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

Dubois, Marie-Claude; Blomsterberg, Åke

doi:10.1016/j.enbuild.2011.07.001

Cited by 281 publications

(143 citation statements)

References 43 publications

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“…Moreover, there is an undoubtedly clear preference for daylight from interviewed office workers [18]. Several studies confirm that access to daylight and view are crucial for humans` well-being and health [20][21][22][23][24][25], and there is clear evidence that daylight regulate circadian cycles [9,[26][27][28]. Moreover, several respondents believed that daylight and view are alleviating stress and showed a clear preference for offices with windows, due to the possibility of having an outside view [9].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies confirm that access to daylight and view are crucial for humans` well-being and health [20][21][22][23][24][25], and there is clear evidence that daylight regulate circadian cycles [9,[26][27][28]. Moreover, several respondents believed that daylight and view are alleviating stress and showed a clear preference for offices with windows, due to the possibility of having an outside view [9]. The presence of windows allows occupants to get information on the time of the day and the weather, can limit eye fatigue by providing a distant horizon to focus on, and limit the feeling of claustrophobia [24].…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies explored and confirmed that the energy performance of buildings is highly dependent on the design, functionality, and area of the transparent façades in office buildings [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Solar Shading in Low Energy Office Buildings - Design Strategy and User Perception

Grynning

Lolli

Wågø

et al. 2017

Journal of Daylighting

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The objective of this paper is to investigate the visual comfort and quality of daylight in modern office buildings in the Nordic climate. A study of various daylight-related aspects and qualities was carried out for three different office buildings, using a combination of quantitative and qualitative methods. The focus was on a combination of user perception of daylight quality and assessment of the daylight amount and quality, by using the daylight factor (DF) and useful daylight illuminance parameters. Previous studies and experiences from construction examples indicate that users, in general, complain about lack of manual control of systems and too low daylight levels, even if the requirements in the building codes are satisfied. Furthermore, they complain about control algorithms of the shading devices, which cause undesired automatic opening and closure of such devices. Thus, causing disturbances and irritation amongst the users. Hence, interviews with key personnel in a modern and architecturally acclaimed office building were carried out in addition to an in-depth analysis of previous surveys of a zero-energy office building. It was found that automatic moveable shading can be regarded as a source of discomfort. This is due to the lack of manual-control override possibilities, which causes disturbances due to the system moving up and down. In one of the offices, the users disabled the exterior shading system. However, the external fixed shading and the internal manually operated roller blinds were found to be satisfactory. The results from a previous study showed that the users in the Marche building are in general satisfied with the daylight. One of the main reasons for this, according to the users, is that they have manual control of the shading system. Manual control of the shading systems is preferred by users in the office buildings studied. Daylight simulations showed that the external fixed shading system combined with internal shading give satisfactory DFs and an even distribution of the daylight levels in a south-facing office. According to the users, the external fixed shading is a good system for south facing offices, when local glare issues can be solved by interior roller shades. The DF gives information of the daylight distribution, which in certain cases might be adequate. However, this is not enough as a descriptor for user comfort, as other factors such as manual control possibilities and glare discomfort are not included.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Solar Shading in Low Energy Office Buildings - Design Strategy and User Perception

Grynning

Lolli

Wågø

et al. 2017

Journal of Daylighting

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“…Because the total energy consumption in buildings accounts for nearly 40% of the primary energy use in many countries, a number of studies on energy-saving technologies for buildings have been conducted with a focus on the thermal performance of envelopes, efficiency enhancement of lighting and air-conditioning facilities, and renewable energy applications [4][5][6][7]. In order to reduce the lighting energy in buildings, high-efficiency light-emitting diode (LED) lamps and light-dimming control using daylight harvesting have been developed [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synergetic Effect between Lighting Efficiency Enhancement and Building Energy Reduction Using Alternative Thermal Operating System of Indoor LED Lighting

et al. 2015

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Abstract:We investigated the synergetic effect between light-emitting diode (LED) lighting efficiency and building energy savings in heating and cooling using an alternative thermal operating system (ATOS) of indoor LED lighting integrated with the ventilation system of a building as an active cooling device. The heat generated from LED lighting and the indoor lighting illuminance were experimentally determined. The indoor heat gains in cooling and heating periods were determined using measurement data; the annual energy savings of an office building in heating and cooling were calculated through simulation. The LED lighting illuminance increased by approximately 40% and the lighting contribution for indoor heat gain was 7.8% in summer, while 69.8% in winter with the ATOS. Consequently, the annual total energy use of the office building could be reduced by 5.9%; the energy use in cooling and heating was reduced by 18.4% and 3.3%, respectively. OPEN ACCESSEnergies 2015, 8 8737

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“…Lighting system accounts 20 -45% of their energy consumption [1]. In U.S, lighting consumed 10% of total electricity energy in commercial buildings [2].…”

Section: Introductionmentioning

confidence: 99%

Lighting system design according to different standards in office building: A technical and economic evaluations

Wagiman

Abdullah

2018

J. Phys.: Conf. Ser.

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Abstract. Lighting system is an important sub-system in office buildings. A good design can contribute energy saving and visual comfort to occupants. This paper presents a comparison of lighting system design according to different standards: European Standard EN12464-1 and Malaysian Standard MS1525 in terms of average illuminance level and illuminance uniformity. In the design, the illuminance measurement is according to the Illuminating Engineering Society of North America (IESNA) and the European Standard EN12464-1. Three types of luminaires are considered which are: T8, T5 and light emitting diode (LED) lamps. The technical and economic evaluations are taken into account in this paper. The technical evaluations are considered the number of luminaires, average illuminance level and illuminance uniformity. The energy consumption (EC) and lighting energy numeric indicator (LENI) are considered according to the European Standard EN15193. Meanwhile, the economic evaluation involves billings and luminaires costs and billing savings. The case study is an office room and it is modelled and simulated using DIALux software. The results show that the design according to the European Standard EN12464-1 with uniformity based method that used T5 lamps had contributed to the highest number of luminaires and costs. Whereas, the design according to the Malaysian Standard MS1525 with illuminance level based method that used LED lamps had contributed to the lowest number of luminaires and costs. Thus it can provide the higher billing savings. It can be concluded the LED has great potential to replace T8 and T5 lamps.

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

Cited by 281 publications

References 43 publications

Solar Shading in Low Energy Office Buildings - Design Strategy and User Perception

Solar Shading in Low Energy Office Buildings - Design Strategy and User Perception

Synergetic Effect between Lighting Efficiency Enhancement and Building Energy Reduction Using Alternative Thermal Operating System of Indoor LED Lighting

Lighting system design according to different standards in office building: A technical and economic evaluations

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