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EFFECT OF NON CONDENSIBLES ON CONDENSATION AND EVAPORATION OF BUBBLES.

Author(s) : ULLMANN A., LETAN R.

Type of article: Article

Summary

THE FRACTION OF NON CONDENSIBLES IN A BUBBLE CONTROLS THE TEMPERATURE DRIVING FORCE IN THE PROCESS OF CONDENSATION AND EVAPORATION. IT AFFECTS THE VAPOUR PARTIAL PRESSURE, AND CONSEQUENTLY THE APPARENT TEMPERATURE OF SATURATION. THE WORK DEALS WITH A BUBBLE CONDENSING IN IMMISCIBLE AND MISCIBLE LIQUIDS, AND WITH THE EVAPORATION OF A BUBBLE IN AN IMMISCIBLE LIQUID. THE COMPLETE, EXACT EXPRESSION OFTHE DIMENSIONLESS APPARENT SATURATION TEMPERATURE IS FORMULATED, AND ALL ITS TERMS ARE EXAMINED, INCLUDING THE VARIATION OF PHYSICAL PROPERTIES. THE ANALYSIS IS EXTENDED OVER SYSTEMS OF R113, PENTANE, AND HEXANE. THE EXACT RELATION IS COMPARED WITH PREVIOUS APPROXIMATE SOLUTIONS AND THE LIMITS OF APPLICATION ARE ILLUSTRATED. THE DISCREPANCY INCREASES AT HIGH TEMPERATURE DIFFERENCES. THE RATE OF COLLAPSE IS EXAMINED IN A SYSTEM OF R113 IN WATER. THE EFFECT OF NON CONDENSIBLES IS MOST PRONOUNCED AT THE HIGHER TEMPERATURE DIFFERENCE.

Details

  • Original title: EFFECT OF NON CONDENSIBLES ON CONDENSATION AND EVAPORATION OF BUBBLES.
  • Record ID : 1990-1833
  • Languages: English
  • Source: J. Heat Transf. - vol. 111 - n. 4
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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