Study on a countermeasure for high level sounds generated from a boiler tube bank duct
| Project/Area Number |
25420199
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Tokushima Bunri University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 熱交換器 / 空力自励音 / バッフル板 / 穴あき板 / 開口率 / 音響減衰 / 騒音抑制効果 / ボイラ / 気柱共鳴 / 穴開き板 / カルマン渦 / 機械工学 / 機械力学・制御 / 音響情報・制御 |
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| Outline of Final Research Achievements |
Heat exchangers such as boilers are important equipment in industrial fields. However theses boilers are operated a high level sound is generated and it becomes a cause of complaints from neighbors and a large amount of cost loss. The present study aims to propose a new and reasonable countermeasure and to clarify the usefulness experimentally. As a result, it was clarified that perforated plates with over 1% of aperture ratio can suppress the high level sound effectively and the suppression effects are dependent on aperture ratio and the SPL decreases with increasing the aperture ratio.
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Report
(4 results)
Research Products
(20 results)
