An Experimental Study on the Effect of Shape and Location of Vortex Generators Ahead of a Heat Exchanger

Wisam Abed Kattea

Article Details

An Experimental Study on the Effect of Shape and Location of Vortex Generators Ahead of a Heat Exchanger

Authors:

Wisam Abed Kattea

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.8 Issue 2, pp.12-29

Document Type:

Article

Publication Date:

5/2012

Document Language:

English

Document ID (Org No.):

2001539187

pISSN:

2312-0789

Keywords:

Abstract:

 An experimental study is carried out on the effect of vortex generators (Circular and square) on the flow and heat transfer at variable locations at (X = 0.5, 1.5, 2.5 cm) ahead of a heat exchanger with Reynolds number ranging from 62000< Re < 125000 and heat flux from 3000 ≤ q ≤ 8000 W/m2 .
In the experimental investigation, an apparatus is set up to measure the velocity and temperatures around the heat exchanger.                     
The results show that there is an effect for using vortex generators on heat transfer. Also, heat transfer depends on the shape and location. The circular is found to be the best shape for enhancing heat transfer at location [Xm=0.5 cm] distance before heat exchanger is the best location for enhancing heat transfer. The square is the best shape for enhancing heat transfer at location [Xm=2.5 cm] distance before heat exchanger is the best location for enhancing heat transfer.
The results of flow over heat exchanger with vortex generators are compared with the flow over heat exchanger without vortex generators. Heat transfer around heat exchanger is enhanced (56%, 50%, 36%) at location            (X=0.5, 1.5, 2.5cm) respectively by using circular vortex generators without turbulator and heat transfer around heat exchanger is enhanced (39%, 42%, 51%) at location (X=0.5, 1.5, 2.5cm) respectively by using square shape vortex generators without turbulator.

Article Details

An Experimental Study on the Effect of Shape and Location of Vortex Generators Ahead of a Heat Exchanger

Authors:

Wisam Abed Kattea

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.8 Issue 2, pp.12-29

Document Type:

Article

Publication Date:

5/2012

Document Language:

English

Document ID (Org No.):

2001539187

pISSN:

2312-0789

Vortex generator

VGs

NUX

Local nusselt number heat exchanger

vortex flow

heat transfer

Issues

Article Details

An Experimental Study on the Effect of Shape and Location of Vortex Generators Ahead of a Heat Exchanger

Authors: Wisam Abed Kattea

Publisher: University of Baghdad

Journal: Al-Khwarizmi Engineering Journal Vol.8 Issue 2, pp.12-29

Document Type: Article

Publication Date: 5/2012

Document Language: English

Document ID (Org No.): 2001539187

pISSN: 2312-0789

Vortex generator

VGs

NUX

Local nusselt number heat exchanger

vortex flow

heat transfer

Issues

Authors:

Wisam Abed Kattea

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.8 Issue 2, pp.12-29

Document Type:

Article

Publication Date:

5/2012

Document Language:

English

Document ID (Org No.):

2001539187

pISSN:

2312-0789