Reduced-scale model study of ventilation for large space of generatrix floor in HOHHOT underground hydropower station
Reduced-scale model study of ventilation for large space of generatrix floor in HOHHOT underground hydropower station
复制标题
呼和浩特地下水电站母线底板大空间通风缩比模型研究
DOI：
10.1016/j.enbuild.2010.12.026
复制
发表时间：
2011-04-01
影响因子：
6.7
通讯作者：
Wang, Jianming
中科院分区：
文献类型：
--
作者：
Li, Angui;Liu, Zhijian;Wang, Jianming
采用1：20缩尺模型对呼和浩特抽水蓄能地下电站母线层两种送风方式的气流组织效果进行了研究。在48种不同的工况下，对6种工况进行了一系列试验（包括温度和风速）。根据不均匀系数和能效系数原理，通过计算无因次温度和无因次速度来评价气流组织。结果表明，机械送风方式优于垂直压差送风方式，具有上级优点。在机械送风方式下，确定了最佳送风量和工况。在最佳送风工况下，改变热源（50%Q、75%Q、100%Q和125%Q）对气流组织影响不大，验证了通风的有效性和可靠性。实验结果对复杂热源大空间的通风优化设计具有一定的指导意义。(C)2010 Elsevier B.V.保留所有权利。
A research project was undertaken on 1:20 reduced-scale model to investigate the air distribution effectiveness in two supply air modes in the generatrix floor in HOHHOT pumped-storage underground hydropower station. A series of tests (including temperature and air velocity) for 6 cases were performed in 48 various operating conditions. The air distribution was evaluated on the basis of non-uniform coefficient and energy efficiency coefficient principle by calculating dimensionless temperature and the dimensionless velocity. The results showed that mechanical air supply was superior to vertical pressure-gradient air supply. In the mode of mechanical air supply, the best supply air rate and case were determined. Moreover, changing heat sources (50%Q, 75%Q, 100%Q and 125%Q) had little effect on the air distribution in the best supply air case, which verified ventilation effectiveness and reliability. The experimental findings were useful for optimizing the ventilation design in a large space with complex heat sources. (C) 2010 Elsevier B.V. All rights reserved.