Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building

Fernandes, Luís; Lee, Eleanor S.; DiBartolomeo, D.L.; McNeil, Andrew

doi:10.1016/j.enbuild.2013.10.009

Cited by 54 publications

(25 citation statements)

References 7 publications

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“…The façade orientation played a minor role in the order of 4% in the worst case of Stockholm. A field study [29] in a 51-storey office building in New York revealed a 20% reduction of Q el,al for dimming control relative to an occupancy based control.…”

Section: Lighting Controlmentioning

confidence: 99%

Daylight Performance of a Translucent Textile Membrane Roof with Thermal Insulation

et al. 2018

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Daylight usage in buildings improves visual comfort and lowers the final energy demand for artificial lighting. The question that always occurs is how much conservation can be achieved? New or rare materials and constructions have a lack of information about their application. Therefore, the current investigation quantifies the daylight and energy performance of a rare multi-layer textile membrane roof. A translucent, thermal insulation with a glass fibre fleece between the two roof membranes combines daylight usage and heating demand reduction. A sports hall built in 2017 is used as a case study building with 2300 m 2 membrane roof surface. The optical properties of the roof construction were measured with a total visual light transmittance τ v of 0.72% for a clean surface. A climate-based annual daylight modelling delivers daylight indicators for different construction scenarios. The results show that, in comparison to only one glass façade, the additional translucent and thermally insulated membrane roof construction increases the annual daylight autonomy (DA 700 ) from 0% to 1.5% and the continuous DA 700 from 15% to 38%. In the roof-covered areas of the sport field, this results in a 30% reduction of the electricity demand for artificial lighting from 19.7 kWh el /m 2 /a to 13.8 kWh el /m 2 /a, when a dimming control is used. The study also found that the influence of the soiling of one layer decreases its light transmittance by a factor 0.81. Two soiled layers lower τ v by a factor of 0.66 to 0.47%. This increases the electricity demand for lighting by only 12%. The results should be very valuable as a comparison and benchmark for planners and future buildings of a similar type.

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Section: Lighting Controlmentioning

confidence: 99%

Daylight Performance of a Translucent Textile Membrane Roof with Thermal Insulation

et al. 2018

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“…The L-IP router and some parts of the infrastructure of the system are placed in cabinets in the mentioned building (Noga et al 2012). The lamp control system interoperates with a daylight sensor and a temperature sensor (Fernandes et al 2014). They systematically provide information on the current level of ambient light intensity or the outside temperature to all devices running on the LonWorks technology.…”

Section: Bacs Infrastructurementioning

confidence: 99%

“…The measurements were carried out for the maximum load for the lamps and their Smart Ballasts (SungKwan Cho and Dhingra 2008;Burgos-Payan et al 2012;Ożadowicz and Grela 2014;Fernandes et al 2014).…”

Section: Implementation and Verification Of Control Scenariosmentioning

confidence: 99%

Energy saving in the street lighting control system—a new approach based on the EN-15232 standard

Ożadowicz

Grela

2016

Energy Efficiency

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The street lighting is one of major components in total energy consumption in cities. The paper is focused on a concept of street lamp control systems and function organization with remote monitoring, to reduce maintenance costs and energy consumption. A new approach to the definition of functional strategy organization for outdoor lighting systems is introduced in the paper. Proposed functional strategies are based on four efficiency classes of building automation and control systems (BACS) defined in the EN 15323 standard. They have been formulated, analysed and eventually implemented and verified in real experiment street lighting installation. This outdoor lighting system, designed by the authors, based on LonWorks (the ISO/IEC EN 14908) platform with a power line communication aimed to control high-pressure sodium lamps. The street lamps are integrated nodes of a building management system (BMS). The results of experimental tests for the proposed functional strategies, implemented with various control scenarios, show that they provide a great potential in reducing energy consumption by street lighting installations. In particular, the energy use can be reduced even by 45 % in comparison to conventional street lighting system, especially without the use of monitoring and control.

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“…Lighting efficiency has been widely discussed in the literature from many perspectives, including system design [2], maintenance [3, 4, 5 and 6], control strategies [7,8,9] and cost-benefit and life-cycle analysis [10,11]. However, the targeted buildings typically have ordinary tertiary uses, and are often administrative facilities [7,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…However, the targeted buildings typically have ordinary tertiary uses, and are often administrative facilities [7,12,13,14]. Most of the existing research focuses on the need for adequate control [15] of both daylight [8,16] and occupancy [16,17,18] conditions.…”

Section: Introductionmentioning

confidence: 99%

Reducing lighting electricity use in underground metro stations

Casals

Gangolells

Forcada

et al. 2016

Energy Conversion and Management

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Lighting systems are usually one of the largest electrical end-uses in underground metro stations. Taking into account that budget restrictions in publicly owned companies hinder energy efficiency retrofit projects that require high initial investments, affordable energy saving strategies are needed. This paper presents a low-cost approach for reducing lighting electricity use in underground stations, without affecting passengers' comfort or the metro operator's service. For this purpose, an adaptive lighting strategy of dimming the illuminance levels of artificial light sources has been developed. Dimming controls are based on the occupancy of the station, and the preventive maintenance and cleaning cycles of the luminaires. The stations' monthly occupancy patterns are defined through the k-means clustering technique. To illustrate its effectiveness, the method was applied to 115 underground stations of the Barcelona metro network. The results revealed overall electricity savings of 255.47 MW h on a biannual basis, which represents 36.22% of the stations' baseline lighting consumption. Individual energy savings were found to range from 25 to 87.5 MW h/year in the stations of the Barcelona metro network, depending on the number and profile of station users. The research findings will undoubtedly be useful for the future energy efficiency project plans of worldwide metro operators and managers of other underground spaces.Peer ReviewedPostprint (author's final draft

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Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building

Cited by 54 publications

References 7 publications

Daylight Performance of a Translucent Textile Membrane Roof with Thermal Insulation

Daylight Performance of a Translucent Textile Membrane Roof with Thermal Insulation

Energy saving in the street lighting control system—a new approach based on the EN-15232 standard

Reducing lighting electricity use in underground metro stations

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