Design of heat exchanger with combined turbulator

Authors

Truong Khang Nguyen, Ton Duc Thang University
M Sheikholeslami, Babol Noshirvani University of Technology
M Jafaryar, MR-CFD LLC
Ahmad Shafee, College of Technological Studies
Zhixiong Li, Ocean University of China, University of WollongongFollow
Kotturu Chandra Mouli, Majmaah University
I Tlili, Majmaah University

RIS ID

136418

Publication Details

Nguyen, T., Sheikholeslami, M., Jafaryar, M., Shafee, A., Li, Z., Chandra Mouli, K. V. V. & Tlili, I. (2019). Design of heat exchanger with combined turbulator. Journal of Thermal Analysis and Calorimetry: an international forum for thermal studies, Online First 1-11.

Abstract

In this article, influence of inserting new turbulator on resistance and heat transfer behaviors of a pipe has been analyzed. This kind of turbulator can be utilized for retrofit applications. Turbulent nanofluid flow is imposed. Homogenous approach for nanofluid and k-ɛ approach for turbulent modeling were involved. Contours are presented for different inlet velocity and pitch ratio. Results indicated that the lower the pitch ratio, the better is the temperature gradient. Nanofluid transfers more heat with decline of pitch ratio because of lower generation of longitudinal disturbance. As inlet velocity augments and pitch ratio decreases, nanofluid can scour the wall more easily and heat transfer rate is strengthened.