SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (12): 2431-2440.DOI: 10.1016/j.cjche.2018.07.007

• Fluid Dynamics and Transport Phenomena • 上一篇    下一篇

Experimental study on thermo-hydraulic performances of nanofluids flowing through a corrugated tube filled with copper foam in heat exchange systems

Yongliang Wan1, Runhan Wu1, Cong Qi2, Gang Duan1, Ruizhao Yang1   

  1. 1 Automotive Engineering Research Institute, Shaanxi Heavy Duty Automobile Co., Ltd, Xi'an 710200, China;
    2 School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • 收稿日期:2018-04-03 修回日期:2018-06-04 出版日期:2018-12-28 发布日期:2019-01-09
  • 通讯作者: Cong Qi
  • 作者简介:Yongliang Wan,wanyl@cumt.edu.cn;Runhan Wu,wurunhan@sxqc.com;Gang Duan,duangang@sxqc.com;Ruizhao Yang,sx_yrz@163.com.
  • 基金资助:

    Supported by the National Natural Science Foundation of China (51606214).

Experimental study on thermo-hydraulic performances of nanofluids flowing through a corrugated tube filled with copper foam in heat exchange systems

Yongliang Wan1, Runhan Wu1, Cong Qi2, Gang Duan1, Ruizhao Yang1   

  1. 1 Automotive Engineering Research Institute, Shaanxi Heavy Duty Automobile Co., Ltd, Xi'an 710200, China;
    2 School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • Received:2018-04-03 Revised:2018-06-04 Online:2018-12-28 Published:2019-01-09
  • Contact: Cong Qi
  • Supported by:

    Supported by the National Natural Science Foundation of China (51606214).

摘要: Thermo-hydraulic characteristics of TiO2-water nanofluids in thin-wall stainless steel test tubes (corrugated tube and circular tube) filled with copper foam (40 PPI) are experimentally investigated and compared with those in test tubes without copper foam. The effects of nanoparticle mass concentration on flow and heat transfer performances are investigated. In addition, the mutual restriction relationships between Reynolds number (Re), Nusselt number (Nu) and resistance coefficient (f) are discussed respectively. Also, the comprehensive coefficient of performance (CCP) between heat transfer and pressure drop is evaluated. The results show that core-enhancement region for heat transfer using experimental tubes filled with copper foam is notably different from that of tubes without copper foam. There is a corresponding Reynolds number (about Re=2400) for the maximum CCP of each condition. And the heat transfer can be enhanced dramatically and sustained at 8000 ≤ Re ≤ 12000.

关键词: Nanofluids, Heat transfer enhancement, Nanoparticle, Corrugated tube

Abstract: Thermo-hydraulic characteristics of TiO2-water nanofluids in thin-wall stainless steel test tubes (corrugated tube and circular tube) filled with copper foam (40 PPI) are experimentally investigated and compared with those in test tubes without copper foam. The effects of nanoparticle mass concentration on flow and heat transfer performances are investigated. In addition, the mutual restriction relationships between Reynolds number (Re), Nusselt number (Nu) and resistance coefficient (f) are discussed respectively. Also, the comprehensive coefficient of performance (CCP) between heat transfer and pressure drop is evaluated. The results show that core-enhancement region for heat transfer using experimental tubes filled with copper foam is notably different from that of tubes without copper foam. There is a corresponding Reynolds number (about Re=2400) for the maximum CCP of each condition. And the heat transfer can be enhanced dramatically and sustained at 8000 ≤ Re ≤ 12000.

Key words: Nanofluids, Heat transfer enhancement, Nanoparticle, Corrugated tube