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EFFECT OF SURFACE CONFIGURATION ON NUCLEATE BOILING HEAT TRANSFER.

Author(s) : NISHIKAWA K.

Type of article: Article

Summary

AN EXPERIMENT OF NUCLEATE POOL BOILING OF WATER AT ATMOSPHERIC PRESSURE FROM A COPPER FLAT PLATE WHOSE ORIENTATION IS VARIED FROM 0 TO 175 DEGREES IS PERFORMED. THE EFFECT OF SURFACE ORIENTATION IS REMARKABLE IN THE LOW HEAT FLUX REGION WHERE THE HEAT TRANSFER COEFFICIENT INCREASES AS THE INCLINATION ANGLE IS INCREASED. THERE IS NO MARKED EFFECT IN THE HIGH FLUX REGION. THE AUTHORS PROPOSED TWO MECHANISMS OF THE SENSIBLE HEAT TRANSPORT BY COMPULSORY REMOVAL OF THE THERMAL LAYER BY THE RISING BUBBLE AND THE LATENT HEAT TRANSPORT BY EVAPORATION FROM THIN LIQUID FILM UNDERNEATH THE RISING BUBBLE. THE LATTER CONTRIBUTION BECOMES MORE PREDOMINANT AT LARGE INCLINATION ANGLES.

Details

  • Original title: EFFECT OF SURFACE CONFIGURATION ON NUCLEATE BOILING HEAT TRANSFER.
  • Record ID : 1985-0988
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 27 - n. 9
  • Publication date: 1984

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