TY - JOUR
T1 - An experimental investigation of forced convective cooling performance of a microchannel heat sink with Al2O3/water nanofluid
AU - Ho, C. J.
AU - Wei, L. C.
AU - Li, Z. W.
N1 - Funding Information:
The authors greatly appreciate the support of the National Science Council of ROC in Taiwan for this study through Projects of NSC94-2212-E006-101, NSC95-2212-E006-233, and NSC96-2212-E006-173. The constructive comments from the reviewers are sincerely appreciated.
PY - 2010/2
Y1 - 2010/2
N2 - Experiments were conducted to investigate forced convective cooling performance of a copper microchannel heat sink with Al2O3/water nanofluid as the coolant. The microchannel heat sink fabricated consists of 25 parallel rectangular microchannels of length 50 mm with a cross-sectional area of 283 μm in width by 800 μm in height for each microchannel. Hydraulic and thermal performances of the nanofluid-cooled microchannel heat sink have been assessed from the results obtained for the friction factor, the pumping power, the averaged heat transfer coefficient, the thermal resistance, and the maximum wall temperature, with the Reynolds number ranging from 226 to 1676. Results show that the nanofluid-cooled heat sink outperforms the water-cooled one, having significantly higher average heat transfer coefficient and thereby markedly lower thermal resistance and wall temperature at high pumping power, in particular. Despite the marked increase in dynamic viscosity due to dispersing the alumina nanoparticles in water, the friction factor for the nanofluid-cooled heat sink was found slightly increased only.
AB - Experiments were conducted to investigate forced convective cooling performance of a copper microchannel heat sink with Al2O3/water nanofluid as the coolant. The microchannel heat sink fabricated consists of 25 parallel rectangular microchannels of length 50 mm with a cross-sectional area of 283 μm in width by 800 μm in height for each microchannel. Hydraulic and thermal performances of the nanofluid-cooled microchannel heat sink have been assessed from the results obtained for the friction factor, the pumping power, the averaged heat transfer coefficient, the thermal resistance, and the maximum wall temperature, with the Reynolds number ranging from 226 to 1676. Results show that the nanofluid-cooled heat sink outperforms the water-cooled one, having significantly higher average heat transfer coefficient and thereby markedly lower thermal resistance and wall temperature at high pumping power, in particular. Despite the marked increase in dynamic viscosity due to dispersing the alumina nanoparticles in water, the friction factor for the nanofluid-cooled heat sink was found slightly increased only.
UR - http://www.scopus.com/inward/record.url?scp=74249089215&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=74249089215&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2009.07.003
DO - 10.1016/j.applthermaleng.2009.07.003
M3 - Article
AN - SCOPUS:74249089215
SN - 1359-4311
VL - 30
SP - 96
EP - 103
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 2-3
ER -