Field synergy analysis of six starts spiral corrugated tube under high Reynolds number

Research output: Contribution to journalArticle

Abstract

Coaxial heat exchanger is widely used in air conditioning, refrigeration etc., due to its highly efficient heat transfer performance. Spiral corrugated tube plays an important role in coaxial heat exchanger. In this paper, the numerical model of a six starts spiral corrugated tube and a smooth tube with the same size are developed. The temperature field and the velocity field of their streamline and longitudinal vortex are investigated respectively. Then, their heat transfer and pressure drop performance inside the spiral corrugated tube under different high Reynolds number is investigated by compared their Nusselt number and friction coefficient. Meanwhile, their field synergy performances with their field synergy angles are presented. The result shows that the Nusselt number and friction coefficient of spiral corrugated tube are always larger than the smooth tube, and with the increasing of Reynolds number, the heat transfer performance of SCT becomes better than smooth tube, however, the friction coefficient ratio also increases synchronously. And in spiral corrugated tube, the field synergy angel is smaller than in the smooth tube. This work can be referred by some who are also dealing with spiral corrugated tube and its heat performance research.

Details

Authors
  • Jin Yuan Qian
  • Bu Zhan Liu
  • Fu Qiang Chen
  • Xiao Fei Gao
  • Zhi Jiang Jin
External organisations
  • Zhejiang University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering
Original languageEnglish
Article number032070
JournalJournal of Physics: Conference Series
Volume745
Issue number3
Publication statusPublished - 2016 Oct 21
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes