TY - GEN
T1 - Preparation and characterization of water-based nanofluids for nuclear applications
AU - Williams, W. C.
AU - Forrest, E.
AU - Hu, L. W.
AU - Buongiorno, J.
PY - 2006
Y1 - 2006
N2 - As part of an effort to evaluate water-based nanofluids for nuclear applications, preparation and characterization has been performed for nanofluids being considered for MIT's nanofluid heat transfer experiments. Three methods of generating these nanofluids are available: creating them from chemical precipitation, purchasing the nanoparticles in powder form and mixing them with the base fluid, and direct purchase of prepared nanofluids. Characterization of nanofluids includes colloidal stability, size distribution, concentration, and elemental composition. Quality control of the nanofluids to be used for heat transfer testing is crucial; an exact knowledge of the fluid constituents is essential to uncovering mechanisms responsible for heat transport enhancement. Testing indicates that nanofluids created by mixing a liquid with nanoparticles in powder form are often not stable, although some degree of stabilization is obtainable with pH control and/or surfactant addition. Some commercially available prepared nanofluids have been found to contain unacceptable levels of impurities and/or include a different weight percent of nanoparticles compared to vendor specifications. Tools utilized to characterize and qualify nanofluids for this study include neutron activation analysis (NAA), inductively-coupled plasma spectroscopy (ICP), transmission electron microscopy (TEM) imaging, thermogravimetric analysis (TGA) and dynamic light scattering (DLS). Preparation procedures and characterization results for selected nanofluids will be discussed in detail.
AB - As part of an effort to evaluate water-based nanofluids for nuclear applications, preparation and characterization has been performed for nanofluids being considered for MIT's nanofluid heat transfer experiments. Three methods of generating these nanofluids are available: creating them from chemical precipitation, purchasing the nanoparticles in powder form and mixing them with the base fluid, and direct purchase of prepared nanofluids. Characterization of nanofluids includes colloidal stability, size distribution, concentration, and elemental composition. Quality control of the nanofluids to be used for heat transfer testing is crucial; an exact knowledge of the fluid constituents is essential to uncovering mechanisms responsible for heat transport enhancement. Testing indicates that nanofluids created by mixing a liquid with nanoparticles in powder form are often not stable, although some degree of stabilization is obtainable with pH control and/or surfactant addition. Some commercially available prepared nanofluids have been found to contain unacceptable levels of impurities and/or include a different weight percent of nanoparticles compared to vendor specifications. Tools utilized to characterize and qualify nanofluids for this study include neutron activation analysis (NAA), inductively-coupled plasma spectroscopy (ICP), transmission electron microscopy (TEM) imaging, thermogravimetric analysis (TGA) and dynamic light scattering (DLS). Preparation procedures and characterization results for selected nanofluids will be discussed in detail.
UR - http://www.scopus.com/inward/record.url?scp=33845780656&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33845780656
SN - 0894486985
SN - 9780894486982
T3 - Proceedings of the 2006 International Congress on Advances in Nuclear Power Plants, ICAPP'06
SP - 1566
EP - 1572
BT - Proceedings of the 2006 International Congress on Advances in Nuclear Power Plants, ICAPP'06
T2 - American Nuclear Society Embedded Topical Meeting - 2006 International Congress on Advances in Nuclear Power Plants, ICAPP'06
Y2 - 4 June 2006 through 8 June 2006
ER -