Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry
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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2012-01-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1155/2012/181079 |
| _version_ | 1819113414460440576 |
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| author | Harry O'Hanley Jacopo Buongiorno Thomas McKrell Lin-wen Hu |
| author_facet | Harry O'Hanley Jacopo Buongiorno Thomas McKrell Lin-wen Hu |
| author_sort | Harry O'Hanley |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-22T04:29:01Z |
| format | Article |
| id | doaj.art-23c099f07eca4aae9eeca8b640a1f8e1 |
| institution | Directory Open Access Journal |
| issn | 1687-8132 |
| language | English |
| last_indexed | 2024-12-22T04:29:01Z |
| publishDate | 2012-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-23c099f07eca4aae9eeca8b640a1f8e12022-12-21T18:39:04ZengSAGE PublishingAdvances in Mechanical Engineering1687-81322012-01-01410.1155/2012/18107910.1155_2012/181079Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning CalorimetryHarry O'HanleyJacopo BuongiornoThomas McKrellLin-wen HuNanofluids 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.https://doi.org/10.1155/2012/181079 |
| spellingShingle | Harry O'Hanley Jacopo Buongiorno Thomas McKrell Lin-wen Hu Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry Advances in Mechanical Engineering |
| title | Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry |
| title_full | Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry |
| title_fullStr | Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry |
| title_full_unstemmed | Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry |
| title_short | Measurement and Model Validation of Nanofluid Specific Heat Capacity with Differential Scanning Calorimetry |
| title_sort | measurement and model validation of nanofluid specific heat capacity with differential scanning calorimetry |
| url | https://doi.org/10.1155/2012/181079 |
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