Warming-up and evaporation characteristics of homogeneous and heterogeneous water droplets; International Journal of Heat and Mass Transfer; Vol. 138
| Parent link: | International Journal of Heat and Mass Transfer Vol. 138.— 2019.— [P. 1061-1074] |
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| Συλλογικό Έργο: | , |
| Άλλοι συγγραφείς: | , , , , |
| Περίληψη: | Title screen The study reports the experimental results of warming-up and evaporation of homogeneous and heterogeneous water droplets at high temperatures, 100–600?°C. The heterogeneous water droplet is formed by covering a solid opaque graphite particle by a thin water layer. Differences between the warming-up mechanisms of the homogeneous and heterogeneous water droplets with an initial liquid volume from 10??l to 20??l at the convective heating are shown. The contactless method Planar Laser-Induced Fluorescence allows the analysis of the temperature distributions inside the homogeneous droplets and inside a liquid phase of the heterogeneous droplets, laying emphasis on the novelty of the research. A maximum temperature in the central part of the liquid phase of the heterogeneous droplets is approx. 90?°C; a maximum temperature in the homogeneous droplets is approx. 50?°C. The heterogeneous droplet heats up by 20?±?3% longer than the homogeneous one. Moreover, a warming-up rate of the liquid phase of the heterogeneous droplet is less than that of the homogeneous water droplet by 85%. However, the size decreasing rate of the heterogeneous droplets is sometimes higher than that of the homogeneous droplets by 80%. The mean and instant evaporation rate of homogeneous and heterogeneous water droplets are compared. The study discusses an influence of convection in the liquid phase of the heterogeneous droplets on evaporation characteristics. The time of the complete water evaporation decreases by 40% due to a solid inclusion presence. A dimensionless criterion of the convective heat transfer enhancement in a water droplet containing the solid opaque inclusion is used to generalize the experimental data. The findings obtained are critically important to improve the existing high-temperature technologies and methods of water purification and to develop innovative ones. Режим доступа: по договору с организацией-держателем ресурса |
| Γλώσσα: | Αγγλικά |
| Έκδοση: |
2019
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| Θέματα: | |
| Διαθέσιμο Online: | https://doi.org/10.1016/j.ijheatmasstransfer.2019.04.131 |
| Μορφή: | Ηλεκτρονική πηγή Κεφάλαιο βιβλίου |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664306 |
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| 200 | 1 | |a Warming-up and evaporation characteristics of homogeneous and heterogeneous water droplets |f D. V. Antonov, G. V. Kuznetsov, M. V. Piskunov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 49 tit.] | ||
| 330 | |a The study reports the experimental results of warming-up and evaporation of homogeneous and heterogeneous water droplets at high temperatures, 100–600?°C. The heterogeneous water droplet is formed by covering a solid opaque graphite particle by a thin water layer. Differences between the warming-up mechanisms of the homogeneous and heterogeneous water droplets with an initial liquid volume from 10??l to 20??l at the convective heating are shown. The contactless method Planar Laser-Induced Fluorescence allows the analysis of the temperature distributions inside the homogeneous droplets and inside a liquid phase of the heterogeneous droplets, laying emphasis on the novelty of the research. A maximum temperature in the central part of the liquid phase of the heterogeneous droplets is approx. 90?°C; a maximum temperature in the homogeneous droplets is approx. 50?°C. The heterogeneous droplet heats up by 20?±?3% longer than the homogeneous one. Moreover, a warming-up rate of the liquid phase of the heterogeneous droplet is less than that of the homogeneous water droplet by 85%. However, the size decreasing rate of the heterogeneous droplets is sometimes higher than that of the homogeneous droplets by 80%. The mean and instant evaporation rate of homogeneous and heterogeneous water droplets are compared. The study discusses an influence of convection in the liquid phase of the heterogeneous droplets on evaporation characteristics. The time of the complete water evaporation decreases by 40% due to a solid inclusion presence. A dimensionless criterion of the convective heat transfer enhancement in a water droplet containing the solid opaque inclusion is used to generalize the experimental data. The findings obtained are critically important to improve the existing high-temperature technologies and methods of water purification and to develop innovative ones. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t International Journal of Heat and Mass Transfer | ||
| 463 | |t Vol. 138 |v [P. 1061-1074] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a water droplet | |
| 610 | 1 | |a heterogeneous droplet | |
| 610 | 1 | |a solid inclusion | |
| 610 | 1 | |a convective heat transfer | |
| 610 | 1 | |a high-temperature heating | |
| 610 | 1 | |a planar laser induced fluorescence | |
| 610 | 1 | |a капля | |
| 610 | 1 | |a нагрев | |
| 610 | 1 | |a твердые включения | |
| 610 | 1 | |a теплопередача | |
| 701 | 1 | |a Antonov |b D. V. |g Dmitry Vladimirovich | |
| 701 | 1 | |a Kuznetsov |b G. V. |c Specialist in the field of heat power energy |c Professor of Tomsk Polytechnic University, Doctor of Physical and Mathematical Sciences |f 1949- |g Geny Vladimirovich |3 (RuTPU)RU\TPU\pers\31891 |9 15963 | |
| 701 | 1 | |a Piskunov |b M. V. |c specialist in the field of thermal engineering |c engineer of Tomsk Polytechnic University |f 1991- |g Maksim Vladimirovich |3 (RuTPU)RU\TPU\pers\34151 |9 17691 | |
| 701 | 1 | |a Vysokomornaya |b O. V. |c physicist |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1984- |g Olga Valeryevna |3 (RuTPU)RU\TPU\pers\33928 |9 17501 | |
| 701 | 0 | |a Yan Wei Mon | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа энергетики |b Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова) |3 (RuTPU)RU\TPU\col\23504 |
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