Experimental investigations of the sound emissons of axial fans under the influence of suction-side heat exchangers

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Details zur Publikation

Autorinnen und Autoren: Czwielong F, Krömer F, Becker S
Jahr der Veröffentlichung: 2019
Sprache: Englisch


Abstract

A primary application of axial fans is their use in combination with heat exchangers in air
conditioning systems. In addition to the positive aspect of cooling, air conditioning systems
generate noise. The noise generation mechanisms of axial fans with suction-side heat exchangers
are not yet fully understood, in particular due to a lack of investigations on real systems. In
this study, we investigate the flow field and the acoustic interactions between axial fans and
suction-side heat exchangers of real air conditioning systems.
As a result, we have found that the geometry of the heat exchangers affects the flow field
upstream of the axial fans with respect to the anisotropy of the flow. The heat exchangers
influenced the flow field similar to flow straighteners. In addition, we showed that the choice
of heat exchangers and fan blade skew type changed the acoustics of air conditioning systems.
Our results demonstrate that the acoustic optimization of air conditioning systems can
only be achieved through the joint optimization of heat exchangers and axial fans. Although
not all parameters were examined, we were able to show the influence of the heat exchangers
on the flow field and the acoustic radiation of the axial fans. Further investigations on the
acoustic interaction between heat exchanger and axial fan would contribute to the systematic
optimization of air conditioning systems.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Becker, Stefan apl. Prof. Dr.
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Czwielong, Felix
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Zenger, Florian
Lehrstuhl für Prozessmaschinen und Anlagentechnik


Zusätzliche Organisationseinheit(en)
Lehrstuhl für Prozessmaschinen und Anlagentechnik


Zitierweisen

APA:
Czwielong, F., Krömer, F., & Becker, S. (2019). Experimental investigations of the sound emissons of axial fans under the influence of suction-side heat exchangers. In Proceedings of the 25th AIAA/CEAS Aeroacoustics Conference. Delft, NL.

MLA:
Czwielong, Felix, Florian Krömer, and Stefan Becker. "Experimental investigations of the sound emissons of axial fans under the influence of suction-side heat exchangers." Proceedings of the 25th AIAA/CEAS Aeroacoustics Conference, Delft 2019.

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Zuletzt aktualisiert 2019-23-05 um 18:53