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Title: | Convective drying of banana, guava and potato pieces : Effect of cyclical variations of air temperature on drying kinetics and color change | Authors: | Chua, K.J. Mujumdar, A.S. Chou, S.K. Hawlader, M.N.A. Ho, J.C. |
Keywords: | Color parameters Cosine-wave profile Heat pump dryer Square-wave profile |
Issue Date: | 2000 | Citation: | Chua, K.J.,Mujumdar, A.S.,Chou, S.K.,Hawlader, M.N.A.,Ho, J.C. (2000). Convective drying of banana, guava and potato pieces : Effect of cyclical variations of air temperature on drying kinetics and color change. Drying Technology 18 (4-5) : 907-936. ScholarBank@NUS Repository. | Abstract: | Pieces of banana, guava and potato were dried in a two-stage heat pump dryer capable of precise control of air humidity with predetermined cyclic variations of air temperature entering the drying chamber. The air temperature variations tested were : a cosine, a reversed cosine and three different square wave profiles with peak-to-valley variations from 20°C to 40°C. The cycle time was about 60 minutes with drying time of approximately 300 minutes. The drying samples were placed on trays in a thin layer. With appropriate choice of temperature-time variation, it is possible to reduce the overall color change while maintaining high drying rates. Copyright © 2000 by Marcel Dekker, Inc. | Source Title: | Drying Technology | URI: | http://scholarbank.nus.edu.sg/handle/10635/58039 | ISSN: | 07373937 |
Appears in Collections: | Staff Publications |
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