In this paper, the hydrodynamic and thermal performance of a miniature plate pin-finned heat sink is investigated experimentally by utilizing two widely used nanofluids, Al2O3–water and TiO2–water. The heat sink base plate, which is used in the cooling process of electronic devices, has the dimensions of 42 mm (L) × 42 mm (W) × 14 mm (H) and is made of aluminum and placed in a plexiglass case which is isolated from the environment using an insulator foam. The thermal performance of the heat sink is investigated by passing the nanofluid at constant inlet temperature while applying a constant heat flux of 124.8 kW/m2 to the bottom surface of the heat sink. The nanofluids are prepared in volume concentrations of 0.5, 1, 1.5, and 2% and their performances are measured considering water as the base fluid. Measuring the pressure difference between the entrance and exit of the heat sink made it possible to study the hydrodynamic performance of the heat sink. Although the measurements showed 15% and 30% increase in the pumping power for the volume concentration of 2% of Al2O3–water and TiO2–water nanofluids, respectively, the average heat transfer coefficients increased by 16% and 14% and the thermal resistance decreased by 17% and 14% for each nanofluid.
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September 2015
Research-Article
Hydrodynamics and Heat Transfer Characteristics of a Miniature Plate Pin-Fin Heat Sink Utilizing Al2O3–Water and TiO2–Water Nanofluids
Majid Roshani,
Majid Roshani
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: m_rowshani90@ut.ac.ir
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,Tehran 11155-4563
, Iran
e-mail: m_rowshani90@ut.ac.ir
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Seyed Ziaeddin Miry,
Seyed Ziaeddin Miry
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: z.miry@ut.ac.ir
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,Tehran 11155-4563
, Iran
e-mail: z.miry@ut.ac.ir
Search for other works by this author on:
Pedram Hanafizadeh,
Pedram Hanafizadeh
Assistant Professor
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: hanafizadeh@ut.ac.ir
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,P.O. Box: 11155-4563
,Tehran 11155-4563
, Iran
e-mail: hanafizadeh@ut.ac.ir
Search for other works by this author on:
Mehdi Ashjaee
Mehdi Ashjaee
Professor
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: ashjaee@ut.ac.ir
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,P.O. Box: 11155-4563
,Tehran 11155-4563
, Iran
e-mail: ashjaee@ut.ac.ir
Search for other works by this author on:
Majid Roshani
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: m_rowshani90@ut.ac.ir
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,Tehran 11155-4563
, Iran
e-mail: m_rowshani90@ut.ac.ir
Seyed Ziaeddin Miry
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: z.miry@ut.ac.ir
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,Tehran 11155-4563
, Iran
e-mail: z.miry@ut.ac.ir
Pedram Hanafizadeh
Assistant Professor
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: hanafizadeh@ut.ac.ir
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,P.O. Box: 11155-4563
,Tehran 11155-4563
, Iran
e-mail: hanafizadeh@ut.ac.ir
Mehdi Ashjaee
Professor
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
e-mail: ashjaee@ut.ac.ir
Center of Excellence in Design
and Optimization of Energy Systems (CEDOES),
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,P.O. Box: 11155-4563
,Tehran 11155-4563
, Iran
e-mail: ashjaee@ut.ac.ir
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received September 14, 2014; final manuscript received February 26, 2015; published online April 15, 2015. Assoc. Editor: Zahid Ayub.
J. Thermal Sci. Eng. Appl. Sep 2015, 7(3): 031007 (12 pages)
Published Online: September 1, 2015
Article history
Received:
September 14, 2014
Revision Received:
February 26, 2015
Online:
April 15, 2015
Citation
Roshani, M., Ziaeddin Miry, S., Hanafizadeh, P., and Ashjaee, M. (September 1, 2015). "Hydrodynamics and Heat Transfer Characteristics of a Miniature Plate Pin-Fin Heat Sink Utilizing Al2O3–Water and TiO2–Water Nanofluids." ASME. J. Thermal Sci. Eng. Appl. September 2015; 7(3): 031007. https://doi.org/10.1115/1.4030103
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