Nanofluid heat transfer and entropy generation through a heat exchanger considering a new turbulator and CuO nanoparticles

被引：0
作者：
M. Sheikholeslami
M. Jafaryar
Ahmad Shafee
Zhixiong Li
机构：
[1] Babol Noshirvani University of Technology,Department of Mechanical Engineering
[2] Babol Noshirvani University of Technology,Renewable Energy Systems and Nanofluid Applications in Heat Transfer Laboratory
[3] MR CFD LLC,FAST
[4] University Tun Hussein Onn Malaysia,Applied Science Department, College of Technological Studies
[5] Public Authority of Applied Education and Training,School of Engineering
[6] Ocean University of China,School of Mechanical, Materials, Mechatronic and Biomedical Engineering
[7] University of Wollongong,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 2018年 / 134卷
关键词：
Nanofluid; Heat transfer; Passive technique; Heat exchanger; Entropy generation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this research, a numerical macroscopic approach has been employed to analyze nanofluid entropy generation and turbulent flow through a circular heat exchanger with an innovative swirl flow device. A homogenous model was considered for nanofluid. Minimizing entropy generation can be considered as a very important goal for designing a heat exchanger, so we focus on this factor in the present attempt. Simulations were presented to show the influences of the geometric parameter (revolution angle) and inlet velocity on hydrothermal and second-law treatment. Related correlations for thermal and frictional entropy parameters as well as Bejan number have been presented. Outputs reveal that augmenting revolution angle increases the frictional entropy generation. Increasing secondary flows leads to a reduction in thermal entropy generation due to a decrement in thermal boundary layer thickness. By improving convective flow, Bejan number reduces.
引用
收藏
页码：2295 / 2303
页数：8
相关论文
共 149 条
  • [1] Rashidi S(2018)Applications of nanofluids in condensing and evaporating systems J Therm Anal Calorim 131 2027-2039
  • [2] Mahian O(2018)Numerical simulation for solidification in a LHTESS by means of Nano-enhanced PCM J Taiwan Inst Chem Eng 86 25-41
  • [3] Mohseni Languri E(2018)Solidification of NEPCM under the effect of magnetic field in a porous thermal energy storage enclosure using CuO nanoparticles J Mol Liq 263 303-315
  • [4] Sheikholeslami M(2018)Experimental investigation for entropy generation and exergy loss of nano-refrigerant condensation process Int J Heat Mass Transf 125 1087-1095
  • [5] Sheikholeslami M(2018)Nanofluid turbulent flow in a pipe under the effect of twisted tape with alternate axis J Therm Anal Calorim 336 131-143
  • [6] Sheikholeslami M(2018)CuO–water nanofluid flow and heat transfer in a heat exchanger tube with twisted tape turbulator Powder Technol 42 15925-15932
  • [7] Darzi M(2017)MHD mixed convection flow along a vertically heated sheet J Hydrogen Energy 126 156-163
  • [8] Li Z(2018)Experimental research on stabilities, thermophysical properties and heat transfer enhancement of nanofluids in heat exchanger systems Chin J Chem Eng 112 509-520
  • [9] Jafaryar M(2018)Nanofluid heat transfer augmentation and exergy loss inside a pipe equipped with innovative turbulators Int J Heat Mass Transf 45 795-814
  • [10] Sheikholeslami M(2017)Numerical simulation and sensitivity analysis of heat transfer enhancement in a flat heat exchanger tube with discrete inclined ribs Int J Heat Mass Transf 100 448-456
12345678910