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对映秀湾水电站无压尾水洞引风过程中的室外空气温湿度、尾水洞出口空气温湿度、尾水进出口温度、引风量等参数进行了测试。测试结果表明,夏季运行时无压尾水洞对引入空气有良好的降温除湿效果;在无压尾水洞足够长的条件下,尾水洞末端引风参数主要受尾水温度的影响,而受室外空气参数的影响很小,尾水洞出口空气接近对应尾水温度的饱和状态。
The temperature and humidity of outdoor air, the temperature and humidity of outlet air at the outlet tunnel, the inlet and outlet temperature of the tail water, the amount of induced draft and so on were tested on the induced draft of the non-pressured tail tunnel of Yingxiuwan Hydropower Station. The test results show that the pressureless tailwater tunnel has a good cooling and dehumidification effect on the introduced air during the summer operation. Under the condition of long enough pressureless tailrace, the induced draft parameter at the end of the tailwater tunnel is mainly affected by the temperature of the tailwater. Affected by outdoor air parameters, the tail air outlet air is close to the saturated state corresponding to the tail water temperature.