Infrared thermometry study of nanofluid pool boiling phenomena
Abstract Infrared thermometry was used to obtain first-of-a-kind, time- and space-resolved data for pool boiling phenomena in water-based nanofluids with diamond and silica nanoparticles at low concentration (<0.1 vol.%). In addition to macroscopic parameters like the average heat transfer coeffi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Springer
2011
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| Online Access: | http://hdl.handle.net/1721.1/62824 |
| _version_ | 1811069885622517760 |
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| author | Gerardi, Craig Buongiorno, Jacopo Hu, Lin-wen McKrell, Thomas J. |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Gerardi, Craig Buongiorno, Jacopo Hu, Lin-wen McKrell, Thomas J. |
| author_sort | Gerardi, Craig |
| collection | MIT |
| description | Abstract Infrared thermometry was used to obtain first-of-a-kind, time- and space-resolved data for pool boiling phenomena in water-based nanofluids with diamond and silica nanoparticles at low concentration (<0.1 vol.%). In addition to macroscopic parameters like the average heat transfer coefficient and critical heat flux [CHF] value, more fundamental parameters such as the bubble departure diameter and frequency, growth and wait times, and nucleation site density [NSD] were directly measured for a thin, resistively heated, indium-tin-oxide surface deposited onto a sapphire substrate. Consistent with other nanofluid studies, the nanoparticles caused deterioration in the nucleate boiling heat transfer (by as much as 50%) and an increase in the CHF (by as much as 100%). The bubble departure frequency and NSD were found to be lower in nanofluids compared with water for the same wall superheat. Furthermore, it was found that a porous layer of nanoparticles built up on the heater surface during nucleate boiling, which improved surface wettability compared with the water-boiled surfaces. Using the prevalent nucleate boiling models, it was possible to correlate this improved surface wettability to the experimentally observed reductions in the bubble departure frequency, NSD, and ultimately to the deterioration in the nucleate boiling heat transfer and the CHF enhancement. |
| first_indexed | 2024-09-23T08:18:31Z |
| format | Article |
| id | mit-1721.1/62824 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:18:31Z |
| publishDate | 2011 |
| publisher | Springer |
| record_format | dspace |
| spelling | mit-1721.1/628242022-09-23T12:10:44Z Infrared thermometry study of nanofluid pool boiling phenomena Gerardi, Craig Buongiorno, Jacopo Hu, Lin-wen McKrell, Thomas J. Massachusetts Institute of Technology. Department of Nuclear Science and Engineering MIT Nuclear Reactor Laboratory Buongiorno, Jacopo Hu, Lin-Wen McKrell, Thomas J. Abstract Infrared thermometry was used to obtain first-of-a-kind, time- and space-resolved data for pool boiling phenomena in water-based nanofluids with diamond and silica nanoparticles at low concentration (<0.1 vol.%). In addition to macroscopic parameters like the average heat transfer coefficient and critical heat flux [CHF] value, more fundamental parameters such as the bubble departure diameter and frequency, growth and wait times, and nucleation site density [NSD] were directly measured for a thin, resistively heated, indium-tin-oxide surface deposited onto a sapphire substrate. Consistent with other nanofluid studies, the nanoparticles caused deterioration in the nucleate boiling heat transfer (by as much as 50%) and an increase in the CHF (by as much as 100%). The bubble departure frequency and NSD were found to be lower in nanofluids compared with water for the same wall superheat. Furthermore, it was found that a porous layer of nanoparticles built up on the heater surface during nucleate boiling, which improved surface wettability compared with the water-boiled surfaces. Using the prevalent nucleate boiling models, it was possible to correlate this improved surface wettability to the experimentally observed reductions in the bubble departure frequency, NSD, and ultimately to the deterioration in the nucleate boiling heat transfer and the CHF enhancement. 2011-05-16T14:21:55Z 2011-05-16T14:21:55Z 2011-03 2010-09 2011-05-09T18:31:05Z Article http://purl.org/eprint/type/JournalArticle 1556-276X http://hdl.handle.net/1721.1/62824 Nanoscale Research Letters. 2011 Mar 16;6(1):232 en http://dx.doi.org/10.1186/1556-276X-6-232 Nanoscale Research Letters http://creativecommons.org/licenses/by/2.0 Gerardi et al.; licensee BioMed Central Ltd. application/pdf Springer |
| spellingShingle | Gerardi, Craig Buongiorno, Jacopo Hu, Lin-wen McKrell, Thomas J. Infrared thermometry study of nanofluid pool boiling phenomena |
| title | Infrared thermometry study of nanofluid pool boiling phenomena |
| title_full | Infrared thermometry study of nanofluid pool boiling phenomena |
| title_fullStr | Infrared thermometry study of nanofluid pool boiling phenomena |
| title_full_unstemmed | Infrared thermometry study of nanofluid pool boiling phenomena |
| title_short | Infrared thermometry study of nanofluid pool boiling phenomena |
| title_sort | infrared thermometry study of nanofluid pool boiling phenomena |
| url | http://hdl.handle.net/1721.1/62824 |
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