想把一台既无铭牌又无配套电机的风机重新利用起来,就得先对设备的性能参数作较为接近的估算。 首先要实测一下叶轮的几个基本几何参数:外径D_2、进口直径D_1、叶轮出口宽度b_2、叶片出口安装角β_(2y)(如图1)。 现以一组实地测得的数据为例,简介其估算过程。 If you want to reuse a fan that has neither a name plate nor a matching motor, you must first make a closer estimate of the performance parameters of the device. First of all, to measure the impeller a few basic geometric parameters: diameter D_2, inlet diameter D_1, the impeller exit width b_2, blade outlet installation angle β_ (2y) (Figure 1). Take a set of field measured data as an example to introduce its estimation process.