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Direct-contact evaporation in the homogeneous and heterogeneous bubbling regimes. 1. Experimental analysis.

Author(s) : RIBEIRO C. P. Jr, LAGE P. L. C.

Type of article: Article

Summary

Using the air-water system, transient experimental measurements of liquid temperature, bubbling height, evaporation rate, gas hold-up and bubble size distributions in a direct-contact evaporator were performed for four gas superficial velocities including operation in both homogeneous and heterogeneous bubbling regimes. Perforated and porous plates were used as spargers. Significant effects of both the sparger and the gas flow rate upon the equipment performance were verified and systematically analysed, revealing some rather interesting features of transient non-isothermal bubbling, such as temporal evolution of bubble size distributions and gas hold-up values. (See also this Bulletin, reference 2005-0628.)

Details

  • Original title: Direct-contact evaporation in the homogeneous and heterogeneous bubbling regimes. 1. Experimental analysis.
  • Record ID : 2005-0627
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 17-18
  • Publication date: 2004/08

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