TY - JOUR
T1 - Combinations of solid oxide fuel cell and several enhanced gas turbine cycles
AU - Kuchonthara, Prapan
AU - Bhattacharya, Sankar
AU - Tsutsumi, Atsushi
PY - 2003/10/1
Y1 - 2003/10/1
N2 - Combined power generation systems with combinations of solid oxide fuel cell (SOFC) and various enhanced gas turbine (GT) cycles were evaluated. In the GT part, steam injected gas turbine (STIG) cycle, GT/steam turbine (ST) combined cycle, and humid air turbine (HAT) cycle were considered. Moreover, additional recuperation was considered by means of air preheating (APH) in the STIG cycle. Effects of operating turbine inlet temperature (TIT) and pressure ratio (PR) on overall system performance were assessed. Although the SOFC-HAT system shows the lowest specific work output compared to other systems, its highest thermal efficiency presents a significant advantage. Furthermore, at high TITs and PRs the SOFC-HAT system gives the best performance in terms of both thermal efficiency and specific work. Results indicate that energy recuperative features in the HAT promote the positive effect of increasing TIT by means of enhancing GT efficiency, leading to the improvement in thermal efficiency of the overall system.
AB - Combined power generation systems with combinations of solid oxide fuel cell (SOFC) and various enhanced gas turbine (GT) cycles were evaluated. In the GT part, steam injected gas turbine (STIG) cycle, GT/steam turbine (ST) combined cycle, and humid air turbine (HAT) cycle were considered. Moreover, additional recuperation was considered by means of air preheating (APH) in the STIG cycle. Effects of operating turbine inlet temperature (TIT) and pressure ratio (PR) on overall system performance were assessed. Although the SOFC-HAT system shows the lowest specific work output compared to other systems, its highest thermal efficiency presents a significant advantage. Furthermore, at high TITs and PRs the SOFC-HAT system gives the best performance in terms of both thermal efficiency and specific work. Results indicate that energy recuperative features in the HAT promote the positive effect of increasing TIT by means of enhancing GT efficiency, leading to the improvement in thermal efficiency of the overall system.
KW - Combined cycle
KW - Gas turbine
KW - HAT cycle
KW - Power generation systemLHV
KW - Solid oxide fuel cell
UR - http://www.scopus.com/inward/record.url?scp=0041829090&partnerID=8YFLogxK
U2 - 10.1016/S0378-7753(03)00740-7
DO - 10.1016/S0378-7753(03)00740-7
M3 - Article
AN - SCOPUS:0041829090
SN - 0378-7753
VL - 124
SP - 65
EP - 75
JO - Journal of Power Sources
JF - Journal of Power Sources
IS - 1
ER -
