聂波,满建楠,张俊林
NIE Bo,MAN Jian-nan,ZHANG Jun-lin

• 1:华东理工大学

摘要(Abstract)：

以9-26No4A型前向离心通风机为研究对象,试验和数值模拟研究了出口90°弯管在不同连接方式下风机性能的差异。结果表明,风机出口连接正转弯头或反转弯头后,均会造成风机性能的明显下降。随着流量的增大,下降趋势变大。在风机出口与弯头之间连接长度≤3.5倍当量直径的直管段时,风机性能改善微弱。正转弯头与反转弯头对风机性能的影响差别较小。
The experiments and numerical simulationsare conducted to investigate the effect on the performance of a centrifugal fan(9-26No4A) with outlet bent pipe. The results show that the performance of the fan declines significantly when the fan is directly connected with either a forward or a backward outlet bent pipe,especially at large flowrates. But only slight difference on the fan performance is found between the two cases. Moreover,little changes are observed when a straight pipe with length less than or equal to 3. 5Dhis installed between the fan outlet and the outlet bent pipe.

关键词(KeyWords)： 出口弯管;离心通风机;系统效应;风机性能
outlet bent pipe;centrifugal fan;system effect;fan performance

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 聂波,满建楠,张俊林
NIE Bo,MAN Jian-nan,ZHANG Jun-lin

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