Conjugate Cooling of a Protruding Heater in a Channel with Distinct Flow Constraints

Thiago Antonini Alves; Carlos A.C. Altemani

Conjugate Cooling of a Protruding Heater in a Channel with Distinct Flow Constraints

Thiago Antonini Alves * §

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Carlos A.C. Altemani

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§ Universidade TecnolAgica Federal do ParanA - UTFPR/P...

Conjugate Cooling of a Protruding Heater in a Channel with Distinct Flow Constraints

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Abstract

The conjugate cooling of a single block heater mounted on a conductive wall of a parallel plates channel was investigated under distinct laminar airflow constraints: fixed flow rate, fixed channel flow pressure drop and fixed pumping power. The heater was cooled by direct forced convection to the airflow and by conduction through its contact with the channel wall. The investigation was performed for a twodimensional configuration with fixed channel geometry and variable heater height. At the channel entrance the flow velocity and temperature were uniform. The channel wall thickness was constant and its thermal conductivity ranged from 0 to 80 that of the air, while the heater thermal conductivity was equal to 500 that of the air. The conservation equations were solved numerically by the control volumes method with the SIMPLE algorithm. The results were expressed in dimensionless form, considering the three distinct flow constraints. For a fixed flow rate, the heater temperature always decreased as the heater height increased. For the other two flow constraints, there is a critical relative heater height which minimizes its thermal resistance to the airflow. The results also indicated that for a conductive substrate, the conduction from the heater to the substrate plate cannot be neglected in comparison to the direct convective cooling to the airflow.

References

13 Cites in Article

Reference Format

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Thiago Antonini Alves, Carlos A.C. Altemani. 2014. "Conjugate Cooling of a Protruding Heater in a Channel with Distinct Flow Constraints". Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 13 (GJRE Volume 13 Issue A11).

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

conductive substrate distinct flow constraints expressed in dimensionless form

Classification

GJRE-A Classification FOR Code: 290501

Submission ReceivedDecember 10, 2012
Peer Review Double Blind
Handling Editor
Accepted January 5, 2013
Published January 15, 2013

Version of record

v1.2

Issue date

January 28, 2014

Language

English

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Article Matrices

Total Score: 102

Country: Brazil

Subject: Global Journal of Research in Engineering

Authors: Thiago Antonini Alves, Carlos A.C. Altemani (PhD/Dr. count: 0)

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