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Journal of Mechanical Science and Technology

, Volume 33, Issue 11, pp 5129–5135 | Cite as

Investigation on noise of rotary compressors using fluid-structure interaction

  • Seokjong Jang
  • Hanahchim Choung
  • Seoryong Park
  • Soogab LeeEmail author
Article
  • 10 Downloads

Abstract

Air conditioners consist of heat exchangers, fans, motors and compressors as major components. From the viewpoint of noise, the compressor occupies a very large portion. In this study, rotary compressor which is mainly used in domestic air conditioner was discussed. The noise generated from the rotary compressor can be classified into pressure pulsation of the refrigerant and structural vibration. During the operation of the compressor, the behavior of the refrigerant and the internal structure of the compressor strongly interact with each other. Therefore, an integrated interpretation is required when analyzing from the viewpoint of refrigerant. In this study, the rotary compressor behavior is implemented using the FSI technique and the noise and valve behavior with and without discharge muffler are analyzed.

Keywords

Rotary compressor Fluid-structure interaction Muffler Noise Reed valve 

Nomenclature

x

Coordinates

t

Time

ρ

Density

P

Pressure

U

Velocity component

τ

Stress tensor

htot

Internal energy

h

Internal energy

λ

Thermal conductivity

µ

Molecular viscosity

δij

Direc delta

F

External force

[R]

Matrix of effective suface

[M]

Matrix of mass

[K]

Matrix of damping

Faddh

Adhesion force

C

Stiction coefficient

l0

Initial thickness of the oil

loil

Thickness of the oil

dd

Outer seat diameters

du

Inner seat diameters

NR

Noise reduction

SPL

Sound pressure level

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Notes

Acknowledgments

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194030202300). In addition, this research was also supported by a joint project between LG Electronics and Seoul National University in 2015–2016.

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Copyright information

© KSME & Springer 2019

Authors and Affiliations

  • Seokjong Jang
    • 1
  • Hanahchim Choung
    • 1
  • Seoryong Park
    • 1
  • Soogab Lee
    • 2
    Email author
  1. 1.AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace EngineeringSeoul National UniversitySeoulKorea
  2. 2.Center for Environmental Noise and Vibration Research, Engineering Research Institute, Department of Mechanical and Aerospace EngineeringSeoul National UniversitySeoulKorea

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