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THEORETICAL ANALYSIS OF THE WEIGHT LOSS OF FOODSTUFF DURING COLD STORAGE.

[In Italian. / En italien.]

Author(s) : FORNASIERI E., PANOZZO G., CORTELLA G.

Type of article: Article

Summary

A SIMPLE MATHEMATICAL MODEL HAS BEEN DEVELOPED TO ANALYSE THE FACTORS AFFECTING THE WATER MIGRATION FROM FOODSTUFF TO THE COLD SURFACE OF AIR COOLER. UNLIKE MOST OF THE MODELS CONSIDERED IN THE TECHNICAL LITERATURE, THE ONE HERE PROPOSED TAKES INTO ACCOUNT BOTH THE HEAT AND MASS-TRANSFER PROCESSES INVOLVED IN WEIGHT LOSS, IE FROM FOODSTUFF TO AIR AND FROM AIR TO AIR COOLER. THE ANALYSIS CARRIED OUT FOR STEADY STATE CONDITIONS CONFIRMS THE NEED FOR LARGE SURFACES IN FINNED COILS TO RESTRAIN WEIGHT LOSS IN FOODSTUFFS ; HOWEVER, CONTRARY TO POPULAR OPINION, IT HAS BEEN FOUND THAT A LOW EVAPORATION TEMPERATURE IN REFRIGERATING SYSTEM DOES NOT PRODUCE AN EXCESSIVE WEIGHT LOSS WHEN AN ON-OFF CONTROL IS USED, AS THE INCREASED MASS TRANSFER RATE IS BALANCED BY A SHORTER OPERATION TIME. E. F.

Details

  • Original title: [In Italian. / En italien.]
  • Record ID : 1990-1900
  • Languages: Italian
  • Source: Industria italiana del Freddo - vol. 43 - n. 5
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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