Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry
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O'Hanley-2012-Measurement and mode.pdf
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Author(s)
Buongiorno, Jacopo
McKrell, Thomas J.
Hu, Lin-Wen
O'Hanley, Harrison F
Date Issued
October 2011
Journal
Advances in Mechanical Engineering
Publisher
Hindawi Pub. Corp.
Citation
O’Hanley, Harry et al. “Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry.” Advances in Mechanical Engineering 2012 (2012): 1–6. Web.
Version
Final published version
Abstract
Nanofluids are being considered for heat transfer applications; therefore it is important to know their thermophysical properties accurately. In this paper we focused on nanofluid specific heat capacity. Currently, there exist two models to predict a nanofluid specific heat capacity as a function of nanoparticle concentration and material. Model I is a straight volume-weighted average; Model II is based on the assumption of thermal equilibrium between the particles and the surrounding fluid. These two models give significantly different predictions for a given system. Using differential scanning calorimetry (DSC), a robust experimental methodology for measuring the heat capacity of fluids, the specific heat capacities of water-based silica, alumina, and copper oxide nanofluids were measured. Nanoparticle concentrations were varied between 5 wt% and 50 wt%. Test results were found to be in excellent agreement with Model II, while the predictions of Model I deviated very significantly from the data. Therefore, Model II is recommended for nanofluids.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
MIT Nuclear Reactor Laboratory
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1155/2012/181079
