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Flow-Induced Noise in Refrigerators

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Vibration and noise problems due to fluid flow occur in many refrigerators. This obstructs smooth plant operation. The flow-related vibrations are known as "Flow-Induced Vibrations". It can be easily understood that the fluid force acting on an obstacle in flow, will vary due to the flow unsteadiness. In the case of piping connected to reciprocating fluid machines, it is well known that the oscillating (fluctuating) flow in the piping generates excitation forces causing piping vibration. "Flow-Induced Vibrations" causes to "Flow-Induced Noise", known as "Fluctuating Noise".Acoustic behavior of most household refrigerators is greatly affected by the flow pattern of the capillary tube. The more oscillating this flow pattern is, the stronger the evaporator vibrations will be. Thus the evaporator vibrates strongly; the noise may be noticeable outside the appliance. Therefore, the flow at the inlet and outlet of the capillary tube of evaporator is more significant in order to determine main noise source on refrigerator.

Document Type: Research Article

Publication date: August 21, 2016

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