Comparative acoustic analysis of standard and innovative air diffusers with enhanced mixing capabilities
This study addresses the challenge of designing a high-induction air diffuser with a complex geometry that effectively mixes and entrains more ambient air, raising concerns about potential noise increase. The research focuses on the acoustic performance of innovative 3D-printed air diffusers compare...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/08/e3sconf_eenviro2024_02002.pdf |
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| Summary: | This study addresses the challenge of designing a high-induction air diffuser with a complex geometry that effectively mixes and entrains more ambient air, raising concerns about potential noise increase. The research focuses on the acoustic performance of innovative 3D-printed air diffusers compared to the original air diffuser installed in the Dacia-Renault Duster vehicle. The four 3D-printed air diffusers, created using FDM (Fused Deposition Modelling), SLS (Selective Laser Sintering), DLP (Digital Light Processing), and SLA (Stereolithography), were tested to evaluate a single configuration due to concerns that the surface quality resulting from 3D printing could increase the noise produced by these diffusers. Using a professional sound level meter, acoustic measurements were conducted at the V2 (23.9 m3/h) and V3 (33.6 m3/h) flow rate settings. Results showed that the traditional air diffuser had the highest noise levels, measuring 38.2 dB at V2 and 39.6 dB at V3, which were 7.33% and 8.84% louder, respectively, than the innovative designs. Despite the DLP-printed diffuser being the quietest on V2 speed setting, the SLA-printed variant was preferred due to its superior dimensional tolerances and because the differences in noise were small. |
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| ISSN: | 2267-1242 |