The original design of a water-washed air cleaner, which developed by industry, only takes external design and assemblage into account, but the analysis of the overall performance wasn¡¦t studied. The air in the original water-washed air cleaner doesn¡¦t flow smoothly, which cause the inefficiency of the inlet and outlet flow, so there is a necessity to improve its performance.
At beginning of this thesis study, the researcher designed the shape of the blades, and then analyzed the internal fluid field of the water-washed air cleaner. He also studied the impact of the efficiency of the aperture of diaphragm and the gap between blade and diaphragm. Finally, he obtained a series of result of simulation with simulating flow field produced by CFD to find out the best shape and amount of blades. The outlet flow performs better when £] is greater. However, when extreme values are between 50 degrees to 60 degrees, the smaller inclination of blade has better efficiency of the outlet flow. The amount of blades is not always positive to the efficiency. When the number of blades is more than 9, there is no significant increase of the outlet flow. The larger aperture of diaphragm has better efficiency, and decreases the gap between the blade and the diaphragm can increase outlet flow. Finally we obtained the result of optimization efficiency by Taguchi Method.
After designing the best water washed air cleaner, the vibration is also simulated. The result of simulation showed that the nature frequency of overall structure is much higher than motor¡¦s, so that would not cause the resonant vibration.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0808111-121256 |
| Date | 08 August 2011 |
| Creators | Tsai, Chia-Shiuan |
| Contributors | Shi-Pin Ho, S.J. Wu, S.K. Yang |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0808111-121256 |
| Rights | user_define, Copyright information available at source archive |
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