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The deicing effect of wind turbine blades was tested and analyzed based on the air-thermal method. The thermal conductivity efficiency of the paving structure and the influence of blower speed (or frequency) on the deicing efficiency were mainly considered. Firstly, the blade structure and layering structure were introduced, and the thermal conductivity was estimated by measuring the thickness of the layering structure. According to the ice-covered position of the blade in winter, the rationality of the thermal conductivity distribution of the blade during air-thermal deicing was verified. After that, the field blade deicing test was carried out by changing the speed (or frequency) of the blower. The test results reveal the root cause of the unbalanced deicing phenomenon in the process of wind turbine blade deicing by air thermal deicing system. It shows that the higher the speed (or frequency) of the blower is, the better the deicing equilibrium of the blade surface and the more significant the deicing effect are under the premise of ensuring the temperature stability of the outlet of the ventilation pipe. In addition, with the use of larger blower frequency, the internal circulation of the blade was enhanced, and the reasonable setting of the internal circulation structure of the blade can effectively improve the de-icing efficiency and reduce the de-icing consumption time.
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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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