Modeling the warm-up phase of a high-pressure-lamps lighting network

Stambouli, Moncef; Charrada, K.; Costache, C.; Damelincourt, J. J.

doi:10.1109/27.774667

Cited by 17 publications

(15 citation statements)

References 4 publications

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“…Stambouli et al [6,7], Rossat-Mignod et al [9] and Zissis et al [10] described the discharge lamp conductance by a deferential equation of the first-order based on the simplified physical laws of plasma discharge. The proposed empirical formula is:…”

Section: Description Of the Conductance Model Used For The Discharge mentioning

confidence: 99%

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HID lamps fed by a non conventional pulsed current

Nsibi¹,

Chammam²,

Nehdi³

et al. 2015

Optik

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Section: Description Of the Conductance Model Used For The Discharge mentioning

confidence: 99%

“…Following Stambouli [6], this expression can be approximated by the formula: where C1 is a constant function of the plasma and atomic characteristics given by the formula:…”

Section: Description Of the Conductance Model Used For The Discharge mentioning

confidence: 99%

HID lamps fed by a non conventional pulsed current

Nsibi¹,

Chammam²,

Nehdi³

et al. 2015

Optik

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“…The temperatures of the neutrals and electrons are very close to each other and the discharge achieves local thermodynamic equilibrium. 7,15 The electrical behavior of the lamp within the stationary operation state is established during this phase. At the end of this phase, all Hg is evaporated and all electrical, thermal, and plasma parameters remain constant which marks the end of the warm-up and the beginning of stationary operation of the lamp.…”

Section: Preoperation Phasementioning

confidence: 99%

“…But it was usually focused on single processes and aspects of the warm-up or limited to the stationary operation phase. [3][4][5][6][7] The complex interplay between the single processes, especially the role of convection and the arc geometry, is still a challenging task. Convection works as a transport mechanism of energy from the bottom to the top of the lamp as well as from the arc center to the tube wall which depends on a set of other parameters.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical investigations on the warm-up of a high-pressure mercury discharge lamp

Zalach¹,

Araoud²,

Charrada³

et al. 2011

Physics of Plasmas

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Modern high-pressure discharge lamps are forced to provide instant light and hot relight capabilities-if possible at lower power units. A detailed understanding of the warm-up of high-pressure discharge lamps is therefore required. Complex fluid model codes were developed for the past years including more and more processes like two-dimensional treatment of convection trying to provide a more comprehensive and consistent description of high-pressure discharge lamps. However, there is a lack of experimental data to examine the performance of these models. This work provides a very complete set of geometrical, electrical, spectroscopic, and thermographic data according to the warm-up of a high-pressure mercury discharge lamp that is compared to the results of a state of the art fluid code. Quantitative agreement is achieved for single parameters like wall temperatures. But the paper also reveals the need for further investigations and improvements of the code.

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“…Some works are concerned with the description of the middle phase of the start-up 12 and the exploration of the lamp-network interaction during the warm-up phase by the use of a local thermodynamic equilibrium ͑LTE͒ model in which the axial convection is neglected. 13 More recently, we have developed a two-dimensional fluid model to investigate the dynamic behavior of the high-pressure mercury lamp during the last phase of the warm-up period. 14 However, no quantitative study on the effect of the current, tube length, and tube diameter on the behavior of the discharge during the warm-up phase has been developed in previous works.…”

Section: Introductionmentioning

confidence: 99%

A two-dimensional modeling of the warm-up phase of a high-pressure mercury discharge lamp

et al. 2010

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The main objective of this work is to provide a better understanding of the warm-up phase of high-intensity discharge lamps. As an example of application, we chose the high-pressure mercury lamp. Based on two-dimensional fluid model parameters, such as the electric current, the length and the diameter of the burner are modified and the effect of the convective transport is studied. This allows us to obtain a thorough understanding of the physics of these lamps in their transitory phase. The simulation of the warm-up phase is a must for the proper predictions of the lamp behavior and can be conducted by solving the energy balance, momentum, and Laplace's equations for the plasma, using the frame of the local thermodynamic equilibrium coupled with the energy balance of the wall.

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Modeling the warm-up phase of a high-pressure-lamps lighting network

Cited by 17 publications

References 4 publications

HID lamps fed by a non conventional pulsed current

HID lamps fed by a non conventional pulsed current

Experimental and theoretical investigations on the warm-up of a high-pressure mercury discharge lamp

A two-dimensional modeling of the warm-up phase of a high-pressure mercury discharge lamp

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