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An Experimental Study on the Radiation Noise Characteristics of a Centrifugal Pump with Various Working Conditions

Author

Listed:
  • Chang Guo

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

  • Ming Gao

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

  • Dongyue Lu

    (State Nuclear Power Engineering Company, Shanghai 200233, China)

  • Kun Wang

    (School of Energy and Power Engineering, Shandong University, Jinan 250061, China)

Abstract

To investigate the radiation noise characteristics of a centrifugal pump under various working conditions, a noise measurement system is established; afterwards, the distribution of different points and intervals, as well as the overall level of noise, are studied. The total sound pressure level distribution for different points manifests the dipole and asymmetric directivity characteristics. Additionally, the acoustic energy is introduced to compare the noise of different intervals to reveal the asymmetric characteristics, and it is found that variation in working conditions has little impact on the acoustic energy distribution, and the ratio of the acoustic energy in the direction facing the tongue, as well as that in the direction against the tongue, to total acoustic energy fluctuate around 0.410 and 0.160, respectively, under various working conditions. Also, the A-weighted average sound pressure level (L pA ) is applied to describe the overall level of noise, and L pA increases gradually with the growth of rotational speed, but the growth slope decreases. While in the operation of throttling regulation, L pA shows the trend that first increases, then remains stable, and increases again with the growth of flow rate. This study could provide guidance for optimizing the operating conditions and noise control of centrifugal pumps.

Suggested Citation

  • Chang Guo & Ming Gao & Dongyue Lu & Kun Wang, 2017. "An Experimental Study on the Radiation Noise Characteristics of a Centrifugal Pump with Various Working Conditions," Energies, MDPI, vol. 10(12), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2139-:d:123007
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    References listed on IDEAS

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    1. Ming Gao & Peixin Dong & Shenghui Lei & Ali Turan, 2017. "Computational Study of the Noise Radiation in a Centrifugal Pump When Flow Rate Changes," Energies, MDPI, vol. 10(2), pages 1-11, February.
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    Cited by:

    1. Jiaxing Lu & Xiaobing Liu & Yongzhong Zeng & Baoshan Zhu & Bo Hu & Hong Hua, 2020. "Investigation of the Noise Induced by Unstable Flow in a Centrifugal Pump," Energies, MDPI, vol. 13(3), pages 1-22, January.
    2. Rong Guo & Rennian Li & Renhui Zhang, 2018. "Reconstruction and Prediction of Flow Field Fluctuation Intensity and Flow-Induced Noise in Impeller Domain of Jet Centrifugal Pump Using Gappy POD Method," Energies, MDPI, vol. 12(1), pages 1-17, December.

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