水电站无压尾水洞引风过程热工计算方法

Thermodynamic calculation method of tailrace tunnel ventilation process in hydropower stations

在水电站无压尾水洞引风热湿交换过程简化模型基础上,提出了无压尾水洞引风有效作用长度的概念,建立了热湿交换过程的热工计算方法,包括引风沿程空气参数、引风热湿交换量及引风有效作用长度等热工参数的计算,并利用现场测试数据对该方法进行了验证。应用该方法对映秀湾水电站无压尾水洞引风系统连续6d运行的热工参数进行了计算与分析,得到了其变化规律。

Based on a simplified model of heat and moisture transfer process in tailrace tunnel ventilation, introduces the concept of effective length of tailrace tunnel ventilation, and establishes a thermodynamic calculation method of heat and moisture transfer process, including the calculation of air parameters during the process, quantity of heat and moisture transferred and the effective length of the tunnel, and validates it by the field test data. By the method calculates and analyses the thermodynamic parameters when the tailrace tunnel ventilation system continuously operates for six days in Yingxiuwan hydropower station, and obtains the variation rule of these parameters.