Corridor lighting retrofit based on occupancy and daylight sensors: implementation and energy savings compared to LED lighting

Akrasakis, Stavros; Tsikalakis, Antonis G.

doi:10.1080/17512549.2017.1325399

Cited by 5 publications

(2 citation statements)

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“…Research on office buildings proposed that spaces such as corridors may present significant energy savings (Akrasakis and Tsikalakis, 2018), implying that intermittently used spaces such as corridors offer potential energy savings through occupancy-based sensors. This perception and the work of others (Hebert et al, 2014, Guo et al, 2010, Papamichael, 2017, support the selection of intermittently used spaces for this research.…”

Section: Hypothesismentioning

confidence: 99%

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Energy saving potential of occupancy sensors in intermittent-use space types.

Alexander¹

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<p>For decades, studies have been suggesting the idea of occupancy sensors in intermittent use spaces for energy savings. This work investigates the potential energy savings of occupancy sensors in hallways, stairwells, seminar rooms and lavatories of an education building. Lighting is one of the largest consumers of energy in the building industry and these space types are often fully illuminated for long periods of vacancy. Lighting is for the user, not the building. Discussions centre around light use habits, energy saving behaviours and sensor technology such as time delay and daylight sensors. The experiment uses wireless light sensors and PIR sensors to measure light energy use and occupant use of 20 intermittent use spaces. A user survey was planned to run alongside the experiment to investigate user perceptions of changes in lighting but was discontinued due to unresolved software issues. Results of the experiment encouraged the use of occupancy sensors in intermittent use spaces. Lavatories attained highest energy saving potential 54%, seminar rooms highest annual cost savings per fitting $15.47 and highest annual energy savings 482kWh and hallways calculated the quickest payback of 8.6 years. Hallways, stairwells, seminar rooms and lavatories all offer potential for energy savings, supporting the theoretical ideas and success of occupancy sensors in intermittent use spaces.</p>

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Section: Hypothesismentioning

confidence: 99%

“…This is a convenient solution where replacing all the light fittings is not a feasible option. Akrasakis and Tsikalakis (2018) performed an experiment in an education building corridor and found higher energy savings with T8 lamps and occupancy sensors, than changing to LED. The combination of LED and occupancy sensors will provide the greatest savings.…”

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confidence: 99%