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HEAT TRANSFER IN A SINGLE VERTICAL TUBE CONDENSER-SUBCOOLER. EXPERIMENTAL AND THEORETICAL STUDIES.

Author(s) : WEBER M.

Type of article: Article

Summary

A MODEL FOR A VERTICAL CONDENSER-SUBCOOLER IS DESCRIBED. IT IS BASED UPON TESTS PERFORMED WITH: A MONOTUBULAR PYREX CONDENSER EQUIPPED FOR FLOW VISUALIZATION ; AND TWO METALLIC MONOTUBULAR CONDENSERS-SUBCOOLERS (A STEELONE AND A COPPER ONE) HEAVILY EQUIPPED WITH MEASUREMENT DEVICES. THERE IS A SHARP DISCONTINUITY BETWEEN THE CONDENSATION ZONE AND THE LOWER PART OF THE TUBE WHERE THE CONDENSATE COMPLETELY FILLS THE TUBE SECTION. THE LIMIT BETWEEN THESE 2 ZONES IS STABLE IN TIME AND SPACE. THE MODEL IS BUILT ON THE FOLLOWING ASSUMPTIONS: THE LIQUID FILM REACHING THE INTERFACE BETWEEN THE CONDENSATION AND THE FLOODED ZONES DEVELOPS A HYDRODYNAMICAL BEHAVIOUR COMPARED TO A WALL JET ; AND IN THE FLOODED ZONE, A MIXED CONVECTION PHENOMENON OCCURS.

Details

  • Original title: HEAT TRANSFER IN A SINGLE VERTICAL TUBE CONDENSER-SUBCOOLER. EXPERIMENTAL AND THEORETICAL STUDIES.
  • Record ID : 1991-0156
  • Languages: English
  • Source: Period. polytech., Chem. Eng. - vol. 33 - n. 2
  • Publication date: 1989
  • Document available for consultation in the library of the IIR headquarters only.

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