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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 陳希立(Sih-Li Chen) | |
dc.contributor.author | Po-Hsun Wu | en |
dc.contributor.author | 吳柏勳 | zh_TW |
dc.date.accessioned | 2021-06-16T06:40:48Z | - |
dc.date.available | 2019-08-13 | |
dc.date.copyright | 2014-08-13 | |
dc.date.issued | 2014 | |
dc.date.submitted | 2014-07-29 | |
dc.identifier.citation | [1] 經濟部能源局。能源查核與節約能源案例手冊-空調系統。2012年12月。
[2] 江國棟,「雙塔式矽膠除濕系統之測試與模擬分析」,碩士論文,國立中興大學機械工程學系研究所,1993。 [3] 陳伸介,「再生式全熱交換器之週期式運轉性能研究」,碩士論文,國立臺灣大學機械工程學系研究所,2010。 [4] C.M Yang, C.C. Chen, S.L. Chen. Energy-efficient air conditioning system with combination of radiant cooling and periodic total heat exchanger. Energy, Vol.59, pp.467-477, 2013. [5] Ahmed M. Hamed, Walaa R. Abd El Rahman, S.H. El-Eman. Experimental study of the transient adsorption/desorption characteristics of silica gel particles in fluidized bed. Energy, Vol.35, pp.2468-2483. 2010. [6] Daizo Kunii. Fluidization Engineering. 1991. [7] 陳子東,「矽膠流體化床之性能研究」,碩士論文,國立臺灣大學機械工程學系研究所,2013。 [8] Alexander Reichhold, Hermmann Hofbauer. Internally circulating fluidized bed for continuous adsorption and desorption. Chemical Engineering and Procseesing, Vol.34, pp.521-527. 1995. [9] Akihiko HORIBE, Sukmawaty, Naoto HARUKI , Daiki HIRAISHI. Continuous Sorption and Desorption of Organic Sorbent Powder in Two Connected Fluidized beds. Journal of Thermal Science and Technology, Vol.7, pp.564-576. 2012. [10] 董代富。正確使用乾燥劑矽膠。感光材料(5): 57。1996。 [11] Butterworths LondoIl, G.W. Brundrett. Handbook of Dehumidification Technology. 1987. [12] 薛殿華。空氣調節。清華大學出版社。1997. [13] 謝長鈜,「週期式運轉全熱交換器之吸附材料性能研究」,碩士論文,國立臺灣大學機械工程學系研究所,2011。 [14] K. Smolders, J. Baeyens. Gas fluidized beds operating at high velocities: a critical review of occurring regimes. Poowder Technology, Vol.119, pp.269-291. 2001 [15] D. Geldart. Type of Gas Fluidization. Powder Technology, Vol.7, pp.285-292. 1973. [16] Semion Shaul, Evgeny Rabinovich, Kaim Kalman. Generalized flow regime diagram of fluidized beds based on the height to bed diameter ratio. Powder Technology, Vol.228, pp.264-271. 2012. [17] Akhil Rao1, Jennifer S. Curtis1, Bruno C. Hancock, Carl Wassgren. The effect of column diameter and bed height on minimum fluidization velocity. AIChE Journal, Vol.56, pp.2304-2311. 2010. [18] Y K Mohanty, G K Roy, K C Biswal. Effect of column diameter on dynamics of gas-solid fluidized bed: A statistical approach. Indian Journal of Chemical Technology, Vol.16,pp.17-24. 2009. [19] Stephen Brunauer, Lola S. Deming, W. Edwards Deming, Edward Teller. On a Theory of the van der Waals Adsorption of Gases. Journal of the American Chemical Society, Vol.62,pp.1723-1732. 1940. [20] Sabri Ergun. Fluid Flow Through Packed Columns. Carnegie Institute of Technology. 1952. [21] M. Leva, Fluidization, McGraw-Hill, New York, 1959. [22] A. Haider, O. Levenspiel. Drag coefficient and terminal velocity of spherical and nonspherical particles. Powder Technology, Vol.58, pp.63-70. 1989. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/57298 | - |
dc.description.abstract | 本研究之目的為設計矽膠循環流體化床系統,包含吸附床與再生床兩床體,以期能夠作為連續吸附潮濕空氣中水分之用。藉由氣固流體化床氣體與固體間高質傳率以及床體性質等優點,在流體化床中填充矽膠顆粒作為吸附材。並設計顆粒通道,透過重力以及空氣帶動矽膠顆粒在兩床體間循環使得系統能夠連續對水分進行吸附與脫附。
本文藉由設計系統並且對於影響系統的性能參數分別進行實驗,以了解系統的基本性能,如:吸附與脫附能力,以及影響系統性能參數,如:風速、再生溫度等,對系統性能的影響。實驗在兩床體中分別填充540 g,平均顆粒直徑為4 mm的矽膠顆粒。風速範圍從4.0 m/s至6.0 m/s,再生溫度由40°C至60°C。實驗結果顯示,風速以及再生溫度的增加使得系統的吸附與脫附性能有很顯著的增加。 本研究亦對循環流體化床的設計參數改變進行實驗,如床體中收集顆粒的漏斗高度以及在床體中加入擋板改善顆粒在床體中的運動狀態。實驗結果顯示,漏斗高度的增加使得吸附水分的矽膠顆粒不易循環,減少系統的吸附與脫附性能。而加入擋板後,改善系統性能,使得系統吸附能力提升14 %。 | zh_TW |
dc.description.abstract | The purpose of this study is to design a silica gel circulating fluidized bed that can continuous adsorb water content from air. The system contains two fluidized beds, one is adsorption bed, the other is desorption bed. Gas-Solid fluidized bed has several advantages such as high heat and mass transfer rate and uniform bed properties. With filling silica gel particles as desiccant material in the bed, and design of particle channels to transport particles circulating between two fluidized beds, the system can adsorb water continuously.
This study designs a silica gel circulating fluidized bed system and experimentally investigates the adsorption and desorption performance of the system. The experiment was carried out under various conditions, such as air velocity and desorption air temperature. Each bed is filled with 540 g of silica gel particles which mean diameter is 4 mm. In experiment, air velocity is raised from 4.0 m/s to 6.0 m/s, and desorption temperature is raised from 40°C to 60°C. It was found that the performance of the system is increased with increasing of both air velocity and desorption air temperature. This study further investigates the performance of the system under various designs. It was found that with increasing the height of particle channel, the performance of the system decreased. Furthermore, with placing an inclined plate into bed can increase the circulation rate of the sorbent. Hence the performance of the system was increased. This improvement can increase the water adsorbed by 14% compared to the original design. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T06:40:48Z (GMT). No. of bitstreams: 1 ntu-103-R01522102-1.pdf: 5952496 bytes, checksum: f2974add99a7dbeb0f8c0a794f72ce3b (MD5) Previous issue date: 2014 | en |
dc.description.tableofcontents | 誌謝 I
摘要 II Abstract III 目錄 V 圖目錄 VII 目錄 X 符號說明 XI 第一章 緒論 1 1-1 前言 1 1-2 文獻回顧 2 1-3 研究動機與目的 5 第二章 基礎理論 14 2-1 全熱交換器運作原理 14 2-2 吸附流體化床運作原理 14 2-3 吸附原理 19 2-4 流體化床數學理論 20 第三章 研究方法 27 3-1 循環流體化床設計與簡介 27 3-2 實驗系統與實驗設備 28 3-2-1 實驗系統簡介 28 3-2-2 設備簡介 29 3-3 實驗方法與參數 31 3-4 實驗流程 33 第四章 結果與討論 46 4-1系統連續操作下的穩定性 46 4-2 風速對系統性能影響 47 4-3 再生床入口空氣溫度對系統性能影響 48 4-4 改變循環流體化床設計對系統性能影響 49 第五章 結論與建議 62 5-1 結論 62 5-2 建議 63 參考文獻 64 | |
dc.language.iso | zh-TW | |
dc.title | 矽膠循環流體化床應用於吸附除濕系統之研究 | zh_TW |
dc.title | Investigation of Silica Gel Circulating Fluidized Bed with Applications on Desiccant Dehumidification System | en |
dc.type | Thesis | |
dc.date.schoolyear | 102-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 楊馥菱(Fu-Ling Yang),卓清松,江沅晉 | |
dc.subject.keyword | 流體化床,循環流體化床,吸附除濕,矽膠,吸附,脫附, | zh_TW |
dc.subject.keyword | fluidized bed,circulating fluidized bed,desiccant dehumidification,silica gel,adsorption,desorption, | en |
dc.relation.page | 65 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2014-07-30 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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