Cooling fan noise is the most significant part of the noise emission of an induction machine. An experimental study was carried out to study the effects of installation parameters on the noise emission of the cooling fan. A series of tests was done according to a test plan designed by a design of experiments method. The factors under investigation were the tip-clearance, the axial position of the impeller and the distance between the impeller and the motor. Experimental prediction models of the results are used to illustrate the changes in the performance and specific sound power level curves of the fan as a function of the parameters. Prediction models are presented for the 1/3 octave-band frequency spectra. The effects of the tip clearance on the curves are the most significant and similar at all operating points of the fan. The effects of the other two factors vary depending on the operation point. The effects on the sound power spectrum depend on the parameter varied. The clearest differences can be seen when the tip clearance is used as a parameter.
|Title of host publication||Proceedings of Inter-Noise 2002, the International Congress and Exposition on Noise Control Engineering|
|Publisher||Institute of Noise Control Engineering|
|Number of pages||6|
|Publication status||Published - 2002|
|MoE publication type||Not Eligible|
|Event||International Congress and Exposition on Noise Control Engineering, Inter-Noise 2002 - Dearborn, United States|
Duration: 19 Aug 2002 → 21 Aug 2002
|Conference||International Congress and Exposition on Noise Control Engineering, Inter-Noise 2002|
|Period||19/08/02 → 21/08/02|
- induction machine
- fan noise
- cooling fan
- prediction model
Hyrynen, J. (2002). Prediction models showing effects of design parameters on induction machine cooling fan performance and sound power. In Proceedings of Inter-Noise 2002, the International Congress and Exposition on Noise Control Engineering Institute of Noise Control Engineering.