Article ID Journal Published Year Pages File Type
647739 Applied Thermal Engineering 2011 9 Pages PDF
Abstract

Studies were performed here to investigate the behaviour of flow-induced noise at the evaporator section of a refrigerating system located in an anechoic chamber. An x-ray system was used to visualize the refrigerant flow in the pertinent tubes of the system. The flow-induced noise under transient and steady-state operations of the system was studied using acoustic, pressure and temperature measurements. Calculations on the bubble size-resonant frequency and x-ray results agreed with the dominant frequency range obtained through acoustical measurements. One-third octave band analysis was performed for the 200–500 Hz frequency range as this frequency band was where the refrigerant-induced noise was found to be dominant in the system. Factors that influence the transient noise generated by the refrigerant flow were identified.

Related Topics
Physical Sciences and Engineering Chemical Engineering Fluid Flow and Transfer Processes
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