Evaporation of liquid droplet in nano and micro scales from statistical rate theory
The statistical rate theory (SRT) is applied to predict the average evaporation flux of liquid droplet after the approach is validated in the sessile droplet experiments of the water and heavy water. The steady-state experiments show a temperature discontinuity at the evaporating interface. The aver...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/104724 http://hdl.handle.net/10220/24679 |
| _version_ | 1826113684737359872 |
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| author | Tao, Wei Duan, Fei He, Bin |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tao, Wei Duan, Fei He, Bin |
| author_sort | Tao, Wei |
| collection | NTU |
| description | The statistical rate theory (SRT) is applied to predict the average evaporation flux of liquid droplet after the approach is validated in the sessile droplet experiments of the water and heavy water. The steady-state experiments show a temperature discontinuity at the evaporating interface. The average evaporation flux is evaluated by individually changing the measurement at a liquid– vapor interface, including the interfacial liquid temperature, the interfacial vapor temperature, the vapor-phase pressure, and the droplet size. The parameter study shows that a higher temperature jump would reduce the average evaporation flux. The average evaporation flux can significantly be influenced by the interfacial liquid temperature and the vapor-phase pressure. The variation can switch the evaporation into condensation. The evaporation flux is found to remain relative constant if the droplet is larger than a micro scale, while the smaller diameters in nano scale can produce a much higher evaporation flux. In addition, a smaller diameter of droplets with the same liquid volume has a larger surface area. It is suggested that the evaporation rate increases dramatically as the droplet shrinks into nano size. |
| first_indexed | 2024-10-01T03:27:15Z |
| format | Journal Article |
| id | ntu-10356/104724 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:27:15Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1047242020-03-07T13:22:17Z Evaporation of liquid droplet in nano and micro scales from statistical rate theory Tao, Wei Duan, Fei He, Bin School of Mechanical and Aerospace Engineering DRNTU::Engineering::Nanotechnology The statistical rate theory (SRT) is applied to predict the average evaporation flux of liquid droplet after the approach is validated in the sessile droplet experiments of the water and heavy water. The steady-state experiments show a temperature discontinuity at the evaporating interface. The average evaporation flux is evaluated by individually changing the measurement at a liquid– vapor interface, including the interfacial liquid temperature, the interfacial vapor temperature, the vapor-phase pressure, and the droplet size. The parameter study shows that a higher temperature jump would reduce the average evaporation flux. The average evaporation flux can significantly be influenced by the interfacial liquid temperature and the vapor-phase pressure. The variation can switch the evaporation into condensation. The evaporation flux is found to remain relative constant if the droplet is larger than a micro scale, while the smaller diameters in nano scale can produce a much higher evaporation flux. In addition, a smaller diameter of droplets with the same liquid volume has a larger surface area. It is suggested that the evaporation rate increases dramatically as the droplet shrinks into nano size. 2015-01-20T03:36:16Z 2019-12-06T21:38:19Z 2015-01-20T03:36:16Z 2019-12-06T21:38:19Z 2015 2015 Journal Article Duan, F., He, B., & Tao, W. (2015). Evaporation of liquid droplet in nano and micro scales from statistical rate theory. Journal of nanoscience and nanotechnology, 15(4), 3011-3016. 1533-4880 https://hdl.handle.net/10356/104724 http://hdl.handle.net/10220/24679 10.1166/jnn.2015.9662 en Journal of nanoscience and nanotechnology © 2015 American Scientific Publishers. |
| spellingShingle | DRNTU::Engineering::Nanotechnology Tao, Wei Duan, Fei He, Bin Evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| title | Evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| title_full | Evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| title_fullStr | Evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| title_full_unstemmed | Evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| title_short | Evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| title_sort | evaporation of liquid droplet in nano and micro scales from statistical rate theory |
| topic | DRNTU::Engineering::Nanotechnology |
| url | https://hdl.handle.net/10356/104724 http://hdl.handle.net/10220/24679 |
| work_keys_str_mv | AT taowei evaporationofliquiddropletinnanoandmicroscalesfromstatisticalratetheory AT duanfei evaporationofliquiddropletinnanoandmicroscalesfromstatisticalratetheory AT hebin evaporationofliquiddropletinnanoandmicroscalesfromstatisticalratetheory |