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FAN SPEED CONTROL IN A BLAST FREEZER USING MODEL REFERENCE CONTROL.

Author(s) : WEE H. K., LOEFFEN M. P. F., PHAM Q. T.

Summary

A COMPUTERIZED FAN SPEED CONTROL SCHEME WAS DESIGNED AND IMPLE MENTED IN A COMMERCIAL AIR BLAST LAMB CARCASS FREEZER. THE MAIN OBJECTIVE WAS TO MINIMIZE THE ELECTRICITY CONSUMPTION OF THE FREEZER FANS DURING FREEZING. THIS WAS ACHIEVED BY A COMPUTER PROGRAM THAT CONTINUOUSLY OPTIMIZED THE FAN SPEED. THE OPTIMAL FAN SPEED IS DETERMINED BY A MODEL REFERENCE CONTROL SCHEME BASED ON A SIMPLIFIED FREEZING TIME PREDICTION EQUATION. IN ADDITION, THE PROGRAM ENSURES THAT THE PRODUCT CONFORMS TO PREDEFINED TENDERNESS AND HYGIENIC STANDARDS. PAYBACK ON INVESTMENT WAS TWO YEARS FROM ELECTRICITY COST SAVINGS ALONE.

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Pages: p . 997-1000

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Details

  • Original title: FAN SPEED CONTROL IN A BLAST FREEZER USING MODEL REFERENCE CONTROL.
  • Record ID : 1992-2372
  • Languages: English
  • Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
  • Publication date: 1991/08/10
  • Document available for consultation in the library of the IIR headquarters only.

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