CI-2636 — Augmentation of In-Tube Condensation of R-113 by Means of Surface Roughness
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:
- This product is unavailable in Russia, Belarus
