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Experimental investigations of heat transfer in packed bed of vegetables and fruits.

Number: 0424

Author(s) : LAPINSKI A., BUTRYMOWICZ D.

Summary

Issues of the accurate measurement of heat transfer coefficient for packed bed of vegetables and fruit is complicated due to their complex geometry and the necessity to use fast as well as non-invasive method. The paper presents the basis of the innovative approach of the measurement of the average heat transfer coefficient by the use of the updated single blow method for the case of the packed bed of vegetables and fruits. The measurement approach was positively validated for the case of the packed bed of regular balls. The presented results cover heat transfer coefficient measured for carrot stored in packed beds for two various arrangements and apple stored under conditions of various turbulent intensity at the inlet to the bed from 2 up to 14%. The dimensionless heat transfer correlations were proposed on the basis of the obtained results. It was demonstrated that due to flow laminarisation inside the bed the turbulence intensity has no leading effect on heat transfer inside the bed. The influence of the bed arrangement on heat transfer is significant and heat transfer enhancement was demonstrated for the case of the irregular bed arrangement.

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Pages: 8

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Details

  • Original title: Experimental investigations of heat transfer in packed bed of vegetables and fruits.
  • Record ID : 30028230
  • Languages: English
  • Subject: Technology
  • Source: 10th IIR Conference on Compressors and Refrigerants.
  • Publication date: 2021/01/13
  • DOI: http://dx.doi.org/10.18462/iir.compr.2021.0424
  • Document available for consultation in the library of the IIR headquarters only.

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