Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials
The diffusion of mechanical ventilation systems increased rapidly due to the climate changes in all parts of the world. The mechanical ventilation systems are mainly used in the summer for many difficulties to face very hot temperatures. One of the biggest problems considered if every residential un...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-01-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/3/1650 |
| _version_ | 1797625119674204160 |
|---|---|
| author | Amelia Trematerra Antonella Bevilacqua Gino Iannace |
| author_facet | Amelia Trematerra Antonella Bevilacqua Gino Iannace |
| author_sort | Amelia Trematerra |
| collection | DOAJ |
| description | The diffusion of mechanical ventilation systems increased rapidly due to the climate changes in all parts of the world. The mechanical ventilation systems are mainly used in the summer for many difficulties to face very hot temperatures. One of the biggest problems considered if every residential unit is equipped with a mechanical ventilation system is the generation of noise by the rotating blades of the fan for refrigeration. This paper discusses the applications of metamaterials to create attenuation filters to be installed inside the encases of the mechanical ventilation systems in order to obtain sound attenuation. A three-dimensional reticular structure made with spheres has been studied in different configurations related to the numbers of layers employed. The sound attenuations were measured at some specific octaves, depending on the particular configurations. In general, the sound attenuation peaks have been measured between 4 kHz and 8 kHz; this is expected to mitigate the tonal noise component typical of fans based on different variables that compose the whole system (e.g., fan diameter, number of blades, fan speed). However, the outcomes shall be considered in terms of laboratory conditions since material properties of the enclosure and potential polarization effects due to reflection of sound waves at the boundaries may occur. |
| first_indexed | 2024-03-11T09:52:19Z |
| format | Article |
| id | doaj.art-a8aa62a942d14e989f2e45e65c48af9c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T09:52:19Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a8aa62a942d14e989f2e45e65c48af9c2023-11-16T16:08:31ZengMDPI AGApplied Sciences2076-34172023-01-01133165010.3390/app13031650Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional MetamaterialsAmelia Trematerra0Antonella Bevilacqua1Gino Iannace2Department of Architecture and Industrial Design, University of Campania “Vanvitelli”, 81031 Aversa, ItalyDepartment of Industrial Engineering, University of Parma, Area delle Scienze, 43100 Parma, ItalyDepartment of Architecture and Industrial Design, University of Campania “Vanvitelli”, 81031 Aversa, ItalyThe diffusion of mechanical ventilation systems increased rapidly due to the climate changes in all parts of the world. The mechanical ventilation systems are mainly used in the summer for many difficulties to face very hot temperatures. One of the biggest problems considered if every residential unit is equipped with a mechanical ventilation system is the generation of noise by the rotating blades of the fan for refrigeration. This paper discusses the applications of metamaterials to create attenuation filters to be installed inside the encases of the mechanical ventilation systems in order to obtain sound attenuation. A three-dimensional reticular structure made with spheres has been studied in different configurations related to the numbers of layers employed. The sound attenuations were measured at some specific octaves, depending on the particular configurations. In general, the sound attenuation peaks have been measured between 4 kHz and 8 kHz; this is expected to mitigate the tonal noise component typical of fans based on different variables that compose the whole system (e.g., fan diameter, number of blades, fan speed). However, the outcomes shall be considered in terms of laboratory conditions since material properties of the enclosure and potential polarization effects due to reflection of sound waves at the boundaries may occur.https://www.mdpi.com/2076-3417/13/3/1650spheresacoustic filtersnoise attenuationrefrigerationmetamaterialsthree-dimensoional lattice |
| spellingShingle | Amelia Trematerra Antonella Bevilacqua Gino Iannace Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials Applied Sciences spheres acoustic filters noise attenuation refrigeration metamaterials three-dimensoional lattice |
| title | Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials |
| title_full | Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials |
| title_fullStr | Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials |
| title_full_unstemmed | Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials |
| title_short | Noise Control in Air Mechanical Ventilation Systems with Three-Dimensional Metamaterials |
| title_sort | noise control in air mechanical ventilation systems with three dimensional metamaterials |
| topic | spheres acoustic filters noise attenuation refrigeration metamaterials three-dimensoional lattice |
| url | https://www.mdpi.com/2076-3417/13/3/1650 |
| work_keys_str_mv | AT ameliatrematerra noisecontrolinairmechanicalventilationsystemswiththreedimensionalmetamaterials AT antonellabevilacqua noisecontrolinairmechanicalventilationsystemswiththreedimensionalmetamaterials AT ginoiannace noisecontrolinairmechanicalventilationsystemswiththreedimensionalmetamaterials |