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EXPERIMENTAL INVESTIGATION OF NUCLEATE BOILING INCIPIENCE WITH A HIGHLY-WETTING DIELECTRIC FLUID (R113).

Author(s) : YOU S. M.

Type of article: Article

Summary

EXPERIMENTS ON POOL BOILING IN SATURATED R113 AT 1 ATM PRESSURE ARE CONDUCTED TO INVESTIGATE ANOMALIES ASSOCIATED WITH THE INITIATION OF BOILING USING HORIZONTAL, 0.13 MM DIAMETER CHROMEL WIRES AND A 0.51 MM DIAMETER, PLATINUM THIN-FILM HEATER. WALL INCIPIENCE SUPERHEAT VALUES OF UP TO 73 K AND WIDE VARIATIONS IN INCIPIENCE SUPERHEATS (MORE THAN 20 K) ARE OBSERVED. THE SIGNIFICANT INFLUENCE OF THE MINIMUM HEAT FLUX AND CORRESPONDING MINIMUM WALL SUPERHEAT (AFTER THE COOL-DOWN PORTION OF ONE RUN AND THE BEGINNING OF THE SUBSEQUENT RUN) ON THE INCIPIENCE SUPERHEAT EXCURSION IS OBSERVED. TESTS WITH LARGE STEP CHANGES IN HEAT FLUX INDICATED INCREASES IN INCIPIENCE SUPERHEAT OF AS MUCH AS 20% OVER TESTS WITH A SERIES OF INCREMENTAL STEPS UP TO THE SAME HEAT FLUX LEVEL.

Details

  • Original title: EXPERIMENTAL INVESTIGATION OF NUCLEATE BOILING INCIPIENCE WITH A HIGHLY-WETTING DIELECTRIC FLUID (R113).
  • Record ID : 1990-2295
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 33 - n. 1
  • Publication date: 1990/01

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