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VARIATION OF SUPERHEAT WITH SUBCOOLING IN NUCLEATE POOL BOILING.

Author(s) : JUDD R. L., MERTE H. Jr, ULUCAKLI M. E.

Type of article: Article

Summary

SUPERHEAT INITIALLY INCREASES WITH INCREASING SUBCOOLING NEAR SATURATED CONDITIONS BECAUSE OF THE WAY IN WHICH CHANGES IN ACTIVE SITE DENSITY AND AVERAGE BUBBLE FREQUENCY WITH INCREASING SUBCOOLING AFFECT THE RATE OF HEAT REMOVAL FROM THE HEATER SURFACE BY ENTHALPY TRANSPORT AND MICROLAYER EVAPORATION. AS SUBCOOLING INCREASES FURTHER, NATURAL CONVECTION BEGINS TO PLAY AN INCREASINGLY IMPORTANT ROLE IN THE HEAT TRANSFER PROCESS. ULTIMATELY, NATURAL CONVECTION IS ABLE TO ACCOMMODATE THE ENTIRE IMPOSED HEAT FLUX, AFTER WHICH SUPERHEATDECREASES AS SUBCOOLING INCREASES.

Details

  • Original title: VARIATION OF SUPERHEAT WITH SUBCOOLING IN NUCLEATE POOL BOILING.
  • Record ID : 1992-0141
  • Languages: English
  • Source: J. Heat Transf. - vol. 113 - n. 1
  • Publication date: 1991/02
  • Document available for consultation in the library of the IIR headquarters only.

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