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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46921完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 李允中 | |
| dc.contributor.author | Wen-Tse Yang | en |
| dc.contributor.author | 楊文策 | zh_TW |
| dc.date.accessioned | 2021-06-15T05:43:21Z | - |
| dc.date.available | 2011-08-20 | |
| dc.date.copyright | 2010-08-20 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-08-20 | |
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IEE Proceedings-Science Measurement and Technology 144(5): 215-222. 26. Noh, S. H. and S. O. Nelson. 1989. Dielectric Properties of Rice at Frequencies from 50 Hz to 12 GHz. Trans. ASAE 32(3): 991-998. 27. Orfeuil, M. 1987. Electric Process Heating, 519. Columbus, OH: Battelle Memorial Institute. 28. Pan, Z., R. Khir, L. D. Godfrey, R. Lewis, J. F. Thompson, and A. Salim. 2008. Feasibility of simultaneous rough rice drying and disinfestations by infrared radiation heating and rice milling quality. Journal of Food Engineering 84: 469-479. 29. Prasad, A., and P. N. Singh. 2007. A new approach to predicting the complex permittivity of rice. Transaction of the ASABE 50(2): 573-582. 30. Rao, N. N. 2004. Elements of Engineering Electromagnetics. 6th ed., 600-623. New Jersey: Person Prentice Hall. 31. Stratton, J. A. Electromagnetic theory. 1941. 1st ed. New York: McGraw-Hill. 32. Stuchly, M. A., M. M. Brady, S. S. Stuchly and G.. Gajda. 1982. Equivalent circuit of an open-ended coaxial line in a lossy dielectric. IEEE Transactions on instrumentation and measurement, 31(2): 116-119. 33. Stuchly, M. A. and S. S. Stuchy, 1980. Coaxial line reflection methods for measuring dielectric properties of biological substances at radio and microwave frequencies-a review. IEEE Transactions on instrumentation and measurement 29: 176-183. 34. Tateya, A. and T. Takano. 1977. Effects of microwave radiation on two species of stored-product insects. Res. Bull. Pl. Prot. Japan 14: 52-59. 35. Tang, J., J. N. Ikediala, S Wang, J. D. Hansen, and R. P. Cavalieri. 2000. High-temperature-short time thermal quarantine methods. Postharvest Biology 21: 129-145. 36. UNEP. 1997. Ninth meeting of the parties to the Montreal protocol on substances that deplete the ozone layer. Montreal: UNEP OzL. Pro. 9/12. Available at: http://ozone.unep.org/Meeting_Documents/mop/09mop/MOP_9.shtml. Accessed 25 September 1997. 37. Vincent, C., B. Panneton, and F. Fleurat-Lessard. 2001. Physical control methods in plant protection. INRA ed., 74-82. Springer-Verlag: Heidelberg. 38. Wang, J. 2007. Study of electromagnetic field uniformity in radio frequency heating applicator. Department of Biological System Engineering. WA: Washington State University, Pullman. 39. Wang, S., J. N. Ikediala , J. Tang, J. D. Hansen, E. Mitcham, R. Mao, and B. Swanson. 2001. Radio frequency treatments to control codling moth in in-shell walnuts. Postharvest Biology and Technology 22:29-38. 40. Yokoyama, V. Y., G. T. Miller, and R. V. Dowell. 1991. Response of codling moth (Lepidoptera: Tortricidae) to high temperature, a potential quarantine treatment for exported commodities. Journal of Economic Entomology 84: 528-531. 41. Zhao, S., C. Qiu, S. Xiong, and Cheng, X. 2007. A thermal lethal model of rice weevils subjected to microwave irradiation. Journal of Stored Products Research 43: 430-434. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46921 | - |
| dc.description.abstract | 本研究應用一單模共振腔之微波介電加熱方式實行於稻米蟲害防制。米象 (Sitophilus oryzae) 對於稻穀侵蝕嚴重，除了造成質與量的降低外甚至影響到食品安全。由於米象與稻米介電性質的差異，在使用電磁波加熱上有選別性加熱的可能。為探討在高頻交變電場下米粒內部的加熱情況，研究使用有限元素分析軟體COMSOL Multiphysics 3.5a之耦合電磁模組與熱傳導模組進行暫態分析求解加熱過程的溫度變化，並在矩形波導管耦合圓柱單模共振腔的幾何結構中尋找合適的進料孔徑尺寸以達到較高加熱效率。模擬中分別探討米粒內不同位置的蟲卵，以及進料管內不同排列方向的米粒所造成的升溫差異。本研究提出之熱致死動力學模型顯示，米象成蟲在51℃僅需3到4秒即可達100 % 致死率。模擬微波加熱結果顯示5秒溫度可達60℃，而實際批次實驗量測加熱5秒所得平均溫度為56.8℃，與理論值接近。另外模擬中發現米粒朝垂直方向加熱與水平方向溫度分佈有顯著差異，前者加熱效率遠高於後者，因此若利用連續流動進料方式所產生的旋轉將有利於溫度均勻度的改進。本研究發展出介電加熱應用於稻米蟲害防治的方法，並以實驗與模擬數據提供將來商用設備設計的基礎。 | zh_TW |
| dc.description.abstract | An application of electromagnetic energy to rice disinfestation was implemented in this study by using a microwave single-mode cavity resonator. Rice weevil (Sitophilus oryzae), the target insect to be controlled, was suggested to show higher characteristic in dielectric loss factor so that differential heating was possible to be achieved in its host medium. To evaluate the intra-kernel temperature raise in the time-varying electric field, the 3D simulations of microwave model were constructed and computed by using commercial finite element method software COMSOL Multiphysics 3.5a with electromagnetic wave module and conduction heat transfer module to simulate the dielectric heating process. Using a single mode resonator to excite high electric field intensity in the center line of the resonator, high efficiency heating without attenuation is achievable. Results of the analysis showed that rice grain infested with a single weevil reached the literature lethal temperature of 60℃ for 5 seconds, having slight selective heating effect in the simulation models. While 56.8℃ was measured for the average experimental value during the same heating time, our thermal-mortality kinetics model found only 3 ~ 4 seconds at 51℃ was necessary for the adult rice weevil to reach 100 % mortality. Other results suggest that rice grain orientation parallel to the resonator axis has better heating efficiency than perpendicular condition; therefore, the heating uniformity might be improved by rotation under continuous feed-in situation. The finding from this study provides information in dielectric heating application to rice weevil control in rice which might help to deign a more energy-saving and time-saving electromagnetic energy treatment. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T05:43:21Z (GMT). No. of bitstreams: 1 ntu-99-R97631004-1.pdf: 2713307 bytes, checksum: 4cce2c00f88ba7c111e85f45f1857aa8 (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 誌謝 i
摘要 ii Abstract iii 目錄 iv 圖目錄 vi 表目錄 ix 符號說明 x 第一章 前言 1 1.1 研究背景 1 1.2 研究目的 2 第二章 文獻探討 3 2.1介電加熱原理 3 2.1.1 傳導與位移電流密度 3 2.1.2 介電質鬆弛損耗 4 2.1.3 功率消耗 5 2.2 射頻微波加熱比較 6 2.3 介電加熱的影響因素 8 2.3.1 電場強度分佈與介電性質 8 2.3.2 含水率、密度與介電性質 10 2.3.3 致死溫度 14 2.4 微波傳輸理論 16 2.4.1 矩形波導管 16 2.4.2 圓柱共振腔 18 2.5 介電係數量測 19 2.5.1 同軸探棒開路反射法 19 2.5.2 電容模型 (capacitance model) 20 2.6 米象培育與實驗前處理 22 第三章 研究方法 24 3.1 軟體模型建立 24 3.1.1 電磁模組設定 26 3.1.2 熱傳模組設定 27 3.1.3 模形幾何結構 28 3.2 實驗架構 29 3.2.1米象培育 30 3.2.2介電係數量測 31 3.2.3 微波加熱處理 34 第四章 結果與討論 37 4.1 軟體模擬結果 37 4.1.1 管徑比較 37 4.1.2 單粒米結構模型 42 4.2 介電係數量測結果 54 4.3微波加熱實驗結果 58 4.3.1 微波加熱升溫過程 58 4.3.2 米象成蟲加熱致死實驗 60 4.3.3 蟲卵處理結果 63 第五章 結論 65 參考文獻 66 | |
| dc.language.iso | zh-TW | |
| dc.title | 單模共振腔介電加熱對米象防治之研究 | zh_TW |
| dc.title | Single-Mode Cavity Resonator in Dielectric Heating for Rice Weevil (Sitophilus oryzae) Control | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 盧福明,許如君 | |
| dc.subject.keyword | 微波加熱,米象,有限元素法,介電性質, | zh_TW |
| dc.subject.keyword | Microwave heating,Sitophilus oryzae,FEM method,Dielectric property, | en |
| dc.relation.page | 70 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2010-08-20 | |
| dc.contributor.author-college | 生物資源暨農學院 | zh_TW |
| dc.contributor.author-dept | 生物產業機電工程學研究所 | zh_TW |
| 顯示於系所單位： | 生物機電工程學系 | |
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