The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems
An experimental study on electro-spraying from small-scale combustors is carried out using liquid ethanol as fuel. Two systems of electro-spraying are employed in the present study; one is a nozzle system (without a ring electrode) and the other is a nozzle-ring system (with a ring electrode). The p...
| Main Authors: | , , , , , |
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/43277/ |
| _version_ | 1848796652407619584 |
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| author | Gan, Yunhua Zhang, Xia Li, Haige Tong, Yang Shi, Yanling Yan, Yuying |
| author_facet | Gan, Yunhua Zhang, Xia Li, Haige Tong, Yang Shi, Yanling Yan, Yuying |
| author_sort | Gan, Yunhua |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | An experimental study on electro-spraying from small-scale combustors is carried out using liquid ethanol as fuel. Two systems of electro-spraying are employed in the present study; one is a nozzle system (without a ring electrode) and the other is a nozzle-ring system (with a ring electrode). The photos of electro-spraying at the cone-jet mode are taken by a digital camera. The voltage drop across the resistance in the loop is measured by a data acquisition instrument, and the atomization current is calculated according to Ohm's Law. The size and velocity of electro-spraying droplets are measured by a Phase Doppler Anemometer. A non-dimensional analysis on atomization current is completed to explain the electro-spraying phenomena of liquid at the stable cone-jet mode. The results show that, the lower atomization current and droplet velocity corresponds to smaller size of droplet. Based on the results of non-dimensional analysis, it is found that the dimensionless atomization current in both the nozzle system and nozzle-ring system obeys the scaling law as square root of the dimensionless flow rate. The charge density is of a −1.5 power dependence on droplet diameter. Both of the nozzle and the nozzle-ring systems show a good agreement with Rayleigh instability. |
| first_indexed | 2025-11-14T19:51:23Z |
| format | Article |
| id | nottingham-43277 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:51:23Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-432772020-05-04T19:56:57Z https://eprints.nottingham.ac.uk/43277/ The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems Gan, Yunhua Zhang, Xia Li, Haige Tong, Yang Shi, Yanling Yan, Yuying An experimental study on electro-spraying from small-scale combustors is carried out using liquid ethanol as fuel. Two systems of electro-spraying are employed in the present study; one is a nozzle system (without a ring electrode) and the other is a nozzle-ring system (with a ring electrode). The photos of electro-spraying at the cone-jet mode are taken by a digital camera. The voltage drop across the resistance in the loop is measured by a data acquisition instrument, and the atomization current is calculated according to Ohm's Law. The size and velocity of electro-spraying droplets are measured by a Phase Doppler Anemometer. A non-dimensional analysis on atomization current is completed to explain the electro-spraying phenomena of liquid at the stable cone-jet mode. The results show that, the lower atomization current and droplet velocity corresponds to smaller size of droplet. Based on the results of non-dimensional analysis, it is found that the dimensionless atomization current in both the nozzle system and nozzle-ring system obeys the scaling law as square root of the dimensionless flow rate. The charge density is of a −1.5 power dependence on droplet diameter. Both of the nozzle and the nozzle-ring systems show a good agreement with Rayleigh instability. Elsevier 2017-06 Article PeerReviewed Gan, Yunhua, Zhang, Xia, Li, Haige, Tong, Yang, Shi, Yanling and Yan, Yuying (2017) The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems. Journal of Electrostatics, 87 . pp. 228-235. ISSN 0304-3886 Cone-jet mode; Electro-spraying; Atomization current; Droplet size; Droplet velocity; Non-dimensional analysis http://www.sciencedirect.com/science/article/pii/S0304388617300104 doi:10.1016/j.elstat.2017.05.003 doi:10.1016/j.elstat.2017.05.003 |
| spellingShingle | Cone-jet mode; Electro-spraying; Atomization current; Droplet size; Droplet velocity; Non-dimensional analysis Gan, Yunhua Zhang, Xia Li, Haige Tong, Yang Shi, Yanling Yan, Yuying The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| title | The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| title_full | The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| title_fullStr | The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| title_full_unstemmed | The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| title_short | The atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| title_sort | atomization current and droplet size of ethanol in two different small-scale electro-spraying systems |
| topic | Cone-jet mode; Electro-spraying; Atomization current; Droplet size; Droplet velocity; Non-dimensional analysis |
| url | https://eprints.nottingham.ac.uk/43277/ https://eprints.nottingham.ac.uk/43277/ https://eprints.nottingham.ac.uk/43277/ |