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EFFECT OF SURFACE FOULING ON THE HEAT TRANSFER TO REFRIGERANTS EVAPORATING IN A HORIZONTAL SMOOTH TUBE.

[In Japanese. / En japonais.]

Author(s) : TAKAMATSU H.

Type of article: Article

Summary

A COMPARISON OF HEAT TRANSFER COEFFICIENT BETWEEN A CLEAN AND FOULED TUBE IS MADE ON THE EVAPORATION OF R22, R134A, R12 AND R114 IN A SMOOTH TUBE. THE HEAT TRANSFER COEFFICIENT OF A FOULED TUBE IS ABOUT 1.5-2 TIMES AS LARGE AS THAT OF A CLEAN TUBE FOR THE SAME PRESSURE, MASS VELOCITY, HEAT FLUX AND QUALITY. HOWEVER, AT LOW HEAT FLUX AND HIGH QUALITY REGION IN THE PARALLEL FLOW, THE HEAT TRANSFER COEFFICIENT OF A CLEAN TUBE IS SLIGHTLY HIGHER THAN THAT OF A FOULED TUBE.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1992-1066
  • Languages: Japanese
  • Source: Trans. JAR - vol. 8 - n. 1
  • Publication date: 1991
  • Document available for consultation in the library of the IIR headquarters only.

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