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FREEZE-DRYING OF A FROZEN LIQUID IN A PHIAL.

Author(s) : LIAPIS A. I., MARCHELLO J. M.

Type of article: Article

Summary

A SORPTION-SUBLIMATION MATHEMATICAL MODEL FOR A FREEZE-DRIER IS PRESENTED, AND USED TO INVESTIGATE THE DESIGN AND OPERATION OF A FREEZE-DRIER, IN WHICH A FROZEN LIQUID ENCLOSED IN A PHIAL IS DRIED. FOR RECONSTITUTED DRIED SKIM MILK, THE BEST OPERATING CONDITION WOULD CORRESPOND TO MINIMUM CHAMBER INERT GAS PRESSURE. THE MOST DESIRABLE DESIGN OF DRIER APPEARS TO BE ONE IN WHICH MODERATE BUT CONSISTENT RESISTANCES TO HEAT TRANSFER ARE INCORPORATED, SO THAT THE HEAT FLUX PROGRAM OF THE LOWER HEATING PLATE COULD BE OPTIMIZED BY OPERATING AT A HIGHER TEMPERATURE, EITHER UNDER FEEDBACK OR PREPROGRAMMED FEEDFORWARD CONTROLLERS. (DAIRY SCI. ABSTR., GB. , 46, N.4, 1984/04, 234, 2026.

Details

  • Original title: FREEZE-DRYING OF A FROZEN LIQUID IN A PHIAL.
  • Record ID : 1984-2525
  • Languages: English
  • Source: Drying Technol. - vol. 2 - n. 2
  • Publication date: 1983
  • Document available for consultation in the library of the IIR headquarters only.

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