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HEAT-TRANSFER CHARACTERISTICS OF THE R113 ANNULAR TWO-PHASE CLOSED THERMOSYPHON.

Author(s) : MAEZAWA S., TAKUMA M., TSUCHIDA A.

Type of article: Article

Summary

VISUAL OBSERVATION OF FLOW PATTERNS IN THE CONDENSER AND HEAT TRANSFER MEASUREMENTS WERE CONDUCTED FOR HEAT TRANSFER RATE RANGES OF 18-800 W USING A VERTICAL ANNULAR DEVICE. RIPPLES (INTERFACIAL WAVES) WERE GENERATED ON THE CONDENSATE FILM SURFACE WHEN THE CONDENSATE FILM REYNOLDS NUMBER EXCEEDED APPROXIMATELY 20, AND THE CONDENSATION HEAT TRANSFER WAS PROMOTED. A SIMPLE THEORETICAL ANALYSIS WAS PRESENTED WHICH AGREED WELL WITH EXPERIMENTAL RESULTS WHEN THE WORKING FLUID QUANTITY WAS SMALL ENOUGH SO THAT THE TWO-PHASE MIXTURE GENERATED BY BOILING THE WORKING FLUID DIDN'T REACH THE CONDENSER.

Details

  • Original title: HEAT-TRANSFER CHARACTERISTICS OF THE R113 ANNULAR TWO-PHASE CLOSED THERMOSYPHON.
  • Record ID : 1989-0890
  • Languages: English
  • Source: JSME int. J., Ser. II - vol. 31 - n. 3
  • Publication date: 1988/08
  • Document available for consultation in the library of the IIR headquarters only.

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