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Outline
To improve the efficiency of biogas power generation system, this paper proposes a biogas power generation system based on solid oxide fuel cell (SOFC). A model of the biogas SOFC power generation system is established, and the effects of fuel utilization rate, water-to-carbon ratio, methane content in biogas, and oxygen content in biogas on system's power generation performance are analyzed. The results show that: when the methane content in biogas is 70% and the carbon dioxide content in biogas is 30%, the power generation efficiency of the system can reach 47.8%; increasing the fuel utilization will increase both the system's power output and efficiency; reducing the water -to -carbon ratio will increase the system's power outputbut also raise the risk of carbon deposition; higher methane content in the biogas leads to higher power output, though with a slight decrease in efficiency. A small amount of oxygen in the biogas does not compromise the safety of SOFC anode material and has minimal impact on the system's power generation efficiency.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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