Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Mechanical Engineering | en_US |
| dc.contributor.advisor | Cheng, Li (ME) | - |
| dc.creator | Zhang, Wanxin | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/8594 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | - |
| dc.rights | All rights reserved | en_US |
| dc.title | Analysis and design of high noise insulation windows | en_US |
| dcterms.abstract | This work systematically investigates the feasibility of applying transparent, micro-perforated panel absorbers (MPPAs) into window systems for traffic noise attenuation (1000-1500Hz), and establishes a generalized design strategy for optimizing MPPAs for window system noise control. Ageneral theoretical model was first established which predicts the acoustic performance of the micro-perforated panel with a regular backing cavity for normal incidence. The parameters of the panel were then varied and the respective sound absorption coefficients obtained and compared to identify MPPA acoustic performance variation trends. Simulations demonstrated MPPA control performance in a window structure within the frequency band of interest. MPPA parameters were optimized to improve the sound attenuation performance of a simulated window system based on the variation trends mentioned above; the average sound pressure level difference was considered the objective index for optimization. As validation, an experimental model was built and the experiment was conducted in a full anechoic chamber to demonstrate the effectiveness of transparent MPPA application for sound attenuation in window systems, sound attenuation performance of window system with different backing cavities were compared for optimization. Ventilation performance was likewise favorable, as evidenced by a simple experiment run to compare air flow velocities at the inlet and outlet of a test window system. | en_US |
| dcterms.extent | x, 79 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2016 | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.LCSH | Windows -- Acoustic properties. | en_US |
| dcterms.LCSH | Soundproofing. | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b29109383.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 2.87 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/8594