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

Translated title of the contribution: Thermal Analysis on Non-Newtonian Nanofluid in Double Tube Heat Exchanger with Staggered Oval Cross-section Pipe as Inner Pipe

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

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Translated title of the contributionThermal Analysis on Non-Newtonian Nanofluid in Double Tube Heat Exchanger with Staggered Oval Cross-section Pipe as Inner Pipe
Original languageChinese (Traditional)
Pages (from-to)699-712
Number of pages14
JournalJournal 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
Volume41
Issue number6
Publication statusPublished - 2020 Dec

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Thermal Analysis on Non-Newtonian Nanofluid in Double Tube Heat Exchanger with Staggered Oval Cross-section Pipe as Inner Pipe'. Together they form a unique fingerprint.

Cite this