基于声强技术空调风机噪声声功率测试研究

Research of Sound Power for Air-conditioning Ventilator Based on Sound Intensity

介绍噪声声功率测试原理和方法,进行基于声强技术的噪声测试研究,通过采取简易隔噪措施,在现场环境下实现列车空调风机口处噪声声功率的测试。分析结果表明列车空调风机出风口处噪声为80dBA,满足要求,同时也证明声强技术对声功率测试的有效性和受环境影响较低的特点。

The theory and method to test the sound power are introduced. The testing of sound power for train air-condition ventilator are carry out at the scene enviroment, taking simple anti-noise measures. The numerical value of sound power for train air-condition ventilator is 80dBA. The result showed that the train air-condition ventilator js satisfactory, and the result also showed that the envieonment effect on the sound power by use of testing sound intensity is small.