Comparison of quasi-steady-state and unsteady-state formulations in a freeze dryer modeling

被引:8
作者
Adhami, Shekoufe [1 ]
Rahimi, Amir [1 ]
Hatamipour, Mohammad S. [1 ]
机构
[1] Univ Isfahan, Dept Chem Engn, Esfahan, Iran
关键词
SUBLIMATION; VIALS;
D O I
10.1007/s00231-014-1337-x
中图分类号
O414.1 [热力学];
学科分类号
摘要
An unsteady-state model is developed for primary and secondary stages of freeze drying process of skim milk. The results are compared with those obtained from a quasi-steady-state (QSS) formulation. The QSS formulation is not valid where the applied heat load is high. The applied heat load affects on the drying time the most compared to other parameters like chamber pressure and the radiation surface temperature.
引用
收藏
页码:1291 / 1300
页数:10
相关论文
共 14 条
[1]   Modeling and simulation of parametric sensitivity in primary freeze-drying of foodstuffs [J].
Chakraborty, R. ;
Saha, A. K. ;
Bhattacharya, P. .
SEPARATION AND PURIFICATION TECHNOLOGY, 2006, 49 (03) :258-263
[2]  
Dolan JP, 1998, USE VOLUMETRIC HEATI
[3]   GASEOUS DIFFUSION IN POROUS MEDIA .2. EFFECT OF PRESSURE GRADIENTS [J].
EVANS, RB ;
WATSON, GM ;
MASON, EA .
JOURNAL OF CHEMICAL PHYSICS, 1962, 36 (07) :1894-&
[4]   Development and validation of heat and mass transfer models for freeze-drying of vegetable slices [J].
George, JP ;
Datta, AK .
JOURNAL OF FOOD ENGINEERING, 2002, 52 (01) :89-93
[5]   SUBLIMATION-DEHYDRATION IN CONTINUUM, TRANSITION AND FREE-MOLECULE FLOW REGIMES [J].
HILL, JE ;
SUNDERLAND, JE .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1971, 14 (04) :625-+
[6]   Freeze-drying of pharmaceutical proteins in vials: Modeling of freezing and sublimation steps [J].
Hottot, A ;
Peczalski, R ;
Vessot, S ;
Andrieu, J .
DRYING TECHNOLOGY, 2006, 24 (05) :561-570
[7]   Research and development needs and opportunities in freeze drying [J].
Liapis, AI ;
Pikal, MJ ;
Bruttini, R .
DRYING TECHNOLOGY, 1996, 14 (06) :1265-1300
[8]   OPTIMAL-CONTROL OF A FREEZE DRYER .1. THEORETICAL DEVELOPMENT AND QUASI STEADY-STATE ANALYSIS [J].
LIAPIS, AI ;
LITCHFIELD, RJ .
CHEMICAL ENGINEERING SCIENCE, 1979, 34 (07) :975-981
[9]   Hot air and freeze-drying of high-value foods: a review [J].
Ratti, C .
JOURNAL OF FOOD ENGINEERING, 2001, 49 (04) :311-319
[10]   RELATIONSHIOP BETWEEN TRANSPORT PROPERTIES AND RATES OF FREEZE-DRYING OF POULTRY MEAT [J].
SANDALL, OC ;
KING, CJ ;
WILKE, CR .
AICHE JOURNAL, 1967, 13 (03) :428-&