Une étude expérimentale de l'écoulement dans un tube capillaire et de son effet sur le comportement acoustique de réfrigérateurs domestiques.
An experimental study on capillary tube flow and its effect on the acoustic behavior of household refrigerators.
Numéro : pap. 2127
Auteurs : HARTMANN D., MELO C.
Résumé
The aim of this work was to study the relationship between capillary tube flow and the acoustic behavior of household refrigerators by investigating a particular type of fluid-induced noise, known as fluctuating noise. To this end a household refrigerator was carefully instrumented and firstly tested in a reverberant chamber and secondly in a climate-controlled chamber. Acceleration measurements were taken at the evaporator inlet pipe showing that the refrigerant flow in that region was highly pulsating. Visualization of the flow pattern at the inlet of the capillary tube was also carried out and revealed the presence of vapor bubbles for most of the time. A needle valve was then installed in series with the freezer capillary tube in order to increase the restriction and match the compressor and the capillary tube mass flow rates. The restriction provided by the optimum needle valve-capillary tube pair was then converted into an equivalent capillary tube. It was found that the higher-restriction capillary tube attenuated the pulsating characteristic of the refrigerant flow, almost completely attenuating the disturbing fluctuating noise.
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Détails
- Titre original : An experimental study on capillary tube flow and its effect on the acoustic behavior of household refrigerators.
- Identifiant de la fiche : 30013488
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Date d'édition : 14/07/2014
Liens
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Indexation
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Stömungsakustische Effekte bei Hauskhaltskätege...
- Auteurs : TANNERT T.
- Date : 01/2016
- Langues : Allemand
- Source : KI Kälte Luft Klimatechnik - n. 1-2
Voir la fiche
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Noise effects in capillary tubes caused by refr...
- Auteurs : TANNERT T., HESSE U.
- Date : 11/07/2016
- Langues : Anglais
- Source : 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
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Massflow fluctuation in capillary tubes of hous...
- Auteurs : TANNERT T., HESSE U.
- Date : 21/08/2016
- Langues : Anglais
- Source : 12th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2016). Proceedings. Édimbourg, United Kingdom, August 21st-24th 2016.
- Formats : PDF
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The effect of biphasic refrigerant flow on refr...
- Auteurs : VENDRAMI C. E., MIGUEL E., SOUZA D. de, et al.
- Date : 09/07/2018
- Langues : Anglais
- Source : 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
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Visualization of refrigerant flow at the capill...
- Auteurs : MARTÍNEZ-BALLESTER S., BARDOULET L., PISANO A., et al.
- Date : 01/2017
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 73
- Formats : PDF
Voir la fiche