Full
Outline
To address the issue of inadequate cooling capacity of mechanical ventilation air-cooled towers during the summer season, a kind of mechanical ventilation cooling tower with dry and wet combined ventilation is proposed, and the variation rules of water temperature and evaporation of cooling tower under 3 groups of circulating water flow, 2 groups of inlet water temperature and 2 groups of fan frequency are studied experimentally. It has been discovered that a decrease in circulating water temperature is correlated with an increase in circulating water flow rate and a decrease in both inlet water temperature and fan frequency. When the inlet water temperature of the tower is 40 ℃ and the fan frequency is 35 Hz, the circulating water temperature drop of the combined dry and wet mechanical ventilation cooling tower is 4.74, 3.95, 3.56 ℃ when the circulating water flow rate is 30, 45, 60 m3/h, respectively. Compared with the mechanically ventilated air cooling tower (the circulating water temperature drop is 2.22, 1.50, 1.05 ℃ respectively), the water temperature drop is further reduced by 2.52, 2.45, 2.51 ℃. The water evaporation of different circulating water flow rates is 0.098, 0.106, 0.142 kg/s, respectively. It can be seen that the dry and wet combined mechanical ventilation cooling tower can further reduce the water temperature out of the air-cooling tower with the help of a small amount of water evaporation, which helps to improve the cooling capacity of the air-cooling tower in the summer high temperature period, and the research results can provide theoretical guidance for energy saving and efficiency improvement of air cooling tower.
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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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