热力发电2018，Vol.47Issue(3)：82-87,93,7.DOI:10.19666/j.rlfd.201707074
冷却塔填料布置方式对热力性能的影响
Impact of non-uniform fill layouts of the cooling tower on thermal performance
摘要
Abstract
Compared with uniform fill layouts,non-uniform fill layouts show an improvement on the performance of the cooling tower.In order to investigate the influence of fill layouts on thermal performance and drag characteristic of the cooling tower,based on the original fill layouts of equal height and equal interval,optimization design of unequal height and unequal interval was carried out on the filler of the cooling tower.The three-dimensional numerical models of three kinds of fill layouts were established to compare their performance under different working conditions.Then,four typical operating conditions in practice running were selected to compare the numerical simulation results and the measured data.The results show that,compared with the uniform fill layouts,both the unequal interval fill layouts and the unequal height fill layouts can improve the heat transfer performance of the cooling tower,which make the temperature drop increased by 0.7～1.0 ℃.Besides,compared with the unequal height fill layouts,the unequal interval fill layouts not only improve the cooling effect of the outside region of the cooling tower,but also significantly enhance the cooling performance of the central area of the cooling tower.Integrate various working conditions,the temperature drop of the unequal interval fill layouts increases by about 0.2 ℃ compared with the unequal height fill layouts.In addition,the numerical simulation results are consistent with the experimental data and both have the same trends.It indicates that the numerical simulation can reflect the actual operation of the cooling tower,and can be used to guide the design of the fill layouts.关键词
冷却塔/淋水填料/均匀布置/不等间距布置/不等高布置/温降/数值模拟Key words
cooling tower/cooling fillers/uniform layout/unequal interval layout/unequal height layout/temperature drop/numerical simulation分类
能源科技引用本文复制引用
王明勇,栾俊,刘江..冷却塔填料布置方式对热力性能的影响[J].热力发电,2018,47(3):82-87,93,7.基金项目
中国华能集团公司总部科技项目(HNKJ15-H09)Science and Technology Project of China Huaneng Group (HNKJ15-H09) （HNKJ15-H09）
