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The online monitoring methods for carbon emissions of domestic coal-fired power units in the short and medium term are still mainly based on accounting methods, and the online monitoring methods for carbon emissions are not yet fully developed. An online carbon emission accounting method for large coal-fired power plants is explored based on routine monitoring data from the units’ fuel management system, leading to the formation of a rapid carbon emission accounting method. Additionally, five direct online monitoring approaches for carbon emissions are designed to measure volume fraction, flow velocity and humidity of CO2. Building upon the rapid accounting method, the calculation deviations of different carbon emission calculation methods within different calculation periods are compared. The results show that, as the time span of the calculation period increases, the calculation deviations for carbon emissions tend to stabilize. Results from a 60-day monitoring period indicate that the computational deviations for the system method, monitoring method, modified monitoring method, oxygen balance method, modified oxygen balance method, and calorific value method are –11.5%, 7.7%, 4.6%, 9.7%, 7.1%, and 17.0%, respectively. After long-term comparative corrections, all these methods are viable for online monitoring of carbon emissions from coal-fired power plants, providing support for managing and controlling carbon emissions and carbon asset management within these facilities.
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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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