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Spray evaporation heat transfer of R141b on a horizontal tube bundle.

Author(s) : CHANG T. B., CHIOU J. S.

Type of article: Article

Summary

The test tube used is a 19.1 millimeter diameter copper tube, heated by an electrical resistor. The spray nozzle has a full cone shape with its hydraulic diameter at 2 millimeters. The average heat transfer coefficients were calculated by measuring the mean tube surface temperature and the vapour temperature. Pool boiling experiments were compared with spray cooling data under the same test conditions. The dry out phenomenon was observed close to the critical heat flux. In the study, a liquid film collector is designed for each tube to prevent dry out phenomenon, ensuring much better performance.

Details

  • Original title: Spray evaporation heat transfer of R141b on a horizontal tube bundle.
  • Record ID : 2000-0661
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 42 - n. 8
  • Publication date: 1999/04

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