Cheung Pei Shan, 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
Optimised luminaire distribution allows a single row of well-spaced GT7824E luminaires to be used to correctly light the space. In turn, this reduces the quantity of fittings and therefore the overall energy consumption.
- 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
Artificial lighting which responds to the natural light 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
Careful design of the lighting installation concentrates light onto the road surface and immediate surrounds. This ensures a well-lit environment and highly efficient use 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
Careful selection of high performance optics and good lighting scheme design minimises spill light onto adjacent areas and into the sky. This reduces waste energy consumption and ecological disturbance in the surrounding area.
- 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.
Noise barriers at Cheung Pei Shan road fitted with GT7824E
Cheung Pei Shan road is a busy main road in a highly populated residential area near Cheung Pei Shan in Tsuen Wan and Sheung Kwai Chung of Hong Kong. North of the road are resited villages from the old town of Tsuen Wan and Cheung Pei Shan. To its south are three large public housing estates.
To address the traffic noise impact on neighbouring residents, the Highways Department recently undertook the construction of approximately 645 metres of semi-enclosures and 870 metres of cantilevered noise barriers.
Having worked with Thorn on previous projects, the Highways Department already had a good relationship with Thorn and therefore approached the local team for a lighting solution.
Mr. Roger Leung, Sales Manager explains: "The noise barriers present a harsh environment and therefore demanded a durable lighting solution. To meet the requirements, we supplied more than 100 GT7824E (400W) tunnel luminaires.
"GT7824E is a dedicated tunnel lighting luminaire with robust construction and corrosion protection. Offering a variety of optical systems to suit different lamps and installation geometries, it provides a uniform symmetrical light distribution with excellent glare control.
"GT7824E's lightweight construction with continuous closing clips allows seamless continuous mounting for an aesthetically pleasing effect. For ease of maintenance, it also offers front opening without tools, removable gear and easy access to the lamp and connections."
As a result of the installation, the Highways Department benefits from a highly robust and easy to maintain lighting solution.
Key Facts
- IP65 rated for durability
- Variety of fixing points with inclination adjustment from -15°to 65°
- Designed and manufactured to comply with EN60598