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EFFECT OF HEAT FLUX DENSITY AND BOILING PRESSURE ON HEAT TRANSFER IN POOL BOILING OF BINARY MIXTURES.

Author(s) : BIER K., SCHMADL J., GORENFLO D.

Type of article: Article

Summary

HEAT TRANSFER FROM A HORIZONTAL COPPER TUBE WAS MEASURED DURING HIGH-PRESSURE POOL BOILING OF BINARY MIXTURES OF SULFUR HEXAFLUORIDE (SF2 ) AND R12, R22 AND R13B1 OVER THE ENTIRE CONCENTRATION RANGE FOR A WIDE RANGE OF HEAT FLUX DENSITIES. THE REDUCTION IN THE HEAT TRANSFER TO BOILING MIXTURES COMPARED TO THAT FOR THE PURE SUBSTANCES INCREASES CONTINUOUSLY RIGHT UP TO THE CRITICAL STATE ; IT IS MORE PRONOUNCED AT HIGH HEAT FLUXES THAN AT LOW ONES. THE MAXIMUM DECREASE IN THE HEAT TRANSFER COEFFICIENT, WHICH OCCURS IN NONAZEOTROPIC MIXTURES AT MEDIUM COMPOSITIONS, CAN BE CORRELATED WITH THE DIFFERENCE IN THE CRITICAL TEMPERATURES OF THE COMPONENTS, WHEN THE HEAT FLUX DENSITY AND NORMALIZED BOILING PRESSURE ARE KEPT CONSTANT.

Details

  • Original title: EFFECT OF HEAT FLUX DENSITY AND BOILING PRESSURE ON HEAT TRANSFER IN POOL BOILING OF BINARY MIXTURES.
  • Record ID : 1985-0521
  • Languages: English
  • Source: Int. chem. Eng. - vol. 24 - n. 2
  • Publication date: 1984/04
  • Document available for consultation in the library of the IIR headquarters only.

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