| Автор | Ramasamy, R. |
| Автор | Selvarajan, V. |
| Дата выпуска | 1999 |
| dc.description | Anode for a non-transferred DC plasma spray torch was designed to improve electrothermal efficiency. A theoretical calculation was made for the electrothermal efficiency in a DC plasma torch operating with argon at atmospheric pressure with power level in the range of 5.2–20 kW using energy balance equations. ANOVA for the two level factorial design was done. Plasma gas flow rate, current intensity, nozzle diameter and length were found to influence the efficiency. The efficiency was found to decrease with increase in current intensity and nozzle length and to increase with increase in nozzle diameter and gas flow rate. The overall energy balance calculations showed that the heat transfer to the plasma-forming gas decreases with increase in arc current and the same was more significant at higher flow rates. Plasma jet velocity for different flow rates, input to the torch and nozzle dimensions was calculated from the gas enthalpy. It was found that the velocity increased with increase in the power input to the torch and gas flow rate and decreased with increase in nozzle length and diameter. The current–voltage characteristics of the torch operating with argon gas were studied for different gas flow rates. The Nottingham coefficients were calculated using least – square method. |
| Формат | application.pdf |
| Издатель | EDP Sciences |
| Копирайт | © EDP Sciences, 1999 |
| Название | Characterization of a spray torch and analysis of process parameters |
| Тип | research-article |
| DOI | 10.1051/epjap:1999202 |
| Electronic ISSN | 1286-0050 |
| Print ISSN | 1286-0042 |
| Журнал | The European Physical Journal Applied Physics |
| Том | 7 |
| Первая страница | 87 |
| Последняя страница | 96 |
| Аффилиация | Ramasamy R.; Department of Physics, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India |
| Аффилиация | Selvarajan V.; Department of Physics, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India |
| Выпуск | 1 |
