Study on the noise reduction of refrigerant flow at outlet of capillary tube (relationship between two-phase flow and noise issue)

Recently, Noise reduction for indoor air conditioning units has become necessary. This paper discusses: (1) Exploration at the noise source of capillary tube and outlet plenum. (2) the reason for high-and-low-frequency noise of fluid flow based on R22 fluid flow pattern. (3) the method of noise redu...

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Bibliographic Details
Published inNihon Kikai Gakkai rombunshuu. B hen Vol. 61; no. 584; pp. 1450 - 1455
Main Authors Yoshikawa, Hideo, Ozawa, Takeo, Inoue, Yukiharu, Takeuchi, Seikou
Format Journal Article
LanguageJapanese
Published 01.01.1995
Subjects
Air conditioning
Q1
Refrigerants
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Summary:Recently, Noise reduction for indoor air conditioning units has become necessary. This paper discusses: (1) Exploration at the noise source of capillary tube and outlet plenum. (2) the reason for high-and-low-frequency noise of fluid flow based on R22 fluid flow pattern. (3) the method of noise reduction dependent on supercooling of refrigerant R22 by setting an additional cooler up-stream of the capillary tube. According to the above items, it is necessary for the noise reduction to control bubble contents at an outlet of the capillary tube.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
content type line 23
ObjectType-Feature-1
ISSN:0387-5016