Title :
Contrasting the Effect of Electric Current Between Vertical and Horizontal High-Pressure Mercury Discharge Lamps
Author :
Ben Hamida, Mohamed Bechir ; Charrada, Kamel
Author_Institution :
Unite d´Etude des Milieux Ionises et Reactifs, Inst. Preparatoire aux Etudes d´Ing. de Monastir (IPEIM), Monastir, Tunisia
Abstract :
This paper discusses the thermal behavior of a high-pressure mercury lamp in a horizontal position compared to that of a vertical lamp when the supply current varies. The model adopted is 3-D, steady, and dc powered. After the validation of the model, pressure of the lamp is kept at 6 × 105 Pa and the supply current varied from 1 to 10 A. Then, by comparing the case of the lamp in a horizontal position with that in a vertical one, the temperature fields, the flow of heat conduction, the flow of convective heat, and the accumulation of mercury behind the electrodes are analyzed.
Keywords :
arcs (electric); convection; discharge lamps; electrodes; heat conduction; mercury (metal); plasma pressure; plasma temperature; plasma transport processes; 3-D model; Hg; arcs; convective heat; current 1 A to 10 A; dc powered model; electric current; electrodes; heat conduction; horizontal high-pressure mercury discharge lamps; mercury accumulation; pressure 600000 Pa; steady model; thermal behavior; vertical high-pressure mercury discharge lamps; Discharges (electric); Electrodes; Heating; Mathematical model; Plasma temperature; Solid modeling; Convection; electric current; energy transfer; heat conduction; high pressure; mercury discharge lamps; vertical and horizontal positions;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2013.2263199
