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Review Article

Convective Heat Transfer Enhancement Using Ferrofluid: A Review

[+] Author and Article Information
Jaswinder Singh Mehta

Department of Mechanical Engineering,
UIET,
Panjab University,
Sec 25,
Chandigarh 160014, India
e-mail: jsmehta@pu.ac.in

Rajesh Kumar

Department of Mechanical Engineering,
UIET,
Panjab University,
Sec 25,
Chandigarh 160014, India
e-mail: rajeshmadan@pu.ac.in

Harmesh Kumar

Department of Mechanical Engineering,
UIET,
Panjab University,
Sec 25,
Chandigarh 160014, India
e-mail: harmeshkansal@gmail.com

Harry Garg

Optical Devices and Systems,
Central Scientific Instruments Organisation,
Chandigarh 160014, India
e-mail: harry.garg@gmail.com

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received December 23, 2016; final manuscript received June 7, 2017; published online August 29, 2017. Assoc. Editor: Amir Jokar.

J. Thermal Sci. Eng. Appl 10(2), 020801 (Aug 29, 2017) (12 pages) Paper No: TSEA-16-1383; doi: 10.1115/1.4037200 History: Received December 23, 2016; Revised June 07, 2017

Ferrofluids, a distinctive class of nanofluid, consists of suspension of magnetic nanoparticles in a nonmagnetic base fluid. Flow and heat transport properties of such a fluid can be manipulated when subjected to external magnetic field and temperature gradient. This unique feature has fascinated researchers across the globe to test its capability as a coolant for miniature electronic devices. The proposed work presents an updated and comprehensive review on ferrofluids with emphasis on heat transfer enhancement of microdevices. Based on the research findings, a number of important variables that have direct bearing on convective heat transport ability of ferrofluid have been recognized. The paper also identifies the key research challenges and opportunities for future research. By critically resolving these challenges, it is anticipated that ferrofluids can make substantial impact as coolant in miniature heat exchangers.

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References

Figures

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Fig. 1

Components of ferrofluid

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Fig. 2

Effect of temperature on magnetization

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Fig. 3

Thermomagnetic convection principle

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Fig. 4

(a) Enhancement of heat transfer coefficient measured as ratio of h/hpure water for different heat fluxes at flow rate, Q = 0.36 ml/s [34] and (b) enhancement of heat transfer coefficient measured as ratio of h/hpure water for different heat fluxes at flow rate, Q = 1 ml/s [34]

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Fig. 5

(a) Increase in surface temperature with respect to ambient temperature for different heat fluxes at flow rate, Q = 0.36 ml/s [34] and (b) increase in surface temperature with respect to ambient temperature for different heat fluxes at flow rate, Q = 1 ml/s [34]

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Fig. 6

Percentage enhancement of heat transfer as a function of dilution amount at different flow rates, Q [34]

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Fig. 7

Effect of applying nonuniform transverse magnetic field with different intensities on the average Nusselt number [39]

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Fig. 8

Effect of applying nonuniform transverse magnetic field on the friction factor along the channel length [39]

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