Share

A COMPARISON OF THE FLOW BOILING PERFORMANCE CHARACTERISTICS OF PARTIALLY-HEATED CROSS-RIBBED CHANNELS WITH DIFFERENT RIB GEOMETRIES.

Author(s) : COHEN M, CAREY V. P.

Type of article: Article

Summary

MEASURED LOCAL HEAT TRANSFER DATA AND THE RESULTS OF FLOW VISUALIZATION EXPERIMENTS ARE REPORTED FOR CONVECTIVE BOILING OF R113 AND METHANOL IN VERTICAL CROSS-RIBBED CHANNELS SIMILAR TO GEOMETRIES USED IN FORMED-PLATE COMPACT HEAT EXCHANGERS. HEAT TRANSFER DATA ARE OBTAINED FOR 3 DIFFERENT RIB CROSSING PATTERNS AT COOLANT MASS FLUX VALUES BETWEEN 40 AND 230 KG. M2/S AND MASS QUALITIESBETWEEN 0.10 AND 0.80. VARIATIONS OF THE RIB SPACING AND ANGLE HAVE A SIGNIFICANT EFFECT ON BOILING HEAT TRANSFER PERFORMANCE. THE SWIRL AND AGITATION INDUCED BY THE RIBS ARE FOUND TO INCREASE THE CONVECTIVE BOILING HEAT TRANSFER COEFFICIENT BY AS MUCH AS A FACTOR OF 4 ABOVE THAT FOR A ROUND TUBE.

Details

  • Original title: A COMPARISON OF THE FLOW BOILING PERFORMANCE CHARACTERISTICS OF PARTIALLY-HEATED CROSS-RIBBED CHANNELS WITH DIFFERENT RIB GEOMETRIES.
  • Record ID : 1990-1395
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 32 - n. 12
  • Publication date: 1989/12

Links


See other articles in this issue (3)
See the source

Indexing