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ECOFAN: Revestimientos aeroacústicos mejorados para el diseño de ventiladores de sistemas de refrigeración y de climatización

  • Proyecto
  • Resultados
  • Otros

ecofanEnergy efficiency has been identified as one of the key pillars of decarbonisation in the Net Zero Emissions by 2050 roadmap. It should be specially considered for the development of sustainable cities, as almost 80 % of the population lives in towns and consumes 78% of the primary energy. It is estimated that buildings account for 20% to 40% of the total energy consumption in developed countries. From that, the operation of air-conditioning and mechanical ventilation systems accounts for nearly half of the total building electricity consumption and this can be as high as 70% for buildings in the tropics or even higher during episodes of haze. The European Commission has identified three environmental parameters for best performing fans, namely the electricity consumption during use, the leakage of refrigerants over the product life and the radiated noise during use. Unfortunately, energy efficiency and noise are often competing entities and the EU directive has established that impact of the maximum sound power level requirements on the efficiency requirements is not fully understood. Therefore, further work and experimental tests in a sufficient number of appliances are necessary for a better eco-design. In this project, we intend to address jointly both requirements to go to the least life cycle cost level.

To reduce the radiated noise, liners placed inside ducted systems are widely used. However, these methods are responsible of a pressure drop along the duct, implying that the system has to compress the circulating gases to a higher pressure, requiring extra mechanical work and less energy available. It has been shown recently that the use of perforated metamaterials with physical characteristics properly optimised can provide wideband absorption with minimal flow pressure drop. Indeed, a micrometric size of the perforations and the increase of the perforation ratio can generate boundary slip flow conditions with a very low friction factor, so that the fan generating system does not have to compensate for eventual pressure drop of the wall-treatment to keep a nominal flow rate. The main objective of this proposal is to design augmented aeroacoustic liners to reduce at source both the noise pollution and the aerodynamic drag associated to ducted fans. The augmented treatment will be integrated in the fan casing of HVAC (Heat, Ventilation and Air-Conditioning) duct systems. It will involve several strategies including the use of architectured acoustic materials shielded from the flow by innovative low drag microperforated surfaces. It addresses two timely challenges inherent to the acoustics and fluid dynamics disciplines, namely the design of subwavelength wall-treatments able to dissipate low-frequency broadband HVAC noise components and the proposal for ultra-low drag and acoustically neutral surfaces shielding the liner from the flow. The outcomes are the eco-design of ventilating systems retrofitted with augmented liners leading to low fan-noise emissions, reduced aerodynamic drag and a higher energy efficiency. These performances translate directly into noise pollution reduction and energy consumption cutting, thereby contributing towards more sustainable and environmentally-friendly buildings targeted by environmental research/regulating councils, industrials and end users.

 

ecofan

Publicaciones
Año: 2023
Revistas JCR
Broadband sound attenuation and absorption by duct silencers based on the acoustic black hole effect: Simulations and experiments
Teresa Bravo, Cédric Maury
Journal of Sound and Vibration, Volume 561, 2023, 117825
https://doi.org/10.1016/j.jsv.2023.117825
GAA
Vibrational Effects on the Acoustic Performance of Multi-Layered Micro-Perforated Metamaterials
Maury, C., Bravo, T.
Vibration, 2023, 6(3), pp. 695–712
https://doi.org/10.3390/vibration6030043
GAA
From Micro-Perforates to Micro-Capillary Absorbers: Analysis of Their Broadband Absorption Performance through Modeling and Experiments
Maury, C., Bravo, T.
Applied Sciences (Switzerland), 2023, 13(19), 10844
https://doi.org/10.3390/app131910844
GAA
Año: 2024
Revistas JCR
Converging rainbow trapping silencers for broadband sound dissipation in a low-speed ducted flow
T. Bravo and C. Maury
Journal of Sound and Vibration, 589, 118524 (2024)
https://doi.org/10.1016/j.jsv.2024.118524
GAA
Acoustic Pressure Amplification through In-Duct Sonic Black Holes
C. Maury, T. Bravo, M. Amielh and D. Mazzoni
Applied Sciences 14(11), 4699 (2024)
https://doi.org/10.3390/app14114699
GAA
Año: 2025
Libros y Capítulos de Libro
Modelling and characterization of micro-porous resonating liners under a low speed flow
Cédric Maury, Teresa Bravo and Daniel Mazzoni
Capítulo en Flinovia—Flow Induced Noise and Vibration Issues and Aspects—IV (2024 ed.) Edited by Danielle Moreau,Con Doolan,Angus Wills. Springer International Publishing AG
ISBN-10 ‏ : ‎ 3031739345, ISBN-13 ‏ : ‎ 978-3031739347
GAA
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Congresos y reuniones, conferencias
2024
ANALYTICAL PREDICTION AND IN-SITU EXPERIMENTAL CHARACTERIZATION OF ANISOTROPIC FIBROUS MATERIALS
Conferencia invitada

Teresa Bravo, Cedric Maury, Daniel Mazzoni, Muriel Amielh

XIII Congresso Ibérico de Acústica, 55.º Congreso Español de Acústica. TECNIACÚSTICA 2024

Del 11 al 13 de septiembre de 2024, Faro, Portugal.


Puede descargar la comunicación presentada haciendo clic aquí (277.1 KB)
GAA
BROADBAND PERFORMANCE OF MICRO-PERFORATED ACOUSTIC BLACK HOLES IN DUCTS
Conferencia invitada

Teresa Bravo, Cedric Maury, Daniel Mazzoni, Muriel Amielh, Fawad Ali

XIII Congresso Ibérico de Acústica, 55.º Congreso Español de Acústica. TECNIACÚSTICA 2024

Del 11 al 13 de septiembre de 2024, Faro, Portugal.


Puede descargar el artículo haciendo clic aquí (193.52 KB)
GAA
Acoustic Black Hole silencers for broadband dissipation in ducted geometries
Conferencia invitada

Teresa Bravo, Cedric Maury, Daniel Mazzoni, Muriel Amielh 

Exposition on Noise Control Engineering

Del 25 al 29 de agosto de 2024, Nantes, Francia.


Puede descargar la comunicación presentada haciendo clic aquí (825.41 KB)
GAA
Elasticity and modal effects on the optimal performance of micro-perforated multi-layered absorbers
Conferencia invitada

Cédric Maury, Teresa Bravo

Exposition on Noise Control Engineering

Del 25 al 29 de agosto de 2024, Nantes, Francia.


Puede descargar la comunicación presentada haciendo clic aquí (2.34 MB)
GAA
ATTENUATION OF LOW FREQUENCIES FOR DUCTED SYSTEMS BASED ON THE ACOUSTIC BLACK HOLE TECHNIQUE
Conferencia invitada

Teresa Bravo, Cedric Maury, Daniel Mazzoni, Muriel Amielh

30thInternational Congress on Sound and Vibration. ICSV'30

Del 8 al 11 de julio de 2024, Amsterdam, Países Bajos


Puede descargar la comunicación presentada haciendo clic aquí (1.13 MB)
GAA
THE INFLUENCE OF VIBRATIONS ON THE OPTIMAL PERFORMANCE OF MICRO-PERFORATED ACOUSTIC METAMATERIALS
Conferencia invitada

Cédric Maury, Teresa Bravo

30thInternational Congress on Sound and Vibration. ICSV'30

Del 8 al 11 de julio de 2024, Amsterdam, Países Bajos


Puede descargar la comunicación presentada haciendo clic aquí (1.22 MB)
GAA
2023
ACOUSTIC BLACK HOLE EFFECT IN DUCTED GEOMETRIES FOR ENHANCED DISSIPATION AT LOW FREQUENCIES
Conferencia invitada

T. Bravo and C. Maury

Forum Acusticum 2023

Del 11 al 15 de septiembre de 2023, Torino, Italy.


Puede descargar la comunicación presentada haciendo clic aquí (169.74 KB)
GAA
WIND TUNNEL TESTING OF MICRO-PERFORATED MATERIALS
Conferencia invitada

C. Maury and T. Bravo
Forum Acusticum 2023
Del 11 al 15 de septiembre de 2023, Torino, Italy.


Puede descargar la comunicación presentada haciendo clic aquí (404.14 KB)
GAA
Causal-based optimization of micro-perforated treatments
Conferencia invitada

Cedric Maury, Teresa Bravo

Exposition on Noise Control Engineering

Del 20 al 23 de agosto de 2023, Chiba, Greater Tokyo, Japón.


Puede descargar la comunicación presentada haciendo clic aquí (819.08 KB)
GAA
Micro-perforated mufflers based on the Acoustic Black Hole effect
Conferencia invitada

T. Bravo and C. Maury

Exposition on Noise Control Engineering

Del 20 al 23 de agosto de 2023, Chiba, Japan.


Puede descargar la comunicación presentada haciendo clic aquí (400.11 KB)
GAA
In-Duct Broadband Dissipation Using Micro-Capillary Plates
Conferencia invitada

Teresa Bravo, Cedric Maury

Tecniacústica 2023

Del 18 al 20 de octubre de 2023, Cuenca, España.


Puede descargar la comunicación presentada haciendo clic aquí (1.15 MB)
GAA
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Datos del proyecto

ECOFAN
Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023
TED2021-130103B-I00
Investigador principal
Teresa Bravo María
Inicio: 01-12-2022 Finalización: 30-11-2024
GAA
Departamento de Acústica y Evaluación No Destructiva (DAEND)
  • GAA: Grupo de Acústica ambiental
  • G CARMA: Grupo de Caracterización de materiales mediante evaluación no destructiva
  • ULAB: Ultrasonidos para el análisis de líquidos y bioingeniería
Departamento de Tecnologías de la Información y Las Comunicaciones (DTIC)
  • GiCP: Grupo de investigación en Ciberseguridad y Protección de la Privacidad
  • GICSI: Grupo de investigación en Criptología y Seguridad de la Información
    • LCQE: Laboratorio de Comunicaciones Cuánticas
  • PSUM: Grupo de Procesamiento de Señal en sistemas Ultrasónicos Multicanal
Departamento de Sensores y Sistemas Ultrasónicos (DSSU)
  • GSTU: Grupo de Sistemas y tecnologías ultrasónicas
  • NoySI: Grupo de Nanosensores y Sistemas Inteligentes
  • RESULT: Resonadores ultrasónicos para cavitación y micromanipulación
  • SENSAVAN: Grupo de Tecnología de Sensores Avanzados
  • QE: Electrónica Cuántica
Laboratorios
  • Laboratorio de Acústica
  • Laboratorio de Metrología Ultrasónica Médica (LMUM)
  • Laboratorio de Comunicaciones Cuánticas
  • Laboratory for International Collaboration in Advanced Biophotonics Imaging

Instituto de Tecnologías Físicas y de la Información Leonardo Torres Quevedo  - ITEFI
C/ Serrano, 144. 28006 - Madrid • Tel.: (+34) 91 561 88 06  Contacto  •  Intranet
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