According to the analysis on pressure of three kinds of duct systems, concludes that the total pressure of a fan should be equal to the resistance loss of the duct system.
通过对三种风道系统的压力进行分析，认为应根据风机全压等于风管系统阻力损失来选择风机。
2
The effect of each parameter on distribution of static pressure and pressureloss coefficient are found out. Experiments have been carried out in trapezoidal duct with staggered pin fin arrays.
Meanwhile, a group of experimental data of additional noise pressure level and fluid pressureloss generated by flow in a duct is presented to explain the readability of us...