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TRANSIENT BOILING HEAT TRANSFER CHARACTERISTICS OF NITROGEN (BUBBLE BEHAVIOUR AND HEAT TRANSFER RATE AT STEPWISE HEAT GENERATION).

Author(s) : OKUYAMA K., IIDA Y.

Type of article: Article

Summary

A SERIES OF HEAT TRANSFER EXPERIMENTS ARE CARRIED OUT USING A 0.10 MM DIAMETER HORIZONTAL PLATINUM WIRE AS THE TEST HEATER. THE HISTORY OF HEAT TRANSFER RATE CORRESPONDS WELL WITH THE BUBBLE BEHAVIOUR DURING THE TRANSITION STAGE TO FILM BOILING. IN THE CASE OF A LOW HEAT GENERATION RATE, BOILING TRANSITION OCCURS DUE TO THE COALESCENCE OF NUCLEATE BOILING BUBBLES. IN THE CASE OF A HIGH HEAT GENERATION RATE, A VAPOUR SHEATH GROWS ALONG THE HEATER WIRE. IN THE CASE OF AN EXTREMELY HIGH HEAT GENERATION RATE, A LOT OF FINE BUBBLES GROW RAPIDLY AND SIMULTANEOUSLY WHEN THE HEATER TEMPERATURE REACHES THE HOMOGENEOUS NUCLEATIONTEMPERATURE.

Details

  • Original title: TRANSIENT BOILING HEAT TRANSFER CHARACTERISTICS OF NITROGEN (BUBBLE BEHAVIOUR AND HEAT TRANSFER RATE AT STEPWISE HEAT GENERATION).
  • Record ID : 1991-1502
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 33 - n. 10
  • Publication date: 1990/10

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