本文介绍了通风机的选择和安装，以及风机噪声衰减的一些指南。目的是为空气处理系统设计工程师提供典型的风机噪声值，以估算风机辐射到通风系统的噪声。考虑的风机类型为离心式和轴流式风机，通常与中央车站空调系统和工业通风系统中的管道系统一起使用。风扇噪音以声音的形式报告- 功率级和通过使用校准参考声源和替代技术在半混响室中进行的噪声测量来计算。本规范不包括现场测量。风扇行业报告风扇噪声，在8个倍频程频段，中心频率为63、125、250、500、1000、2000、4000、8000 Hz，声功率级为10-12瓦。实验室风扇噪声测量技术由空气移动和调节协会（AMCA公告300）规定- 67，《空气移动装置声音等级标准试验规范》）。引文:研讨会，ASHRAE交易，第81卷，第2部分，马萨诸塞州波士顿

This paper covers selection and installation of ventilating fans and some guidelines for the attenuation of fan noise. The purpose is to give the airhandling system design engineer typical fan noise values for estimating the noise a fan will radiate to a ventilating system. The types of fans considered are centrifugal and axial fans of the type normally used with duct systems in central station air-conditioning systems and industrial ventilating systems.Fan noise is reported in terms of sound-power levels and is calculated from noise measurements taken in a semi-reverberant room using a calibrated reference sound source and the substitution technique. The present code does not cover field measurements. The fan industry reports fan noise in terms of sound power level re 10-12 watt in the 8 octave bands with center frequencies of 63, 125, 250, 500, 1000, 2000, 4000, 8000 Hz. Laboratory fan noise measurement techniques are specified by the Air Moving and Conditioning Association (AMCA Bulletin 300-67, Standard Test Code for Sound Rating Air Moving Devices).