Dimming of Metal Halide Lamps

Gibson, Ray

doi:10.1080/00994480.1994.10748076

Cited by 19 publications

(3 citation statements)

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“…It is well known that operating metal halide discharge lamps at powers lower than their rated power results in changes to luminous output, correlated colour temperature (CCT), colour chromaticities (x and y) and CIE General Colour Rendering Index (CRI). Keijser 2 quantifies these effects for CMH discharge lamps rated to have CCT 3000 K at 70 W. Earlier studies 3,4 illustrate similar effects for metal halide discharge lamps with silica arctubes. More recently Zhu et al 5 and Stockwald 6 describe CMH discharge lamps specifically designed to have small changes in CCT when operated at reduced powers.…”

Section: Introductionmentioning

confidence: 90%

Effects of dimming 150 W ceramic metal halide lamps on efficacy, reliability and lifetime

Guest¹,

Girach²,

Mucklejohn³

et al. 2008

Lighting Research & Technology

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Dimming high-intensity discharge (HID) lamps is often proposed as part of energy management schemes for lighting installations. However, the impacts of dimming on HID lamp performance are not well characterised. The impacts of operating 150W ceramic metal halide discharge (CMH) lamps for prolonged periods (up to 11 000 h) at reduced powers have been quantified. CMH lamps of 150W operated at 100W and 76W showed no significant differences in lumen maintenance, survival and colour rendering index compared to similar lamps operated at the rated power for the same time. The experiments confirm that the concept of dimming CMH lamps can be employed in roadlighting schemes, such as NumeLiTe, without detrimental consequences on lamp performance.

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Section: Introductionmentioning

confidence: 90%

Effects of dimming 150 W ceramic metal halide lamps on efficacy, reliability and lifetime

Guest¹,

Girach²,

Mucklejohn³

et al. 2008

Lighting Research & Technology

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show abstract

“…This report, largely based on the work of Smith & Zhu [16] and Gibson [17], highlighted the lack of information available from lamp manufacturers about the impacts of the use of dimming systems.…”

Section: An Overview Of Publications 1994 -2014mentioning

confidence: 99%

An Overview of the Impact of Dimming Metal Halide Discharge Lamps

Mucklejohn¹

2015

IEEE Trans. on Ind. Applicat.

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A summary of the changes induced by operating metal halide discharge lamps below their rated power is presented. The changes for lamps which operate under saturated dose conditions are a lowering of luminous efficacy, an increase in Correlated Colour Temperature and a reduction in colour rendering properties. The impacts of these changes are reviewed with respect to the visual appearance of lighting installations, the reliability of lamps when operated for prolonged periods at reduced powers and some commercial consequences. The changes in output characteristics are much less marked if the lamp operates in an unsaturated dose regime.

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“…O interesse propiciado pelo uso racional da energia (ou conservação) tem motivado a introdução no mercado de outros tipos de controle (não apenas ligado e desligado). O controle contínuo, em lâmpada HID, dimming, é realidade, ainda que em determinadas situações possa resultar em aumento da depreciação do fluxo luminoso (Gibson, 1994) (Dyno, 1999), quando foi realizado experimento sobre as alterações resultantes da redução do fluxo luminoso.…”

Section: Elementos Para Controlesunclassified

Refletância, visibilidade e luminância como fatores para melhoria da iluminação pública

Burini¹

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Dimming of Metal Halide Lamps

Cited by 19 publications

References 1 publication

Effects of dimming 150 W ceramic metal halide lamps on efficacy, reliability and lifetime

Effects of dimming 150 W ceramic metal halide lamps on efficacy, reliability and lifetime

An Overview of the Impact of Dimming Metal Halide Discharge Lamps

Refletância, visibilidade e luminância como fatores para melhoria da iluminação pública

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