Natural gas
KW - SOFC power cycle
UR - http://www.scopus.com/inward/record.url?scp=84989961818&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2016.05.104
DO - 10.1016/j.jpowsour.2016.05.104
M3 - Article
AN - SCOPUS:84989961818
SN - 0378-7753
VL - 324
SP - 598
EP - 614
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -