Experimental study on quenching of a small metal sphere in nanofluids
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Kim, H. et al. “Experimental Study on Quenching of a Small Metal Sphere in Nanofluids.” ASME Conference Proceedings 2008.48715 (2008): 1839-1844. ©2008 ASME
Date issued
2008-11Department
Massachusetts Institute of Technology. Department of Nuclear Science and EngineeringJournal
ASME 2008 International Mechanical Engineering Congress and Exposition (IMECE2008) Proceedings
Publisher
ASME
Citation
The objective of this research is to systematically investigate the quenching characteristics of a hot sphere in nanofluids. The experiments are carried out with a small (9.5 mm) stainless steel sphere with initial temperatures near 1000 °C. Alumina nanofluids and deionized water are tested at low volume concentrations (less than 0.1% by volume) and saturated conditions (100 °C). The results show that the quenching behavior in nanofluids is nearly identical to that in pure water. Moreover it is found that some nanoparticles accumulate on the sphere surface during the quenching process. Such accumulation of nanoparticles on the surface promotes the destabilization of the vapor film in subsequent quenching experiments, thus accelerating the return to nucleate boiling at higher temperature than that in the clean surface case.
Version: Final published version
ISBN
978-0-7918-4871-5