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Nucleate boiling in water for different pressures.

Author(s) : FELDMANN H., LUKE A.

Summary

In this paper, the most common calculation methods for nucleate boiling are presented and compared to experimental results. Especially for low pressures, the predictions of the heat transfer coefficients are far away from the experiments. The calculation method of Gorenflo (1984) turns out to be the most accurate one. New investigations are carried out for water and organic fluids in order to improve this method especially for low pressures. Therefore, an existing standard apparatus for pool boiling at ambient pressure is prepared to fit the new requirements for variable pressures. The setup of the test apparatus is presented, as well as the first results of the measurements. These results show that further influencing parameters have to be taken into account for the boiling mechanisms, such as the surface tension of the fluid, the microstructure of the surface and its corresponding wettability.

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Details

  • Original title: Nucleate boiling in water for different pressures.
  • Record ID : 2009-0076
  • Languages: English
  • Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2008/07/14

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