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Transition boiling curves in saturated pool boiling from horizontal cylinders.

Author(s) : UNGAR E. K., EICHHORN R.

Type of article: Article

Summary

Pool boiling heat flux versus wall superheat boiling curves were obtained for horizontal 3.18-mm-diametre thin-walled brass tubes heated by an internal high-speed flow of ethylene glycol. The boiling liquids were saturated n-pentane, R113, acetone, methanol, ethanol, benzene, and isopropanol. Boiling results include nucleate and transition boiling in all the test liquids, but film boiling was achieved only with methanol. The measured peak heat fluxes are well correlated by available predictions. The methanol experiments clearly display two transition boiling curves, one obtained on increasing the cylinder temperature from nucleate boiling, the other on decreasing the cylinder temperature from film boiling. For the cases in which the highest cylinder temperature reached only into the transition regime, a single transition boiling curve resulted.

Details

  • Original title: Transition boiling curves in saturated pool boiling from horizontal cylinders.
  • Record ID : 1997-3236
  • Languages: English
  • Source: J. Heat Transf. - vol. 118 - n. 3
  • Publication date: 1996/08
  • Document available for consultation in the library of the IIR headquarters only.

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