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EXTENSION TO PLANK'S EQUATION FOR PREDICTING FREEZING TIMES OF FOODSTUFFS OF SIMPLE SHAPES.

Author(s) : PHAM Q. T.

Type of article: Article, IJR article

Summary

BY MAKING CERTAIN ANALYTICAL APPROXIMATIONS, A SIMPLE FREEZING-TIME PREDICTION METHOD IS OBTAINED THAT USES NO EMPIRICAL FACTOR OR CHART. THE FREEZING PROCESS IS DIVIDED INTO COOLING AND PHASE-CHANGE PERIODS, THE LATTER BEING CALCULATED WITH PLANK'S EQUATION, THE FORMER WITH EXTENSIONS TO NEWTON'S LAW OF COOLING. THE GRADUAL CHARACTER OF THE PHASE-CHANGE PROCESS IS TAKEN INTO ACCOUNT BY THE USE OF A < MEAN FREEZING TEMPERATURE >, WHILE THE THERMOPHYSICAL PROPERTIES OF THE MATERIAL ARE APPROXIMATED BY STRAIGHT-LINE SEGMENTS. THE METHOD AGREES WITH PUBLISHED DATA.

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Pages: 377-383

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Details

  • Original title: EXTENSION TO PLANK'S EQUATION FOR PREDICTING FREEZING TIMES OF FOODSTUFFS OF SIMPLE SHAPES.
  • Record ID : 1985-1471
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 7 - n. 6
  • Publication date: 1984

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