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Dynamic behaviour of ice production in liquid-liquid circulating fluidized bed.

[In Chinese. / En chinois.]

Author(s) : PENG P., CHEN P., HE Z., et al.

Type of article: Article

Summary

An experimental apparatus was set up based on the liquid-liquid circulating fluidized bed for ice slurry generation, and the dynamic behaviour of this new ice making system was experimentally investigated under different conditions. Ice crystals produced under each condition were measured and the data measured were analyzed. The critical factors that strongly influenced the ice crystal size were discussed. The variation in temperature of the carrier fluid was explored in real time by a data acquisition system. The relationship between the dispersed phase flow rate and the circulated continuum flow rate was analyzed. The results show that the size distribution of the ice crystals displays non-uniform and mainly congregates in the range of 1-2 mm. The ice crystal size rests significantly on carrier flow rate, jet velocity and inner diameter (ID) of the spray nozzle. It decreases with the decrease of the carrier flow rate and reaches the maximum at an intermediate flow rate of the dispersed phase of 120 mL/min. At smaller ID of the spray nozzle, the ice crystal size decreases clearly. The increase of the carrier temperature gradient decreases along the bed. In addition, the carrier circulating rate increases first but then decreases with the increase of the jet flow rate.

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Pages: pp. 7-13

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 2010-0121
  • Languages: Chinese
  • Source: Journal of Refrigeration - vol. 30 - n. 1
  • Publication date: 2009/02

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