Share

Heat transfer augmentation by inserts during condensation of refrigerant R-22 inside a horizontal tube.

Author(s) : SHRIVASTAVA R., KUMAR R., GUPTA A., et al.

Summary

In this paper, the enhancement in heat transfer has been studied for the forced-convection condensation of R-22 saturated vapour inside a tube in the presence of twisted tape inserts. The test condenser is constituted by four test sections connected in series. Each test-section has an inside diameter of 12.7 mm and the length of 950 mm. Three twisted tape inserts with the twist ratio of 15, 9 and 6 were put, one by one, in the test condenser. The insert with twist ratio of 6 gave the best performance and enhanced the average heat transfer coefficient by 25% as compared to the plain flow. The segmented tapes of best performing twist ratio of 6 were inserted one at a time in the test condenser. The length of segmented tape inserts was taken as 1/4, 1/2, and 3/4 of the total length of the test condenser. The refrigerant flow rate has been taken as 237 kg/s-m2.

Available documents

Format PDF

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Heat transfer augmentation by inserts during condensation of refrigerant R-22 inside a horizontal tube.
  • Record ID : 2007-1457
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

Links


See other articles from the proceedings (157)
See the conference proceedings

Indexing