ZHOU Lanxin, WU Ruikang, DING Binkai, et al. Numerical study on a natural draft wet cooling tower with central catheter pipes[J]. Thermal power generation, 2014, 43(7): 27-31.
ZHOU Lanxin, WU Ruikang, DING Binkai, et al. Numerical study on a natural draft wet cooling tower with central catheter pipes[J]. Thermal power generation, 2014, 43(7): 27-31.DOI:
自然通风湿式冷却塔加装中央补风管的数值研究
摘要
针对现有冷却塔中央区域换热效果差的问题
提出了在塔内加装中央补风管的方案。将空气直接送入冷却塔中心区域
加强塔内换热。以某1 000MW机组冷却塔为例
采用Fluent软件建立冷却塔三维热力性能计算模型。计算结果表明
加装补风管后冷却塔出塔水温比改造前平均降低0.433℃
机组发电量增加2~3MW。
Abstract
Aiming at enhancing heat transfer in central area of the present cooling towers
new scheme that installing central catheter pipes in the tower was put forward.In this scheme
the fresh air is directly transported to central area of the cooling tower to enhance the heat and mass transfer.Taking a natural draft wet cooling tower for a 1 000MW unit as the example
its three-D thermal performance calculation model was established by the FLUENT software.The analysis show that
after the catheter pipes were installed
the outlet water temperature of the cooling tower dropped by an average of 0.433℃
and the unit power generation increased by 2to 3MW.