特高压柔直阀厅空调喷口侧送气流组织模拟及优化  

Simulation and Optimization of Airflow Organization from Nozzle Side of Air Conditioning in UHV Flexible DC Valve Hall

作　　者：何娜萍 肖国锋 林雪 张宇峰[2] HE Naping;XIAO Guofeng;LIN Xue;ZHANG Yufeng(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,China;South China University of Technology,School of Architecture,Guangzhou 510663,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510663 [2]华南理工大学建筑学院,广东广州510641

出　　处：《南方能源建设》2022年第1期86-95,共10页Southern Energy Construction

基　　金：“十三五”国家重点研发计划“建筑节能设计基础参数研究”(2018YFC0704500)。

摘　　要：[目的]特高压柔直阀厅具有高度高、体积大、设备发热量大等特点,阀厅内空调送风方式可显著影响室内温度场、风速场、压力场,研究其送风方式对于保证阀厅内发热设备的正常运行至关重要。[方法]使用Ansys Fluent 19.2对球形喷口水平侧送方式下的阀厅进行模拟仿真,分析其温度场、风速场、压力场存在的问题。本次研究设置三种送风角度:i=10°、i=20°、i=30°,通过更改送风角度来改善温度场、风速场、压力场。[结果]球形喷口水平侧送情况下,阀厅内空气平均温度为30.30℃,阀体表面平均温度、最高温度、最低温度分别为52.91℃、62.93℃、43.55℃,阀体表面存在局部高温;i=30°时室内空气平均温度最低为30.27℃,阀体周围静风区较少,在四种送风角度下阀体表面最高温度的下限为61.66℃;i=10°、20°时,阀厅内空气平均温度分别为30.40℃、30.45℃,这两种送风角度下阀体表面最高温度均超过63℃。[结论]特高压柔直阀厅夏季球形喷口送风最佳倾角为30°。[Introduction] The ultra-high voltage flexible DC valve hall has the characteristics of high height, large volume, and large heat generation of equipment. The air supply mode of the air conditioning in the valve hall can significantly affect the indoor temperature field, wind speed field, and pressure field. It is very important to study the air supply mode of air conditioning in valve hall to ensure the normal operation of heating equipment in valve hall. [Method] Ansys Fluent 19. 2, a CFD simulation software, was used to simulate the valve hall in the horizontal side air supply mode of the spherical nozzle, and the problems in the temperature field, wind speed field and pressure field were analyzed. And they were improved by changing the air supply angle. In this study,three kinds of air supply angles were set for simulation : i=10°, i=20°, i=30°. [Result] In the case of the horizontal side air supply mode of the spherical nozzle, the average temperature of the air in the valve hall is 30. 30 ℃, and the average temperature, maximum temperature, and minimum temperature of the valve body surface are 52. 91 ℃, 62. 93 ℃, 43. 55 ℃ respectively. There is local high temperature on the valve body surface. When i=30°, the lowest average indoor air temperature is 30. 27 ℃, and there is less static air area around the valve body. The lower limit of the maximum surface temperature of the valve body at four air supply angles is61. 66 ℃;when i=10° and 20°, the average air temperature in the valve hall is respectively 30. 40 ℃, 30. 45 ℃, the highest temperature of the valve body surface at these two air supply angles exceeds 63 ℃. [Conclusion] The best inclination angle of the spherical nozzle air supply in summer in the UHV flexible DC valve hall is 30°.

关 键 词：特高压 柔直阀厅 球形喷口 送风角度 CFD模拟 

分 类 号：TM7[电气工程—电力系统及自动化] TU831[建筑科学—供热、供燃气、通风及空调工程]