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Aberdeen footbridge, Hong Kong

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  • Aberdeen footbridge, Hong Kong
  • Aberdeen footbridge, Hong Kong
  • Aberdeen footbridge, Hong Kong
  • Lamp efficacy

    Lamp efficacy

    Ensuring the lamp efficiently converts electricity into light (lm/W).

  • Ballast classification

    Ballast classification

    Controlling the electricity supply to the lamp (Energy Efficiency Index).

  • Luminaire distribution

    Luminaire distribution

    The luminaire distribution gives a good quality uniform light at wide fitting spaces. This provides the correct lighting with fewer luminaires.

  • System efficacy

    System efficacy

    Combining optical and thermal control within the luminaire (luminaire lm/W).

  • Presence/absence detection

    Presence/absence detection

    Presence: Lights automatically turn on/off with movement. Absence: Lights automatically turn off and must be manually switched on.

  • Daylight detection

    Daylight detection

    Combining electronic dimmable control gear with photoelectric control allows the efficient use of daylight, reducing energy use in daylight conditions.

  • Constant illuminance

    Constant illuminance

    A function designed to produce correct light levels for the duration of the maintenance period.

  • Task-scene setting

    Task-scene setting

    Allowing the user to set scenes and adapt the lighting to different tasks.

  • Timed off

    Timed off

    Automatic cut-off can be installed to turn all lights off during unoccupied hours.

  • Task lighting

    Task lighting

    Lighting task areas with the correct amount of light.

  • Zoning of lighting

    Zoning of lighting

    Lighting is zoned according to area use.

  • Maintenance schedule

    Maintenance schedule

    Maintenance must be performed in response to product age, performance and environment.

  • Waste light

    Waste light

    The use of recessed luminaires allows tighter control of obtrusive light and reduces upwards spill light. This prevents energy being used on waste light.

  • Reflectance

    Reflectance

    Taking advantage of light which is reflected from the surface within the space.

  • Visible smart metering

    Visible smart metering

    Results of actions can be quickly seen as increased or decreased energy use to encourage responsible energy consumption.

Duoproof refurbishes Aberdeen footbridge, Hong Kong

Route 1 in Hong Kong is a major artery that runs in a generally north-south direction from Aberdeen to Sha Tin. The route begins at Aberdeen Praya Road in southern Hong Kong Island, which benefits from Aberdeen footbridge. Vitally important for safety, the footbridge enables thousands of pedestrians to cross this high volume, multiple lane road every year. However, with the footbridge’s lighting in need of refurbishment, the lighting division of the Highways Department approached Thorn to set about replacing the waterproof fittings.

The original lighting was of poor quality and low efficiency. The objectives were to therefore firstly provide comfort and safety, and secondly achieve energy savings. Ease of maintenance was also a key priority.

Although traditionally used as a clean room fitting, Thorn’s Duoproof luminaire with 2x28W fluorescent lamps and custom step dimming offered an ideal lighting solution for the footbridge. As well as using dimming to reduce energy consumption, Duoproof reduces glare for pedestrian comfort.

Importantly, Duoproof is recessed, tightly sealed to the ceiling, and IP65 and IK07 rated. This means it can be easily jet washed and cleaned with detergents from the ground, without the use of a ladder. What’s more, because it is recessed with no dirt or water traps, Duoproof presents a visually cleaner space with significantly lower maintenance demands.

Feedback from local residents and workers has been very positive. One lady said: “I have to walk across Aberdeen footbridge after I get off the bus everyday. It is brighter than before and I feel safer at night.”

Duoproof key facts

  • Recessed, tightly sealed luminaire for reduced maintenance and ease of cleaning
  • Dimming with photoelectric control saves energy
  • IP65 and IP07 rated