Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography
The wetted area fraction in subcooled pool boiling of water at atmospheric pressure is measured using the DEPIcT (DEtection of Phase by Infrared Thermography) technique. DEPIcT exploits the contrast in infrared (IR) light emissions between wet and dry areas on the surface of an IR-transparent heater...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier
2017
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| Online Access: | http://hdl.handle.net/1721.1/108036 |
| _version_ | 1826202591540805632 |
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| author | Park, Youngjae Buongiorno, Jacopo Kim, Hyungdae |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Park, Youngjae Buongiorno, Jacopo Kim, Hyungdae |
| author_sort | Park, Youngjae |
| collection | MIT |
| description | The wetted area fraction in subcooled pool boiling of water at atmospheric pressure is measured using the DEPIcT (DEtection of Phase by Infrared Thermography) technique. DEPIcT exploits the contrast in infrared (IR) light emissions between wet and dry areas on the surface of an IR-transparent heater to visualize the instantaneous distribution of the liquid and gas phases in contact with the heater surface. In this paper time-averaged wetted area fraction data in nucleate boiling are reported as functions of heat flux (from 30% up to 100% of the Critical Heat Flux) and subcooling (ΔTsub = 0, 5, 10, 30 and 50 °C). The results show that the wetted area fraction monotonically decreases with increasing heat flux and increases with increasing subcooling: both trends are expected. The range of time-averaged wetted area fractions is from 90%, at low heat flux and high subcooling, to 50% at high heat flux (right before CHF) and low subcooling. It is also shown that the dry areas are periodically rewetted by liquid sloshing on the surface at any subcooling and heat flux; however, the dry areas expand irreversibly at CHF. |
| first_indexed | 2024-09-23T12:10:05Z |
| format | Article |
| id | mit-1721.1/108036 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:10:05Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1080362023-02-26T03:21:55Z Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography Park, Youngjae Buongiorno, Jacopo Kim, Hyungdae Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Buongiorno, Jacopo Kim, Hyung Dae Buongiorno, Jacopo The wetted area fraction in subcooled pool boiling of water at atmospheric pressure is measured using the DEPIcT (DEtection of Phase by Infrared Thermography) technique. DEPIcT exploits the contrast in infrared (IR) light emissions between wet and dry areas on the surface of an IR-transparent heater to visualize the instantaneous distribution of the liquid and gas phases in contact with the heater surface. In this paper time-averaged wetted area fraction data in nucleate boiling are reported as functions of heat flux (from 30% up to 100% of the Critical Heat Flux) and subcooling (ΔTsub = 0, 5, 10, 30 and 50 °C). The results show that the wetted area fraction monotonically decreases with increasing heat flux and increases with increasing subcooling: both trends are expected. The range of time-averaged wetted area fractions is from 90%, at low heat flux and high subcooling, to 50% at high heat flux (right before CHF) and low subcooling. It is also shown that the dry areas are periodically rewetted by liquid sloshing on the surface at any subcooling and heat flux; however, the dry areas expand irreversibly at CHF. MIT Energy Initiative 2017-04-11T13:22:28Z 2017-04-11T13:22:28Z 2013-07 Article http://purl.org/eprint/type/JournalArticle 0029-5493 http://hdl.handle.net/1721.1/108036 Kim, Hyungdae, Park, Youngjae, and Buongiorno, Jacopo."Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography" Nuclear Engineering and Design 264 (November 2013): 103-110 © 2013 Elsevier B.V. en_US http://dx.doi.org/10.1016/j.nucengdes.2013.07.002 Nuclear Engineering and Design Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Buongiorno |
| spellingShingle | Park, Youngjae Buongiorno, Jacopo Kim, Hyungdae Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| title | Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| title_full | Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| title_fullStr | Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| title_full_unstemmed | Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| title_short | Measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| title_sort | measurement of wetted area fraction in subcooled pool boiling of water using infrared thermography |
| url | http://hdl.handle.net/1721.1/108036 |
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