Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 87, Issue -, Pages 848-858Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2014.07.079
Keywords
Nanofluid; Mini-channel; Heat sink; Heat source; Natural circulation loop
Categories
Funding
- National Science Council of ROC [NSC100-2221-E006-190]
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In this study, the heat transfer characteristics of Al2O3-water nanofluid were investigated experimentally in a rectangular natural circulation loop of 402 mm in height and 205 mm in width. The 120-mm-long heated section and 155-mm-long cooling section in the loop were constructed with mini-channel heat exchangers. The nanometer-sized particles of alumina (Al2O3) were dispersed in pure water (the base fluid) to form the alumina-water nanofluid with mass fractions in the range of 0.1-1 wt.%. The results clearly indicate that Al2O3-water nanofluid can markedly enhance the heat-transfer performance of the natural circulation loop considered. The average heat-transfer effectiveness at the heating and cooling sections were approximately 3.5-22% and 9.5-62% respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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