CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs
The transient boiling heat transfer characteristics in a pool of water and highly wetting liquids such as ethanol and FC-72 due to an exponentially increasing heat input of various rates were investigated using the 1.0 mm diameter experimental heater shaped in a horizontal cylinder for wide ranges o...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2012/248923 |
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| author | Jongdoc Park Katsuya Fukuda Qiusheng Liu |
| author_facet | Jongdoc Park Katsuya Fukuda Qiusheng Liu |
| author_sort | Jongdoc Park |
| collection | DOAJ |
| description | The transient boiling heat transfer characteristics in a pool of water and highly wetting liquids such as ethanol and FC-72 due to an exponentially increasing heat input of various rates were investigated using the 1.0 mm diameter experimental heater shaped in a horizontal cylinder for wide ranges of pressure and subcooling. The trend of critical heat flux (CHF) values in relation to the periods was divided into three groups. The CHF belonging to the 1st group with a longer period occurs with a fully developed nucleate boiling (FDNB) heat transfer process. For the 2nd group with shorter periods, the direct transition to film boiling from non boiling occurs as an explosive boiling. The direct boiling transition at the CHF from non-boiling regime to film boiling occurred without a heat flux increase. It was confirmed that the initial boiling behavior is significantly affected by the property and the wettability of the liquid. The photographic observations on the vapor bubble behavior during transitions to film boiling were performed using a high-speed video camera system. |
| format | Article |
| id | doaj-art-8d85702d7d4e4499a43796c7970125e5 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-8d85702d7d4e4499a43796c7970125e52025-02-03T01:10:45ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832012-01-01201210.1155/2012/248923248923CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat InputsJongdoc Park0Katsuya Fukuda1Qiusheng Liu2Oshima National College of Maritime Technology, 1091-1 Komatsu, Suo-Oshima-cho, Oshima-gun, Yamaguchi 742-2106, JapanGraduate School of Maritime Sciences, Kobe University, 5-1-1 Fukueminami, Higashinada, Kobe 658-0022, JapanGraduate School of Maritime Sciences, Kobe University, 5-1-1 Fukueminami, Higashinada, Kobe 658-0022, JapanThe transient boiling heat transfer characteristics in a pool of water and highly wetting liquids such as ethanol and FC-72 due to an exponentially increasing heat input of various rates were investigated using the 1.0 mm diameter experimental heater shaped in a horizontal cylinder for wide ranges of pressure and subcooling. The trend of critical heat flux (CHF) values in relation to the periods was divided into three groups. The CHF belonging to the 1st group with a longer period occurs with a fully developed nucleate boiling (FDNB) heat transfer process. For the 2nd group with shorter periods, the direct transition to film boiling from non boiling occurs as an explosive boiling. The direct boiling transition at the CHF from non-boiling regime to film boiling occurred without a heat flux increase. It was confirmed that the initial boiling behavior is significantly affected by the property and the wettability of the liquid. The photographic observations on the vapor bubble behavior during transitions to film boiling were performed using a high-speed video camera system.http://dx.doi.org/10.1155/2012/248923 |
| spellingShingle | Jongdoc Park Katsuya Fukuda Qiusheng Liu CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs Science and Technology of Nuclear Installations |
| title | CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs |
| title_full | CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs |
| title_fullStr | CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs |
| title_full_unstemmed | CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs |
| title_short | CHF Phenomena by Photographic Study of Boiling Behavior due to Transient Heat Inputs |
| title_sort | chf phenomena by photographic study of boiling behavior due to transient heat inputs |
| url | http://dx.doi.org/10.1155/2012/248923 |
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