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Experimental Investigation of Thermal Resistance of a Ferrofluidic Closed-Loop Pulsating Heat Pipe

Maziar MohammadiCenter of Excellence in Energy Conversion, School of Mechanical Engineering , Sharif University of Technology , Tehran , IranMohammad MohammadiCenter of Excellence in Energy Conversion, School of Mechanical Engineering , Sharif University of Technology , Tehran , IranAmir R. GhahremaniCenter of Excellence in Energy Conversion, School of Mechanical Engineering , Sharif University of Technology , Tehran , IranMohammad Behshad ShafiiCenter of Excellence in Energy Conversion, School of Mechanical Engineering , Sharif University of Technology , Tehran , IranNiloofar MohammadiCenter of Excellence in Energy Conversion, School of Mechanical Engineering , Sharif University of Technology , Tehran , Iran

2013en

ABI

Annotatsiya

For the present article, a pulsating heat pipe (PHP) is fabricated and tested experimentally by bending a copper tube. The effects of working fluid, heat input, charging ratio, inclination angle, magnets location, and ferrofluid (magnetic nanofluid) volumetric concentration have been investigated on the thermal performance of this PHP. Experimental results show that using ferrofluid as a working fluid improves the thermal performance of the PHP significantly. Moreover, applying a magnetic field on a ferrofluidic PHP reduces its thermal resistance. By changing the inclination angle of the PHP from vertical mode to angles close to the horizontal mode, the present PHP has a constant and acceptable thermal performance. Reduction of the magnetic flux density at the evaporator decreases the PHP's thermal performance as well. Increasing the ferrofluid volumetric concentration in the experimental range enhances the thermal performance of the PHP.

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Identifikatorlar

DOI: 10.1080/01457632.2013.810086

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