Next Article in Journal
Ageing and Water-Based Processing of LiFeMnPO4 Secondary Agglomerates and Its Effects on Electrochemical Characteristics
Next Article in Special Issue
Numerical Study on the Transient Thermal Performance of a Two-Phase Closed Thermosyphon
Previous Article in Journal
Near State Vector Selection-Based Model Predictive Control with Common Mode Voltage Mitigation for a Three-Phase Four-Leg Inverter
Previous Article in Special Issue
Numerical Study on the Acoustic Characteristics of an Axial Fan under Rotating Stall Condition
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Energies 2017, 10(12), 2139; https://doi.org/10.3390/en10122139

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

1
School of Energy and Power Engineering, Shandong University, Jinan 250061, China
2
State Nuclear Power Engineering Company, Shanghai 200233, China
*
Author to whom correspondence should be addressed.
Received: 8 November 2017 / Revised: 5 December 2017 / Accepted: 12 December 2017 / Published: 15 December 2017
(This article belongs to the Special Issue Engineering Fluid Dynamics 2018)
Full-Text   |   PDF [3178 KB, uploaded 15 December 2017]   |  

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 (LpA) is applied to describe the overall level of noise, and LpA increases gradually with the growth of rotational speed, but the growth slope decreases. While in the operation of throttling regulation, LpA 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. View Full-Text
Keywords: centrifugal pump; radiation noise; distribution characteristic; acoustic energy; experimental research centrifugal pump; radiation noise; distribution characteristic; acoustic energy; experimental research
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Guo, C.; Gao, M.; Lu, D.; Wang, K. An Experimental Study on the Radiation Noise Characteristics of a Centrifugal Pump with Various Working Conditions. Energies 2017, 10, 2139.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top