Thermal Analysis on Non-Newtonian Nanofluid in Double Tube Heat Exchanger with Staggered Oval Cross-section Pipe as Inner Pipe

貢獻的翻譯標題: 非牛頓奈米流體在交叉橢圓套管中熱交換之數值模擬研究

Chen Hsin Lin, Cha'o Kuang Chen, Chieh Li Chen

研究成果: Article同行評審


In this study, a numerical simulation is used to analyze heat-exchange behaviors of a double tube heat exchanger with a staggered oval cross-section pipe as the inner pipe. In addition, non-Newtonian nanofluid and water are considered to be the working fluid, respectively flowing in the inner tube and outer tube. The non-Newtonian nanofluid is composed of non-Newtonian base fluid and nanoparticle. Besides, a single-phase fluid model was adopted. The purpose of this study is to investigate the heat exchange behavior of non-Newtonian nanofluid concerning different flow behavior index, the inlet velocity and nanoparticle volume fraction. Therefore, the velocity distribution, isotherms contours, synergy angle distribution, the Nusselt number, pressure drop and performance evaluation criterion (PEC) had been studied and calculated. It can be discovered that the heat transfer performance becomes better when the flow behavior index decreases; the inlet velocity of the inner pipe decreases; the inlet velocity of the outer pipe increases and nanoparticle volume fraction decreases.

頁(從 - 到)699-712
期刊Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
出版狀態Published - 2020 12月

All Science Journal Classification (ASJC) codes

  • 機械工業