Full Content is available to subscribers

Subscribe/Learn More  >

Heat Transfer Characteristics of Subcooled Flowing Boiling in Circular Tubes With and Without Swirl Tapes Under High Heat Fluxes

[+] Author Affiliations
Jianguo Yan, Qincheng Bi, Ge Zhu, Haicai Lv

Xi’an Jiaotong University, Xi’an, Shaanxi, China

Yajun Guo

Xi’an University of Architecture and Technology, Xi’an, Shaanxi, China

Paper No. ICONE22-30543, pp. V02BT09A003; 9 pages
  • 2014 22nd International Conference on Nuclear Engineering
  • Volume 2B: Thermal Hydraulics
  • Prague, Czech Republic, July 7–11, 2014
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4591-2
  • Copyright © 2014 by ASME


Experiments of heat transfer and flow characteristics of subcooled water flowing in circular tubes, with and without swirl tapes, at high heat fluxes (ITER levels) were carried out at Xi’an Jiaotong University. Test sections of vertical tubes with an inner diameter of 9.0mm were electrically heated and water flow upwards. Two types swirl tapes were used with twist ratios of 2 and 4. Wall temperature distributions, critical heat fluxes and pressure drops were obtained during the experiment. The main attentions were paid to the effects of swirl tapes on enhancing the heat transfer and postponing the departure from nucleate boiling (DNB). The test parameters were as follows, heat flux (q)=10, 15MW/m2, pressure (P)=3, 4.2, 5MPa, mass flow rates (G)=6000, 8000kg/m2s, bulk temperature (Tb)=25–247 °C. Compared with the smooth tube, the experimental results showed that the swirl tapes can improve the heat transfer performance slightly while the pressure drops increase greatly. However, the DNB can be remarkably postponed with the swirl tapes, which is of vital practical significance to ITER. In addition, it was interesting to find that harsh boiling noise, which could be caused by microbubble emission boiling (MEB), and some inner surface of the tube was damaged, looks like cavitation erosion.

Copyright © 2014 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In