障碍物对中央空调冷却塔群气流影响模拟  

Influence of Obstacles on Air Flow of Central Air-conditioning Cooling Towers

作　　者：张炳晴 邓亚宏 李昌 伍学智 钟剑 姜昌伟[1] ZHANG Bingqing;DENG Ya-hong;LI Chang;WU Xuezhi;ZHONG Jian;JIANG Chang-wei(College of Energy and Power Engineering, Changsha University of Science and Technology;Second Construction Engineering Co. Ltd, Bureau 3 of CSCEC)

机构地区：[1]长沙理工大学能源与动力工程学院 [2]中建三局第二建设工程有限责任公司

出　　处：《建筑热能通风空调》2018年第12期73-76,37,共5页Building Energy & Environment

摘　　要：为了研究障碍物对冷却塔气流热湿传递的影响,以障碍物影响下的强制通风冷却塔群为研究对象,采用空气和水的连续性方程,动量方程,能量方程和含湿量方程数值模拟了冷却塔群气流热湿传递规律。研究了障碍物高度,冷却塔与障碍物间距离及导风筒对冷却塔气流热湿传递规律的影响。结果表明:冷却塔没有安装导风筒时平均含湿量和平均返混率随着障碍物高度的增加而增加,随着障碍物距离的增加而减小。安装导风筒后平均含湿量和平均返混率明显降低。To study the influence of obstacles on the heat and moisture transfer of the cooling tower,a cooling tower with forced ventilation under a row of obstacles was taken as the research object,and the law of heat and moisture of cooling towers has been investigated using the continuity,momentum,energy and moisture fraction equations.The influence of the height of obstacle,the distance between the cooling tower and the obstacle and air guide on the heat and humidity transfer of the air flow in the cooling tower has been studied.The results show that the average moisture fractions and average return rate of the cooling tower increase with the increase of the obstacle height,and decrease with the increase of the obstacle distance without air-guide.The average moisture fractions and average return rate are obviously reduced after installation of the air-guide.

关 键 词：冷却塔 热湿传递 返混率 导风筒 

分 类 号：TU831.3[建筑科学—供热、供燃气、通风及空调工程]