二元式冷凍真空乾燥設備研製

Cascade Refrigeration System Reaearch of Freeze Dryer

江富麟(Fu-Lin Chiang)

指導教授 ： 鄭鴻斌

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2009年)

摘要

冷凍系統歷史悠久，而冷凍真空乾燥技術皆可應用於食品、生物製品、生醫材料、微奈米材料的乾燥、顏色、保鮮、保存、淬取營養成分等等，因此使用冷凍真空乾燥系統也有一段時間，但是需求操作溫度大多是在-50℃，再加上舊型機台只有一個腔體，若要將冷凝盤管上製程所凝結的霜去除，則需要停機處理，如此一來就會影響生產過程的時間。本論文開發二元式冷凍真空乾燥機台，其操作溫度可達-80℃以下，針對特定的高科技產品製程更有利，並且以業界現有的冷凍真空乾燥設備加以改良，提高製程效率，對生產時間不會產生負面影響。在實驗中發現，高壓段冷媒與低壓段冷媒的配合會有最佳的冷凍蒸發溫度。

關鍵字

二元式冷凍系統 ； 冷凍真空乾燥

並列摘要

Refrigeration system has a long history, and vacuum freeze-drying is a technology used for drying, color protection, fresh keeping, or nutrition preservation of food, biologics, biomaterials, or micro/nano materials, So Freeze-drying systems to be used for some time. But most operating temperature to the systems are -50℃, besides, old machines have only one cold trap chamber, if we want to remove the ice on cold trap, we will shutdown the machines, then Production process will be delayed. This thesis is focused on improving the cascade vacuum Freeze-drying Development, and this operating temperature can reach to -80℃,it is more favorable for specific high-tech products process and will not have a negative impact on production time. In experiments, freeze-drying system had a best evaporative temperature.

並列關鍵字

Cascade System ； Vacuum Freeze-drying

參考文獻

[14] 簡裕晉，棚板式冷凍真空乾燥機設計研究，碩士論文，國立臺北科技大學能源與冷凍空調工程系碩士班，台北，2008。

[2] A. Pearson, “Carbon dioxide-new uses for an old refrigerant,”21st International Congress of Refrigeration, Washington DC, 2003.

[4] H. Liu, Z. Gu, and Y. Li, “Simulation of NH3/CO2 two-stage temperature refrigeration system,” 20th International Congress of Refrigeration, IIR/IIF, Sydney, 1999.

[5] A. Kilicarslan, “An experimental investigation of a different type vapor compression cascade refrigeration system,” Applied Thermal Engineering, 24, 2004.

[12] E.R. Eckert，R.M. Drake. Analysis of Heat and Mass Transfer, McGraw-Hill, New York, 1972.