Flow-induced noise in refrigerators

Demirtekin B., Sarıgül A. S.

45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016, Hamburg, Almanya, 21 - 24 Ağustos 2016, ss.6515-6525, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Hamburg
  • Basıldığı Ülke: Almanya
  • Sayfa Sayıları: ss.6515-6525
  • Anahtar Kelimeler: Flow-induced noise, Fluctuating noise, Refrigerator, Two-phase flow
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

© 2016, German Acoustical Society (DEGA). All rights reserved.Vibration and noise problems due to fluid flow occur in many refrigerators. This phenomenon obstructs smooth plant operation. The flow-related vibrations are known as "Flow-Induced Vibrations". In the case of piping connected to reciprocating fluid machines, the oscillating (fluctuating) flow generates excitation forces causing to piping vibration. "Flow-Induced Vibrations" cause to "Flow-Induced Noise", known as "Fluctuating Noise". In a refrigerator, refrigerant-induced noise is a combination of fluid-acoustic and vibro-acoustic phenomena. One of the importance sources of the flow-induced noise in refrigerators is two-phase flow at the evaporator inlet. In this study, capillary position design of the evaporator inlet is analysed. Capillary insert length is varied and the effect of this modification is examined by noise tests. The modification results in the abatement of the flow-induced noise.