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ACRC Technical Report 163PDF


Title:Prediction of Noise Generated by Expansion Devices Throttling Refrigerant
Author(s):Singh, G.M.; Rodarte, E.; Miller, N.R.; Hrnjak, P.S.
Subject(s):acoustic signal propagation
Abstract:A method is presented for predicting the noise generated by expansion devices throttling refrigerant, based on an existing standard model for predicting the noise downstream of large, industrial control valves throttling air. The presented method can be used to predict the noise downstream of any expansion device of any size for any pure two-phase or pure vapor refrigerant flow. Comparison of the model predictions to experimental data for orifice tubes, capillary tubes, and refrigerant valves show excellent agreement over a wide range of operating conditions. Experimental results for the attenuation of sound waves in a two-phase refrigerant flow are also presented, as well as direct comparisons of the noise generated by different expansion devices over similar operating conditions.
Issue Date:2000-04
Publisher:Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Air Conditioning and Refrigeration Center TR-163
Genre:Technical Report
Sponsor:Air Conditioning and Refrigeration Project 72
Date Available in IDEALS:2009-05-26

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