Noise and Vibration Characteristic Studies of Twin Screw Compressor

       In examining the noise and vibration problems for machineries such as the oil-injected twin screw compressor studied in this work, both the receiver test and path test can be conducted, respectively, for identifying sources and transmission path effects.  This work presents the primary investigation for noise and vibration evaluation on the oil-injected twin screw compressor operating in different loading capacity conditions by performing receiver tests. The 1/3 octave band frequency analysis is first shown to calibrate the major contributed bands for compressor noise as well as the overall A-weighted sound pressure level (SPL). The narrow band or linear frequency analysis is also adopted to characterize the relation between the emission noise and compressor shell vibration. The physical interpretation of spectral contents for both noise and vibration is shown. 
屏東科技大學機械工程系所  振動噪音實驗室
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