Energy saving potential and strategies for electric lighting in future North European, low energy office buildings: A literature review

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Energy saving potential and strategies for electric lighting in future North European, low energy office buildings: A literature review. / Dubois, Marie-Claude; Blomsterberg, Åke.

In: Energy and Buildings, Vol. 43, No. 10, 2011, p. 2572-2582.

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TY - JOUR

T1 - Energy saving potential and strategies for electric lighting in future North European, low energy office buildings: A literature review

AU - Dubois, Marie-Claude

AU - Blomsterberg, Åke

PY - 2011

Y1 - 2011

N2 - This article presents key energy use figures and explores the energy saving potential for electric lighting in office buildings based on a review of relevant literature, with special emphasis on a North European context. The review reveals that theoretical calculations, measurements in full-scale rooms and simulations with validated lighting programs indicate that an energy intensity of around 10 kWh/m(2) yr is a realistic target for office electric lighting in future low energy office buildings. This target would yield a significant reduction in energy intensity of at least 50% compared to the actual average electricity use for lighting (21 kWh/m(2) yr in Sweden). Strategies for reducing energy use for electric lighting are presented and discussed, which include: improvements in lamp, ballast and luminaire technology, use of task/ambient lighting, improvement in maintenance and utilization factor, reduction of maintained illuminance levels and total switch-on time, use of manual dimming and switch-off occupancy sensors. Strategies based on daylight harvesting are also presented and the relevant design aspects such as effects of window characteristics, properties of shading devices, reflectance of inner surfaces, ceiling and partition height are discussed. (C) 2011 Elsevier B.V. All rights reserved.

AB - This article presents key energy use figures and explores the energy saving potential for electric lighting in office buildings based on a review of relevant literature, with special emphasis on a North European context. The review reveals that theoretical calculations, measurements in full-scale rooms and simulations with validated lighting programs indicate that an energy intensity of around 10 kWh/m(2) yr is a realistic target for office electric lighting in future low energy office buildings. This target would yield a significant reduction in energy intensity of at least 50% compared to the actual average electricity use for lighting (21 kWh/m(2) yr in Sweden). Strategies for reducing energy use for electric lighting are presented and discussed, which include: improvements in lamp, ballast and luminaire technology, use of task/ambient lighting, improvement in maintenance and utilization factor, reduction of maintained illuminance levels and total switch-on time, use of manual dimming and switch-off occupancy sensors. Strategies based on daylight harvesting are also presented and the relevant design aspects such as effects of window characteristics, properties of shading devices, reflectance of inner surfaces, ceiling and partition height are discussed. (C) 2011 Elsevier B.V. All rights reserved.

KW - Office

KW - Lighting

KW - Daylight harvesting

KW - Occupancy controls

KW - Manual or

KW - automatic dimming

KW - Potential electricity savings

KW - Illuminance

KW - Windows

KW - Shading devices

KW - Reflectance

U2 - 10.1016/j.enbuild.2011.07.001

DO - 10.1016/j.enbuild.2011.07.001

M3 - Review article

VL - 43

SP - 2572

EP - 2582

JO - Energy and Buildings

T2 - Energy and Buildings

JF - Energy and Buildings

SN - 1872-6178

IS - 10

ER -