TY - JOUR
T1 - High-efficiency conversion of natural gas fuel to power by an integrated system of SOFC, HCCI engine, and waste heat recovery
T2 - Thermodynamic and thermo-economic analyses
AU - Zhu, Pengfei
AU - Yao, Jing
AU - Qian, Chenhui
AU - Yang, Fusheng
AU - Porpatham, Ekambaram
AU - Zhang, Zaoxiao
AU - Wu, Zhen
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/9/1
Y1 - 2020/9/1
N2 - A novel natural gas utilization system for power generation including solid oxide fuel cell (SOFC) and homogeneous charge compression ignition (HCCI) engine is proposed and modeled to evaluate the thermodynamic and thermo-economic performance in this paper. The results show that the SOFC-HCCI engine hybrid system has a net electrical efficiency of approximately 59% and the exergy efficiency of 53.5%, both of which are more than single fuel cell system and comparable to other hybrid fuel cell systems. It is also found that the SOFC contributes to the total power of 80% and has a relatively low exergy destruction. Through the parametric analysis, the power distribution between SOFC and engine can be adjusted by controlling SOFC fuel utilization to optimize the system overall performance. Besides, the specific electric energy cost of the proposed hybrid system is calculated to be 6.91 ¢/kW h, which is comparable to the specific cost of electric power (6.92 ¢/kW h) generating from a biogas-fueled fuel cell hybrid system. The payback period and annual return on investment can reach 1.53 year and about 6.41%. These results reveal that the proposed conversion technology of natural gas fuel to power is efficient and economical, which could be a promising natural gas fuel utilization.
AB - A novel natural gas utilization system for power generation including solid oxide fuel cell (SOFC) and homogeneous charge compression ignition (HCCI) engine is proposed and modeled to evaluate the thermodynamic and thermo-economic performance in this paper. The results show that the SOFC-HCCI engine hybrid system has a net electrical efficiency of approximately 59% and the exergy efficiency of 53.5%, both of which are more than single fuel cell system and comparable to other hybrid fuel cell systems. It is also found that the SOFC contributes to the total power of 80% and has a relatively low exergy destruction. Through the parametric analysis, the power distribution between SOFC and engine can be adjusted by controlling SOFC fuel utilization to optimize the system overall performance. Besides, the specific electric energy cost of the proposed hybrid system is calculated to be 6.91 ¢/kW h, which is comparable to the specific cost of electric power (6.92 ¢/kW h) generating from a biogas-fueled fuel cell hybrid system. The payback period and annual return on investment can reach 1.53 year and about 6.41%. These results reveal that the proposed conversion technology of natural gas fuel to power is efficient and economical, which could be a promising natural gas fuel utilization.
KW - Exergetic analysis
KW - Hybrid power system
KW - Solid oxide fuel cell
KW - Thermo-economic analysis
KW - Thermodynamic modeling
UR - https://www.scopus.com/pages/publications/85083573184
U2 - 10.1016/j.fuel.2020.117883
DO - 10.1016/j.fuel.2020.117883
M3 - 文章
AN - SCOPUS:85083573184
SN - 0016-2361
VL - 275
JO - Fuel
JF - Fuel
M1 - 117883
ER -