CI-2636 — Augmentation of In-Tube Condensation of R-113 by Means of Surface Roughness

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This paper is the third and final report of a study on the augmentation of in-tube condensation. Experimental results are presented for condensation of R-113 in two tubes with helical repeated-rib internal roughness and for a third spirally fluted tube. The repeated-rib tubes increased average heat transfer coefficients about 80% above smooth tube values, while improvements in heat transfer coefficients for the spirally fluted tube were approximately 50% (maximum inside diameter basis). The pressure drop increase in both types of tubes was less than 50%. A correlation is developed for the repeated-rib tube data. The various augmented tubes considered in this study are compared by a standard performance evaluation criterion.

Product Details

Published:

1981

Number of Pages:

18

File Size:

1 file , 1.5 MB

Product Code(s):

D-CI-81-2636

Note:

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