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Contrasting the Effect of Electric Current Between Vertical and Horizontal High-Pressure Mercury Discharge Lamps

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2 Author(s)
Ben Hamida, M.B. ; Unite d'Etude des Milieux Ionises et Reactifs, Inst. Preparatoire aux Etudes d'Ing. de Monastir (IPEIM), Monastir, Tunisia ; Charrada, K.

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.

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Plasma Science, IEEE Transactions on  (Volume:41 ,  Issue: 7 )