Numerical investigation of effect of different parameter on heat transfer  for a crossflow heat exchanger by using nanofluids

Mustafa KILIC; Atta ULLAH

doi:https://doi.org/10.18186/thermal.1051287

Article Details

Numerical investigation of effect of different parameter on heat transfer for a crossflow heat exchanger by using nanofluids

Authors:

Mustafa KILIC | Atta ULLAH

Publisher:

Yildiz Technical University

Main Topics:

Heat

Journal:

Journal of Thermal Engineering 2021 Vol.7 Issue Supp 14, pp.1980-1989

Document Type:

Article

Publication Date:

12/2021

Document Language:

English

Document ID (Org No.):

2000504805

Frequency:

Bimonthly

eISSN:

2148-7847

DOI:

https://doi.org/10.18186/thermal.1051287

Abstract:

 

The heat loads on electronic systems of an unmanned air vehicle are a significant problem. So enhancing heat transfer is a critical key to solve these thermal problems. This study is focused on increasing heat transfer rate in a crossflow heat exchanger by using nanofluids numerically. Effects of different Reynolds number of hot fluid (Re= 6000, 8000, 10000, 12000), different inlet velocity (Vair,inlet=30, 45, 60, 90 m/s) of cooling fluid, temperature of cooling air at different altitude (Tair,inlet=15, 10, 4, -17℃) and different types of nanofluids (Cu-H2O, CuO-H2O, TiO2-H2O, H2O) on heat transfer were studied numerically. Realizable k-ε turbulence model of ANSYS FLUENT computational fluid dynamics code was used for numerical analysis. It was obtained that increasing Reynolds number from Re=6000 to 12000 causes an increase of 44.65% on average Nusselt Number. Increasing inlet velocity of cooling air from 30 m/s to 90 m/s causes an increase of 6.96% on average Nusselt number. Increasing or decreasing air inlet temperature at different attitude does not cause any significant change on average Nusselt number. Using Cu-H2O nanofluid, which shows the best performance, causes an increase of 6.63% on average Nusselt number according H2O. Numerical results were also compared with experimental results at literature. It was obtained that numerical model can represent experimental results in a good level.

Article Details

Numerical investigation of effect of different parameter on heat transfer for a crossflow heat exchanger by using nanofluids

Authors: Mustafa KILIC | Atta ULLAH

Publisher: Yildiz Technical University

Main Topics: Heat

Journal: Journal of Thermal Engineering 2021 Vol.7 Issue Supp 14, pp.1980-1989

Document Type: Article

Publication Date: 12/2021

Document Language: English

Document ID (Org No.): 2000504805

Frequency: Bimonthly

eISSN: 2148-7847

DOI: https://doi.org/10.18186/thermal.1051287

Issues

Authors:

Mustafa KILIC | Atta ULLAH

Publisher:

Yildiz Technical University

Main Topics:

Heat

Journal:

Journal of Thermal Engineering 2021 Vol.7 Issue Supp 14, pp.1980-1989

Document Type:

Article

Publication Date:

12/2021

Document Language:

English

Document ID (Org No.):

2000504805

Frequency:

Bimonthly

eISSN:

2148-7847

DOI:

https://doi.org/10.18186/thermal.1051287