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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 張培仁 | zh_TW |
| dc.contributor.advisor | Pei-Zen Chang | en |
| dc.contributor.author | 林宇竹 | zh_TW |
| dc.contributor.author | Yu-Zhu Lin | en |
| dc.date.accessioned | 2023-10-03T17:18:35Z | - |
| dc.date.available | 2023-11-09 | - |
| dc.date.copyright | 2023-10-03 | - |
| dc.date.issued | 2023 | - |
| dc.date.submitted | 2023-08-10 | - |
| dc.identifier.citation | 1. Flow Meter Market: Global Industry Trends, Share, Size, Growth, Opportunity and Forecast 2021-2026.
2. Olin, J.G. New developments in thermal dispersion mass flow meters. in American Gas Association Operations Conference Pittsburgh, PA May. 2014. 3. Horning, M.A., R. Shakya, and N. Ida, Design of a low-cost thermal dispersion mass air flow (MAF) sensor. Sensing and Imaging, 2018. 19: p. 1-16. 4. Jiang, W., Zhang, T., Wang, H., Xu, Y., Liu, Y., and Liu, X., Sheathed probe thermal gas mass flow meter heat transfer analysis. Flow Measurement And Instrumentation, 2016. 47: p. 83-89. 5. Bekraoui, A. and A. Hadjadj, Thermal flow sensor used for thermal mass flowmeter. Microelectronics journal, 2020. 103: p. 104871. 6. Rupnik, K., I. Bajsić, and J. Kutin, Modelling of a thermal dispersion mass flow meter. Flow Measurement and Instrumentation, 2018. 59: p. 37-44. 7. Baker, R.C. and C. Gimson, The effects of manufacturing methods on the precision of insertion and in-line thermal mass flowmeters. Flow Measurement and Instrumentation, 2001. 12(2): p. 113-121. 8. Rupnik, K., J. Kutin, and I. Bajsić. Axial heat transfer effects on the performance of a thermal dispersion mass flow meter. in XXI IMEKO World Congress, Czech Technical University, Prague. 2015. 9. Olin, J. G., U.S. Patent No. 6,971,274. Washington, DC: U.S. Patent and Trademark Office,2015. 10. Olin, J. G., U.S. Patent No. 9,239,257. Washington, DC: U.S. Patent and Trademark Office., 2016. 11. Gaberthüel, S., U.S. Patent Application No. 16/620,703., 2020. 12. Bess, M., Le, D., Barnett, J., Oberman, M., Patton, S., & Wible, E., U.S. Patent Application No. 16/360,968., 2019. 13. King, L.V., XII. On the convection of heat from small cylinders in a stream of fluid: Determination of the convection constants of small platinum wires with applications to hot-wire anemometry. Philosophical transactions of the royal society of London. series A, containing papers of a mathematical or physical character, 1914. 214(509-522): p. 373-432. 14. Dusen, M.V., Platinum-resistance thermometry at low temperatures1. Journal of the American Chemical Society, 1925. 47(2): p. 326-332. 15. 小栗富士雄, 小栗達男. 標準機械設計便覽. 2005. 16. Bland, J.M. and D. Altman, Statistical methods for assessing agreement between two methods of clinical measurement. The lancet, 1986. 327(8476): p. 307-310. 17. Spiegel, E.A. and G. Veronis, On the Boussinesq approximation for a compressible fluid. Astrophysical Journal, vol. 131, p. 442, 1960. 131: p. 442. 18. Launder, B.E. and D.B. Spalding, The numerical computation of turbulent flows, in Numerical prediction of flow, heat transfer, turbulence and combustion. 1983, Elsevier. p. 96-116. 19. Bagchi, T., Taguchi methods. 1987. | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/90716 | - |
| dc.description.abstract | 近年來由於精密產業崛起，熱擴散式氣體流量計之需求大幅提升，因為熱擴散式流量計在管道中不會造成壓力損失以及可以檢測氣體的優勢，所以被廣泛應用於電子、鋼鐵、半導體…等產業。目前熱擴散式氣體流量計的產品皆為國外進口且價格相當昂貴，約80000 ~ 150000新台幣，且國內尚無此產品的相關專利。故本研究與合作公司桓達科技擬研發此項產品為目標，對此產品進行初期開發，盼能透過此研究奠定開發產品的基礎。本研究係利用COMSOL Multiphysics進行熱擴散式流量計模擬，模擬加熱端溫度與流體流速間之關係，並透過實驗驗證模型之準確度。再利用田口法設計熱擴散式流量計的原型機，訂定原型機的幾何參數，設計感測端的軟性印刷電路板。接著透過實驗取得冷熱端電壓差與流速之關係，最後透過Arduino與LCD螢幕將流速可視化。熱擴散式流量計原型機實驗結果表明，此原型機的再現性佳，且在量測7.6m/s ~ 16.5m/s風速下，其誤差皆小於5%。 | zh_TW |
| dc.description.abstract | In recent years, there has been a significant increase in demand for thermal dispersion gas flow meters due to the rise of the precision industry. This is because thermal dispersion flow meters do not cause pressure loss in pipelines and have the advantage of being able to detect gases. As a result, they are widely used in industries such as electronics, steel, semiconductor, and others. Currently, all thermal dispersion gas flow meter products are imported from foreign countries, and they are quite expensive, costing around 80,000 to 150,000 NTD. Furthermore, there are no relevant patents for this technology domestically. Therefore, this research aims to develop this product as the goal, hoping to lay the foundation for product development through this study. This study utilizes COMSOL Multiphysics to simulate thermal dispersion flow meters, investigating the relationship between the temperature of the heating element and the fluid velocity. The accuracy of the model will be validated through experimental verification. To design the prototype of the thermal dispersion flow meter, the Taguchi method will be utilized. Geometric parameters for the prototype will be determined, and a flexible printed circuit board for the sensing end will be designed. Finally, the flow velocity will be visualized using Arduino and an LCD screen. The experimental results of the thermal dispersion flow meter prototype indicate that the error is less than 5% for wind speeds ranging from 7.6m/s to 16.5m/s. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-10-03T17:18:35Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2023-10-03T17:18:35Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 論文口試委員審定書 i
誌謝 ii 中文摘要 iii ABSTRACT iv 目錄 v 圖目錄 viii 表目錄 xii Chapter1 緒論 1 1.1 研究背景 1 1.2 研究目的 2 1.3 文獻回顧 2 1.3.1 熱擴散式氣體流量計設計 2 1.3.2 熱擴散式氣體流量計建模 4 1.3.3 影響熱擴散式氣體流量計量測性能的製造與裝配方法 5 1.3.4 流速與流量的關係 5 1.4 專利回顧與探討 6 1.5 論文架構 13 Chapter2 實驗方法 14 2.1 熱擴散式氣體流量計操作原理 14 2.2 實驗硬體設備 15 2.2.1 空氣式風機 15 2.2.2 可程式恆溫恆濕試驗機 16 2.2.3 商用SAGE-401熱擴散式氣體流量計樣機 17 2.2.4 FTM94工業級高精度熱線式風速傳感器 18 2.2.5 電阻溫度感測器 19 2.2.6 Arduino與ADS1115 20 2.3 實驗架設 22 2.4 設備與樣機性能測試 23 2.4.1 重複性、平行性與再現性 23 2.4.2 SAGE商用樣機性能測試 24 2.4.3 風機性能測試 25 Chapter3 有限元素模擬與原型機設計 28 3.1 熱傳學與計算流體力學簡介 28 3.1.1 固體與流體熱傳 28 3.1.2 計算流體力學簡介 29 3.1.3 統御方程式 30 3.1.4 Boussinesq Approximation 31 3.1.5 k-ɛ紊流模型與壁函數 32 3.2 有限元素模擬 33 3.2.1 有限元素模擬流程 33 3.2.2 幾何結構、網格設置及邊界條件設定 34 3.2.3 逆向運算模擬與最佳化 37 3.3 實驗與模擬結果交叉驗證 38 3.3.1 實驗驗證模型準確度 38 3.4 基於田口法之原型機設計 39 3.5 管道內流體速度的變化 43 Chapter4 原型機測試結果與討論 45 4.1 原型機製作 45 4.2 熱端對冷端的影響 48 4.3 插入風管深度對溫度造成的影響 48 4.4 熱端與冷端之溫度差與風速的關係 49 4.5 冷熱端之溫度差值對流速增減變化的對稱性 53 4.6 原型機之電阻/電壓的轉換電路設計與量測 54 4.7 原型機平行性與再現性實驗 55 4.7.1 原型機的平行性實驗 55 4.7.2 原型機的再現性實驗 56 4.8 流速可視化 57 Chapter5 結論與未來展望 59 5.1 結論 59 5.2 未來展望 60 參考文獻 61 | - |
| dc.language.iso | zh_TW | - |
| dc.subject | 熱質式流量計 | zh_TW |
| dc.subject | 熱擴散式流量計 | zh_TW |
| dc.subject | 熱流耦合模擬 | zh_TW |
| dc.subject | thermal dispersion flow meter | en |
| dc.subject | thermal-fluid coupling simulation | en |
| dc.subject | thermal mass flow meter | en |
| dc.title | 熱擴散式氣體流量感測器研發 | zh_TW |
| dc.title | Development on Thermal Dispersion Gas Flowmeter | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 111-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 胡毓忠;李尉彰;蔡燿全;游本豐 | zh_TW |
| dc.contributor.oralexamcommittee | Yuh-Chung Hu;Wei-Chang Li;Yao-Chuan Tsa;Ben-Fong Yu | en |
| dc.subject.keyword | 熱擴散式流量計,熱質式流量計,熱流耦合模擬, | zh_TW |
| dc.subject.keyword | thermal dispersion flow meter,thermal mass flow meter,thermal-fluid coupling simulation, | en |
| dc.relation.page | 62 | - |
| dc.identifier.doi | 10.6342/NTU202303484 | - |
| dc.rights.note | 同意授權(全球公開) | - |
| dc.date.accepted | 2023-08-11 | - |
| dc.contributor.author-college | 工學院 | - |
| dc.contributor.author-dept | 應用力學研究所 | - |
| dc.date.embargo-lift | 2028-08-07 | - |
| 顯示於系所單位： | 應用力學研究所 | |
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|---|---|---|---|
| ntu-111-2.pdf 此日期後於網路公開 2028-08-07 | 3.94 MB | Adobe PDF |
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