地下水电站廊道引风通风方案的理论计算与数值分析

Theoretical Calculation and Numerical Analysis of the Air Induction Ventilation Scheme for Groundwater Power Station Corridor

在地下水电站能源消耗过程中,通风系统能耗占比较大。利用土壤蓄冷蓄热通过地下廊道对室外进风进行降温、加热处理的方法,在水电站通风方案中经常被采用。以东庄水电站为例,对采用廊道引风的通风方案进行系统的理论计算与数值分析。结果表明,地下水电站的进风廊道壁温具有稳定性,通过充分利用土壤的蓄冷蓄热能力,送风系统可为电站厂房提供舒适的工作环境。利用廊道进风的系统简单、节能投资低,有很好的经济效益和社会效益。计算与分析结果可为下一步东庄水电站坝体廊道通风效果的模拟提供依据。

During the energy consumption process of groundwater power stations,the energy consumption of ventilation systems accounts for a large proportion.The method of cooling and heat-treating the outdoor air intake through the underground corridor through the use of soil cold storage and heat storage is often adopted in the ventilation scheme of the hydro-power station.Taking the Dongzhuang Hydro-power Station as an example,the theoretical calculation and numerical analysis of the ventilation scheme using the corridor induced wind are carried out.The results show that the wall temperature of the inlet gallery of the groundwater power station is stable.By making full use of the cold storage capacity of the soil,the air supply system of the underground power station can provide a comfortable working environment for the power plant and achieve energy saving.And the system that uses the corridor to enter the wind is simple,reduces the investment,and has good economic and social benefits.The results can provide a basis for the simulation of the ventilation effect of the dam body corridor of the Dongzhuang Hydro-power Station.