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Dynamic heat transfer model of refrigerated foodstuff.

Author(s) : CAI J., RISUM J., THYBO C.

Summary

Traditional control of commercial refrigeration systems focus on controlling the air temperature inside refrigerated display cabinets. It is the product temperature that directly influences the product quality, so, to store the foodstuff with an optimal quality, it is necessary to know their temperature relation. This paper discusses the dynamic heat transfer model of foodstuff inside the display cabinet. An one-dimensional dynamic model is developed, an explicit finite difference method is applied, to handle the unsteady heat transfer problem with phase change, as well as time varying boundary condition. The influence of different factors such as air velocity, type of food, or food package are investigated and the question such as what kind of food are more sensitive to the surrounding temperature change is answered. This model can serve as a prerequisite for modelling of food quality changes, thus enabling the possibility of improving the control of supermarkets refrigeration system.

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Details

  • Original title: Dynamic heat transfer model of refrigerated foodstuff.
  • Record ID : 2007-1623
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

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