本文回顾了由于系统对风扇的影响而产生的一些客户-制造商误解。讨论了各种系统对前向弯曲（sirocco）风机的影响的一般解释。文中还举例说明了系统对轴流风机进口的影响。引文:ASHRAE Transactions，1983年，第89卷，pt。新泽西州大西洋城1B号

This paper reviews some of the customer-manufacturer misunderstandings that occur due to the system effect on fans. A generalized explanation of the effect of various systems on forwardly curved (sirocco) fans is discussed. An example of system effect on the axial fan inlet is also presented.