Sound reduction in heat exchanger modules by integrating plate absorbers with sub-millimeter openings

Czwielong F, Floss S, Kaltenbacher M, Becker S (2021)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2021

Journal

Acta Acustica European Acoustics Association (EAA)

DOI: 10.1051/aacus/2021020

Open Access Link: https://acta-acustica.edpsciences.org/articles/aacus/abs/2021/01/aacus210026/aacus210026.html

Abstract

In air conditioning systems heat exchangers are frequently installed upstream of ventilators. These modules are part of the daily life of humans and should therefore create an environment that is as quiet as possible. The heat exchanger generates increased turbulence, which leads to increased sound emissions of the ventilator. Due to installation space limitations, it is not possible to connect silencers to the heat exchanger module. A novel concept is presented, which allows to reduce the sound emissions of heat exchanger due to plate absorbers without the need of additional installation room. The plates contain sub-millimeter openings. They are integrated into the heat exchanger housing together with back volumes. This arrangement guarantees compactness and generates no additional flow resistance. The emitted sound could be reduced by up to 2.9 dB in the partial load range. The main advantages of the concept presented are individual adjustment, cost-effective design and simple installation.

Authors with CRIS profile

Felix Czwielong Lehrstuhl für Prozessmaschinen und Anlagentechnik (iPAT) Stefan Becker Lehrstuhl für Prozessmaschinen und Anlagentechnik (iPAT)

Additional Organisation(s)

Lehrstuhl für Prozessmaschinen und Anlagentechnik (iPAT)

Involved external institutions

Technische Universität Graz AT Austria (AT) Technische Universität Wien / Vienna University of Technology AT Austria (AT)

How to cite

APA:

Czwielong, F., Floss, S., Kaltenbacher, M., & Becker, S. (2021). Sound reduction in heat exchanger modules by integrating plate absorbers with sub-millimeter openings. Acta Acustica. https://doi.org/10.1051/aacus/2021020

MLA:

Czwielong, Felix, et al. "Sound reduction in heat exchanger modules by integrating plate absorbers with sub-millimeter openings." Acta Acustica (2021).

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