Economic analysis of combined cycle biomass gasification fuelled SOFC Systems
This paper presents a cost modeling approach and the economic feasibility for a selected plant configuration operating under three modes; air gasification, mixed air-steam gasification, and steam gasification combined cycle SOFC (solid oxide fuel cell) systems. In this study two cases of biomass gasification fuelled SOFC-Gas turbine with HRSG hybrid configuration (case 1) is compared with biomass gasification fuelled SOFC-Steam turbine cycle (case2) are compared for biomass feed stock. For the case of steam, mixed air-steam and air gasification systems, the cost for the steam gasification system is shown to be highest as compared to the mixed airsteam gasification system and the air gasification system due to the higher hydrogen production as compared to air and mixed air-steam gasification systems. Other than the SOFC and gasification costs, a significant cost towards the heat exchangers is about 15 to 20％ of the total purchase cost. The specific plant cost for the air gasification varied from the 16,600 USS/kW to 19.200 USS/kW. For the case of Biomass gasification-fuelled SOFC-GT configuration, the major cost portions are shared by the SOFC, HRSG and gasifier. The HRSG equipment shared a cost portion of 25 to 30％ for all the operating modes. The cost is decreased in the similar trend as that of steam, mixed air-steam and air gasification systems. For the case of Biomass gasification fuelled SOFC-ST configuration, the total purchase cost decreases at a rate of 15 to 20％ for mixed air steam and air gasification system. Plant specific cost for the steam gasification mode varied from 15200 to 17200 US $/kV which is significantly very high.
Gasification SOFC combined cycle cost modeling economic analysis
Rajesh S. Kempegowda Khanh-Quang Trari 0yvind Skreiberg
Dept of Energy & Process Engineering,NTNU, Trondheim, Norway SINTEF Energy Research, Trondheim, Norway
国际会议
2011 International Conference on Future Environment and Energy(ICFEE 2011)(2011年未来环境与能源大会)
三亚
英文
134-141
2011-03-25（万方平台首次上网日期，不代表论文的发表时间）