| 초록 |
An oxy-fuel circulating fluidized bed combustor integrated with supercritical carbon dioxide cycle fuelled by biomass has been proposed and evaluated for energy efficiency and carbon dioxide emission reduction. This paper presents the thermodynamic analysis for proposed system utilizing domestic waste biomass resources (waste paper, waste wood and cow manure) using Aspen Plus and related techno-economic analysis. The performance of each raw biomass was investigated within the excess oxygen ratio ranged between 0.97 and 1.05. Maximum net efficiency was observed at excess oxygen ratio of 1.01 for all biomasses with recorded value of 35.76% for waste paper, 27.74% for waste wood, and 31.12% for cow manure. Waste paper showed the lowest levelized cost of electricity of 0.0596 $/kWh, followed by waste wood (0.06652 $/kWh) and cow manure (0.06417 $/kWh). The economic feasibility analysed with waste wood showed a positive net present value of 8.5355 M$ while waste wood and cow manure showed negative net present value of 12.8835 M$ and 6.075 M$ respectively. The feasibility result showed that the investment of proposed cycle fuelled by waste wood will be profitable. |
