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Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2019025541
pages 1595-1613

THERMAL PERFORMANCE OF PLATE FIN HEAT SINK COMBINED WITH COPPER FOAM

Kitti Nilpueng
Research Center for Combustion Technology and Alternative Energy (CTAE), Department of Power Engineering Technology, College of Industrial Technology, King Mongkut's University of Technology North Bangkok, Bangkok 10800, Thailand
Jafar Amani
Ragheb Isfahani Higher Education Institute, Isfaham Iran
Ahmet Selim Dalkilic
Heat and Thermodynamics Division, Department of Mechanical Engineering, Faculty of Mechanical Engineering, Yildiz Technical University, Yildiz, Istanbul, 34349, Turkey
Lazarus Godson Asirvatham
Department of Mechanical and Aerospace Engineering, Karunya Institute of Technology and Sciences, Coimbatore, 641114, India
Omid Mahian
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China; Department of Mechanical Engineering, Ouchan University of Technology, Ouchan, Iran
Somchai Wongwises
Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok, 10140, Thailand; The Academy of Science, The Royal Society of Thailand, Sanam Suea Pa, Dusit, Bangkok 10300, Thailand

RESUMO

This paper presents the experimental investigation and comparison of thermal performance of plate fin heat sinks combined with copper foam, flat plate heat sinks combined with copper foam, and plate fin heat sinks. The effect of air velocity, pore density of the copper foam, and heat flux on thermal resistance and pressure drop is investigated. The experiments are carried out at air velocity ranging between 1 m/s and 5 m/s and heat flux ranging between 9.48 kW/m2 and 12.59 kW/m2. Copper foams with similar porosity and different pore density of 30 PPI, 40 PPI, and 50 PPI are used. The experimental results showed that the thermal resistance of PFHSfoam and FPHSfoam is decreased by 13.57% and 10.89% when the pore density increases at a low mass flux (G ≤ 2.89 kg/m2 · s for PFHSfoam and G ≤ 3.88 kg/m2 · s for FPHSfoam). However, at a high mass flux (G > 2.89 kg/m2 · s for PFHSfoam and G > 3.88 kg/m2 · s for FPHSfoam), it is decreased by 7.97% and 4.39%. The thermal resistance of PFHS, PFHSfoam, and FPHSfoam changes slightly by the varying heat flux. The total pressure drop of PFHSfoam and FPHSfoam increases by about 1.72 times and 2.02 times on increase in the pore density between 30 PPI and 50 PPI. Under a similar pumping power, PFHSfoam gives the lowest thermal resistance, and thermal resistance of PFHSfoam and FPHSfoam is lower than that from PFHS by about 40.74% and 25.18%.

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