配水方式对冷却塔热力性能的影响研究  

Study on influence of water distribution mode on thermal performance of cooling tower

作　　者：张爱军 宋小军[2] 刘涛 朱晴 马志伟 李陆军[2] ZHANG Aijun;SONG Xiaojun;LIU Tao;ZHU Qing;MA Zhiwei;LI Lujun(Northwest Electric Power Design Institute Co.,Ltd.of CPECC,Xi’an 710075,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]中国电力工程顾问集团西北电力设计院有限公司,陕西西安710075 [2]中国水利水电科学研究院,北京100038

出　　处：《中国水利水电科学研究院学报（中英文）》2024年第4期353-360,共8页Journal of China Institute of Water Resources and Hydropower Research

基　　金：国家自然科学基金项目(51909278)。

摘　　要：为了研究电厂在调峰影响下低负荷运行时合理的配水方式,探寻冷却塔“带水”检修的可能性,采用三维数值模拟方法,计算了某高位收水冷却塔两机六泵全塔配水、一机三泵全塔外围配水和一机三泵半塔配水方式下的塔内外流场特性及热力性能。分析了外围配水和半塔配水可能存在的进塔空气全部从未淋水区域的填料流过而不与淋水填料换热的问题,并统计了配水方式对冷却能力的影响。结果表明,外围配水、半塔配水虽然不存在进塔空气全部从未淋水区域的填料流过的情况,但分区配水热力性能易受到环境风影响,在改善电厂调峰低负荷运行条件下的冷却塔热力性能方面起负面效果。In order to study the reasonable water distribution mode of a power plant under the influence of peak load regulation and explore the possibility of“with water”maintenance of cooling tower,the characteristics of the internal and external field and the thermal performance of a cooling tower were calculated by three-dimensional numerical simulation method,which includes two units with six pumps distribute water to whole fill,one units with three pumps distribute water to peripheral fill and one units with three pumps distribute water to half fill.The subject that the air may flow through the unwatered fill when distribute water to peripheral fill and half fill was analyzed,and the effect of the water distribution method on the cooling capacity was calculated.The results show that although there is no air flow through the unwatered fill in the peripheral fill distribution and the half fill water distribution,the thermal performance of the zonal water distribution is easily affected by the crosswind,which has a negative effect on improving the thermal performance of the cooling tower under the operation condition of peaking and low load.

关 键 词：高位收水冷却塔 热力性能 环境风 分区配水 数值模拟 

分 类 号：TM621[电气工程—电力系统及自动化]