摘要
建立5mm管径翅片管式换热器百叶窗翅片的物理模型和数学模型,模拟分析百叶窗翅片开窗角度和换热器管间距对空气侧性能的影响,结果表明:在相同迎面风速下,空气侧的换热量及表面传热系数均随百叶窗开窗角度的增大而增大,风机功率随之大幅增加;空气侧的换热量及表面传热系数均随管间距的减小而增大;综合考虑换热量、风机功率及空气侧表面传热系数,开窗角度20°、管间距17.1 mm时换热器空气侧性能更优。
The physical and mathematical models of the louvre fins of a 5 mm diameter finned tube heat exchanger are established to simulate and analyze the effects of the slit angle of louvre fins and the tube spacing of heat exchanger on the air-side performa-nce.The results show that under the same facing wind speed,the heat transfer capacity and surface heat transfer coefficient at the air side both increase with the increase of the slit angle,and subsequently,the fan power increases substantially.The heat transfer capacity and surface heat transfer coefficient at the air side both increase with the decrease of the tube spacing.Considering the heat transfer capacity,fan power and air-side surface heat transfer coefficient,the air-side performance of the heat exchanger is optimal with slit angle of 20°and tube spacing of 17.1 mm.
作者
谭裕锋
刘小琴
马迪
吕根贵
陈旗
吴红霞
晏刚
Tan Yufeng;Liu Xiaoqin;Ma Di;LüGengui;Chen Qi;Wu Hongxia;Yan Gang(Hisense(Guangdong)Air-conditioning Co.,Ltd.;College of Mechanical and Electrical Engineering,Shaanxi University of Science&Technology;School of Energy and Power Engineering,Xi'an Jiaotong University)
出处
《制冷与空调》
2024年第10期79-84,96,共7页
Refrigeration and Air-Conditioning
关键词
空调
换热器
翅片管式
传热强化
开窗角度
管间距
air-conditioning
heat exchanger
finned tube type
heat transfer enhancement
slit angle
tube spacing
