Statistical Energy Analysis Model for Sound Pressure Level Prediction on Refrigerators

Zárate, Roberto; Poblet-Puig, Jordi; Ortega, M.C. Hernaez; López-Parra, Marcelo

doi:10.1007/s40857-020-00188-0

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…Based on the fact that the SPL is a dependable index of noise characteristic of the refrigerator and it is used as a pre-commercialization test in some countries, Zarate et al. [331] considered a SEA model of a capacity refrigerator to determine the SPL produced in a reverberation room. Compared to the experimental setup, the simulation results presented reliable outcomes.…”

Section: Vibroacoustic Solutionmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 references are reviewed and described from the first [Formula: see text] to [Formula: see text]. In the first part, in addition to the presentation of a complete explanation about the importance of the acoustic analysis of these structures, appropriate formulations are also provided. Furthermore, an overview of the thematic correspondent is carried out. Since the type of material used in these constructions can be very important in sound insulation, the significance of this subject is remarked. The papers are then classified based on their acoustic excitation fields containing plane wave, diffuse, random, and point source. After analyzing the research approaches according to different environmental properties, the articles are ordered based on their boundaries as finite and infinite. To present reliable outcomes, it is necessary to investigate a proper theory proportional to the structure’s thickness. Herewith, this issue is also discussed in detail. The review is also expanded to focus on the different vibroacoustic solutions. Before concluding remarks, the authors' research works are presented wherein either optimization algorithms or control techniques improve the acoustic performance of these structures.

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Section: Vibroacoustic Solutionmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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“…And the research usually focuses on the energy efficiency of the compressor and the service life of the check valve. [17][18][19] Few research studies are carried out to study the influence of valve plates on the acoustics performance of compressor, especially for variable speed scroll compressor.…”

Section: Introductionmentioning

confidence: 99%

Research on the influence of check valve on noise performance of variable frequency scroll refrigeration compressor

Yan

Wang

et al. 2023

International Journal of Aeroacoustics

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Check valve is one of the core components of the scroll refrigeration compressor, which can directly affect its efficiency, life, and noise performance. Traditional check valve is the reed valve. This paper deeply studies the dynamic characteristics of reed valve and reveals the main reason of the valve noise under different rotation speeds. The large noise is mainly attributing to the large pressure pulsation as well as fast circulation velocity of fluid and the severe slapping of the reed plate on the valve seat, which is influenced by the high pressure ratio of the working condition and stiffness of the reed valve. In order to reduce the noise of the check valve, the circular valve is designed to replace reed valve in this paper. At each rotation speed, the circular valve shows a continuous exhaust process, which avoids the slapping of the valve plate on the valve seat. More importantly, the exhaust is smooth and the pressure pulsation as well as the flow rate of the fluid is reduced significantly leading to the low aerodynamic noise. Therefore, compared with the reed valve compressor, the sound pressure level of the circular valve compressor at 1800, 4200, and 6600 rpm is decreased by 3.0, 5.2, and 0.3 dB, respectively.

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Acoustic performance prediction by means of a statistical energy analysis of two adjacent workrooms used for conferences and educational proposes

Zárate-Espinosa,

Ramírez-Reivich,

Ortega

et al. 2024

Glass Struct Eng

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The current design of workspaces for companies is focused on minimalistic and modern styles prioritizing the aesthetic appearance with illuminated open spaces and the use of glass walls. If the acoustic performance is not considered, inappropriate Reverberation Times (RT) might lead to difficulties for hearing a speaker or teacher during courses and conferences, causing problems in the learning process. Additionally, there might be high sound transmission between adjacent work rooms. This paper presents the development and experimental validation of numerical models using Statistical Energy Analysis (SEA) to calculate the sound reduction index through a glass wall that separates two adjacent work rooms. These structures are dedicated to conferences and educational uses but cannot be properly used due to their high sound transmission and inappropriate reverberant time. The sound insulation prediction results are validated with experimental measurements carried out in the adjacent rooms under the standard ISO-140. Afterwards, a SEA model is used to provide some acoustic correction design guidelines for these types of constructions. To improve the acoustical performance in the rooms, the acoustic effects of different absorbent panels placed on the walls and ceiling were investigated, choosing a suitable material that complies with the recommended ranges of RT and with less amount of absorption area. The SEA model is then used to understand the effects of openings size between the panels that make up the glass wall on the sound insulation capacity between rooms. Finally, a SEA model is reformulated to quantify the effect of the application of double walls for sound insulation between rooms, which implies the increase of weighted sound reduction index in 9 dB with respect to measured data.

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Statistical Energy Analysis Model for Sound Pressure Level Prediction on Refrigerators

Cited by 7 publications

References 23 publications

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Research on the influence of check valve on noise performance of variable frequency scroll refrigeration compressor

Acoustic performance prediction by means of a statistical energy analysis of two adjacent workrooms used for conferences and educational proposes

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