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HEAT TRANSFER AND TWO-PHASE FLOW DURING CONVECTIVE BOILING IN A PARTIALLY-HEATED CROSS-RIBBED CHANNEL.

Author(s) : XU X., CAREY V. P.

Type of article: Article

Summary

MEASURED LOCAL HEAT TRANSFER DATA AND VISUAL OBSERVATIONS OF THE TWO-PHASE FLOW BEHAVIOUR ARE REPORTED FOR CONVECTIVE BOILING OF SATURATED LIQUIDS IN A CROSS-RIBBED CHANNEL SIMILAR TO GEOMETRIES USED IN FORMED-PLATE COMPACTHEAT EXCHANGERS. ONE WALL OF THE CHANNEL WAS HEATED WHILE THE OPPOSITE AND LATERAL WALLS WERE ADIABATIC. MEASURED LOCAL HEAT TRANSFER COEF-FICIENTS WERE OBTAINED FOR CONVECTIVE BOILING OF METHANOL AND N-BUTANOL AT ATMOSPHERIC PRESSURE WITH THE CHANNEL ORIENTED VERTICALLY AND IN HORIZONTAL POSITIONS WITH TOP HEATING, SIDE HEATING AND BOTTOM HEATING OF THE CHANNEL. AT MODERATE TO HIGH QUALITIES, THE MEASURED CONVECTIVE BOILING HEAT TRANSFER COEFFICIENTS FOR THEVERTICAL AND HORIZONTAL ORIENTATIONS WERE USUALLY FOUND TO DIFFER BY ONLY A SMALL AMOUNT. FOR SOME ORIENTATIONS, PARTIAL DRYOUT OF THE HEATED WALL WAS SOMETIMES OBSERVED.

Details

  • Original title: HEAT TRANSFER AND TWO-PHASE FLOW DURING CONVECTIVE BOILING IN A PARTIALLY-HEATED CROSS-RIBBED CHANNEL.
  • Record ID : 1988-1381
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 30 - n. 11
  • Publication date: 1987

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