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題 名 | 應用除濕輪輔助茶葉乾燥之研究=The use of Rotary Dehumidifier in Tea Drying |
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作 者 | 劉銘純; 黃謄鋒; | 書刊名 | 臺灣茶業研究彙報 |
卷 期 | 16 1997.05[民86.05] |
頁 次 | 頁29-35 |
分類號 | 473.4 |
關鍵詞 | 茶; 除濕輪; 乾燥; Tea; Rotary dehumidifier; Dry; |
語 文 | 中文(Chinese) |
中文摘要 | 茶葉在高溫溫乾燥易造成香氣散失缺點,本研究應用工研院開發之除濕輪乾燥方 式,研製除濕輪式乾燥機,使茶葉能在較低溫度之 70 ℃以下進行乾燥,結果確有降低香氣 散失量,提高成茶品質之功效。除濕輪乾燥機乾燥茶葉試驗時,以除濕輪乾燥機乾燥成茶達 到 4% 以下含水量,所需時間比傳統熱風箱型乾燥約減少 1/5,而乾燥過程中茶葉之不同時 間含水量比傳統熱風乾燥低 2~3%, 顯示除濕輪乾燥機之乾燥效率與效果均較傳統熱風乾燥 佳。為達乾燥機之多用途利用,本研究將連續式乾燥機賦予密閉式可循環風的功能,不但可 配合除濕輪乾燥機行低溫乾燥,也可用為茶葉烘焙及茶葉熱風乾燥之用。除濕輪乾燥機乾燥 之茶葉以條形包種茶較適宜,因條形包種茶於炒菁揉捻後,便進入初乾程序而後便再乾成茶 ,在再乾過程中便可運用除濕輪之低溫乾燥特性,完成茶葉乾燥至成茶。而半球形包種茶則 須於初乾後再反復經過覆炒、包揉等程序,期間茶葉香氣的改變,已很難掌握,故較不適用 除濕輪乾燥機。利用除濕輪乾燥機經成本估算,較諸傳統柴油或瓦斯熱風式高,惟若就提高 茶葉香氣品質與機械多用途使用觀點,應仍有採行可能。 |
英文摘要 | High drying temperature causes the loss of aromas of tea. In the experiment, the rotary dehumidifier was introduced from Industrial Technology Research Institute, it combined with the tea drying machine to form a drying system which might dry tea below 70 ℃. It revealed that low temperature drying by using rotary dehumidifier maintained more aromas in drying process and increased the made quality. The experiment showed that the rotary dehumidifier drying only need 4/5 drying time in comparison with hot air drying and it also lowered 2-3% tea water content than the hot air drying during the drying process. In order to get the multiple uses of continuous drying machine, it was developed to be fully closed so that the air might circulate in the drying system, it thus might be used for tea roasting. The rotary dehumidifier drying system is more suitable for strip shaped Pauchong tea because the tea must be taken into drying machine for primary drying immediately after rolling and then complete manufacture process with final drying in it. As for the semi-ball shaped Pauchong tea, it is not suitable to use rotary dehumidifier drying system for drying because there are several repeats of repanning and ball rolling process between primary drying and final drying which may cause the loss of aromas and damage of tea quality. The cost of using the rotary dehumidifier drying system to dry tea was higher in comparison with the traditional hot air drying; however, it may be considered to use from the view point of maintaining the aromas and promoting the quality of made tea. |
本系統中英文摘要資訊取自各篇刊載內容。