无压尾水洞引风喷淋串联空气处理系统特性研究

为突破尾水洞长度对无压尾水洞引风技术应用的限制,拓展其应用范围,提出采用低温尾水对无压尾水洞引风进行喷淋的串联空气处理系统,建立了顺流与逆流式喷淋系统的数学模型并得出模型的解析解,分析了引风量、喷水系数、喷水压力及喷淋装置位置对串联系统运行特性的影响.研究结果表明,在无压尾水洞引风喷淋串联系统中,采用无压尾水洞优先处理模式及增加喷水系数有利于提高串联系统的空气热湿处理效果,而引风量及喷水压力对串联系统的运行特性影响较小.

Performance of Series Air-handling System of Spray and Tailrace Tunnel Ventilation

In order to break through the restriction of tunnel length on the application of tailrace tunnel ventilation technology and extend the technology application scope, a series air-handling system of spraying the tailrace tunnel ventilation with low-temperature water is presented. The mathematical models of the counter and concurrent flow spray systems are established and the analytical solutions are derived. The influences of ventilation rate, spray coefficient, water jet pressure and the location of spray device on the operation performances of the series air-handling system are analyzed. The results indicate that it is useful to improve the heat and moisture treatment of the series air-handling system by using the priority air-handling mode of tailrace tunnel ventilation and increasing the spray coefficient, and the ventilation rate and water jet pressure have the less influence on the operating performance of the series air-handling system.