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研究生:謝典縉
研究生(外文):HSIEH, TIEN-CHIN
論文名稱:吸附除溼裝置對旁通循環熱風之乾燥性能實驗研究
論文名稱(外文):An Experimental Investigation on the Drying System Incorporating Desiccant Devices at Various Bypass Ratios
指導教授:徐金城徐金城引用關係
指導教授(外文):SHYU, JIN-CHERNG
口試委員:吳世國楊愷祥徐金城
口試委員(外文):WU, SHIH-KUOYANG, KAI-SHINGSHYU, JIN-CHERNG
口試日期:2017-07-19
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:71
中文關鍵詞:吸附除溼乾燥節能矽膠
外文關鍵詞:adsorptiondehumidificationdryingenergy savingsilica gel
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  • 下載下載:2
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由於台灣氣候屬於高溫高溼,溼度高對產業而言,是種對品質的考驗。所以溼度控制儼然成為必要之生產考量。目前業界最常見之乾燥形式為熱風乾燥,為提升熱風乾燥機之性能且降低能耗,本研究設計塗佈吸附劑之熱管熱交換器應用於熱風乾燥系統。本系統藉由加熱且吸附除溼之進風,獲得低溼度熱風以提升熱風乾燥機之除溼性能。在本研究中,使用四組吸附除溼裝置之乾燥移水量可達無使用裝置之350%。吸附裝置於不同環境條件亦有不同性能表現,進風比溼度越高吸附效果越好,以相對溼度85%及40%條件相比吸附水汽量,15℃條件下達178%;35℃條件下則高達197%。
而吸附劑經吸附後,須進行再生脫附,過程中加熱器相當耗能。本研究加入熱管熱交換器設計,以模擬回收廢熱之方式,降低所需加熱耗能且增強脫附效果。在同樣使用60℃熱風再生脫附狀況下,使用110℃廢熱輔助其再生脫附量提升66%;以130℃廢熱輔助則提升80%。由於經乾燥程序之熱風,尚保有溫度及除溼能力,本研究加入旁通回收管路,使其可再次回到系統中再次進行乾燥。而且在正向風速1 m/s、熱風溫度60℃及旁通比例100%完全系統內循環的條件下,乾燥過程中加熱器平均耗電量僅無旁通循環回收之44%,乾燥移水量卻可提高10%。

The precisely control of air humidity in the process of production in Taiwan is of great importance because of the hot and humid weather in Taiwan. The most common drying type is hot-air drying. In order to enhance the performance and reduce the energy consumption of hot-air dryer. An adsorbents coated heat pipe exchanger was designed and incorporated into a hot-air drying system was proposed in this study. By reducing the humidity and increasing the temperature of inlet air, the performance of hot-air dryer can be enhanced. It was found in the study that the amount of water removal achieved 350% while the adsorbed devices were used compared to the case without using adsorbed devices. The performance of the adsorbed device depends on the environmental condition. For example, the higher the specific humidity of inlet air is, the better the adsorbed effect is.
After adsorbing, the device needs to regenerate. During the process, the heater consumes energy quite a lot. By recovering industrial waste heat, the system reduces its energy consumption and enhance the regeneration. In the same condition of using the regenerated desorption with 60℃hot-air, using 110℃simulated waste heat can increase its amount of desorption up to 66%; moreover, using 130℃recovered waste heat can increase 80%. After the drying process, the hot air still remains its temperature and ability of dehumidification. Consequently, the research puts by-pass-recycling piping in order to make hot air return to the system and then dry again. With air frontal velocity of 1 m/s, hot air temperature of 60℃as well as by-pass ratio of 100 %, the average energy consumption of the heater is only 44% while the amount of water removal increases by 10% compared to the condition without by-pass recycle.

摘要 I
Abstract II
致謝 III
目錄 IV
表目錄 VI
圖目錄 VII
符號說明 IX
第一章 緒論 1
1.1 研究動機 1
1.2 文獻回顧 5
1.3 論文架構 9
第二章 理論分析 10
2.1 溼空氣的性質 10
2.2 吸附原理 13
2.3 吸附劑介紹 14
2.4 矽膠吸附特性 15
2.5 吸附除溼原理 16
2.6 熱交換器介紹 17
第三章 實驗方法 19
3.1 吸附裝置設計 19
3.2 實驗設備 22
3.3 進風加熱系統 24
3.4 旁通循環管路 26
3.5 顯示及控制面板 27
3.6 實驗測試段 27
3.7 數據擷取系統 32
3.8 不準度分析 37
第四章 結果與討論 41
4.1 有無吸附除溼裝置對乾燥效益之提升 41
4.2吸附除溼裝置之吸附及脫附性能測試 45
4.2.1 吸附性能測試 47
4.2.2 脫附性能測試 53
4.3廢熱回收之再生脫附效益 56
4.4旁通熱氣回收之乾燥效益 59
第五章 結論與未來展望 65
5.1 結論 65
5.2 未來展望 67
參考文獻 68


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