Noise Control on Chiller with Ammonia Based on Vibration-Acoustics Analysis in Mechanical Engineering

Noise detection and vibration analysis have been made in the enterprise where screw compressor unit has been running with problems for a long term. According to the characteristics of noise and vibration spectrum, ammonia refrigeration operation fault and noise source have been analyzed, and a noise reduction scheme is made. Based on this, through the optimization of compound sound absorbing structure parameters design and manufacturing device of sound insulation, thereby hidden safety trouble can be eliminated and the working environment of workers can be improved. Besides, mechanical properties of the compressor group are more stable. In practical engineering applications, good effect of noise reduction has been achieved.