TY - GEN
T1 - Convective heat transfer for water-based alumina nanofluids in a single 1.02-mm tube
AU - Lai, W. Y.
AU - Phelan, Patrick
AU - Vinod, S.
AU - Prasher, Ravi
PY - 2008
Y1 - 2008
N2 - Nanofluids are colloidal solutions which contain a small volume fraction of suspended submicron particles or fibers in heat transfer liquids, such as water or glycol mixtures. Compared with the base fluid, numerous experiments have generally indicated an increase in effective thermal conductivity and a strong temperature dependence of the static effective thermal conductivity. However, in practical applications, a heat conduction mechanism may not be sufficient for cooling high-heat-dissipation devices such as microelectronics or powerful optical equipment. Thus, the thermal performance under convective heat transfer conditions becomes our main task. We report here the heat transfer coefficient in both developing and fully-developed regions by using water-based alumina nanofluids. Our experimental test section consists of a single 1.02-mm-diameter stainless steel tube, which is electrically heated to provide a constant wall heat flux. Both pressure drop and temperature differences are measured. The characterization of nanofluids such as pH, electrical conductivity, particle sizing and zeta potential are also documented. Based on these results, the analysis and applicability of convective heat sinks containing nanofluids are evaluated for contemporary uses.
AB - Nanofluids are colloidal solutions which contain a small volume fraction of suspended submicron particles or fibers in heat transfer liquids, such as water or glycol mixtures. Compared with the base fluid, numerous experiments have generally indicated an increase in effective thermal conductivity and a strong temperature dependence of the static effective thermal conductivity. However, in practical applications, a heat conduction mechanism may not be sufficient for cooling high-heat-dissipation devices such as microelectronics or powerful optical equipment. Thus, the thermal performance under convective heat transfer conditions becomes our main task. We report here the heat transfer coefficient in both developing and fully-developed regions by using water-based alumina nanofluids. Our experimental test section consists of a single 1.02-mm-diameter stainless steel tube, which is electrically heated to provide a constant wall heat flux. Both pressure drop and temperature differences are measured. The characterization of nanofluids such as pH, electrical conductivity, particle sizing and zeta potential are also documented. Based on these results, the analysis and applicability of convective heat sinks containing nanofluids are evaluated for contemporary uses.
KW - Forced convection
KW - Laminar flow
KW - Nanofluid
KW - Nanofluid characterization
UR - http://www.scopus.com/inward/record.url?scp=50949098586&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50949098586&partnerID=8YFLogxK
U2 - 10.1109/ITHERM.2008.4544372
DO - 10.1109/ITHERM.2008.4544372
M3 - Conference contribution
AN - SCOPUS:50949098586
SN - 9781424417018
T3 - 2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM
SP - 970
EP - 978
BT - 2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM
T2 - 2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, I-THERM
Y2 - 28 May 2008 through 31 May 2008
ER -