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CONVECTIVE FILM BOILING IN A ROD BUNDLE: AXIAL VARIATION OF NONEQUILIBRIUM EVAPORATION RATES.

Author(s) : UNAL C.

Type of article: Article

Summary

AN EXPERIMENTAL STUDY OF CONVECTIVE FILM BOILING IS CARRIED OUT FOR TWO-PHASE STEAM-WATER FLOW IN A NINE-ROD BUNDLE TEST SECTION. MEASUREMENTS OF WALL HEAT FLUX, WALL SUPERHEAT, AND VAPOUR SUPERHEAT ARE OBTAINED AS A FUNCTION OF AXIAL DISTANCE FROM THE CRITICAL HEAT FLUX (QUENCH FRONT) FOR A RANGE OF FLOW RATES AND FLOW QUALITIES. THESE DATA PERMIT THE EVALUATION OF THE EFFECTIVE EVAPORATION RATIO AS A FUNCTION OF TEST CONDITIONS AND AXIAL DISTANCE FROM THE QUENCH FRONT. THE RESULTS INDICATE THE EXISTENCE OF A < NEAR REGION > WITH SIGNIFICANT EVAPORATION, FOLLOWED BY A FAR REGION WHERE THE EFFECTIVE EVAPORATION RATIO DECREASES TO LESS THAN 10% OF THE TOTAL HEAT INPUT.

Details

  • Original title: CONVECTIVE FILM BOILING IN A ROD BUNDLE: AXIAL VARIATION OF NONEQUILIBRIUM EVAPORATION RATES.
  • Record ID : 1989-1292
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 31 - n. 10
  • Publication date: 1988

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