Cabot Circus
Cabot Circus Shopping Centre - Bristol
Background
Cabot Circus is a covered shopping centre in the heart of Bristol city centre. The centre contains shops, offices, a hotel, apartments and a cinema. It is a large area with a total of 139,350 m2 (1,500,000 sq ft) floor space. It opened in September 2008.
Hidden from the public eye is a vast network of corridors and a large underground service yard. This back-of-house area allows all supplies to go to the retail shops unnoticed. The lighting in these areas was still using inefficient and costly conventional fluorescent lighting. Time for an upgrade to improve the lighting levels and safe energy. In line with the strategy of owner Hammerson, the upgrade of the lighting is used to introduce a site-wide Mymesh digital backbone to lay the foundation for a Smart Shopping Centre.
Challenge
The Shopping Centre can be roughly divided in three parts: Front-of-House, Back-of-House and Car parking. The first phase of the project is the Back-of-House. This is a large area of corridors, stairwells, storage, plant rooms and a service yard. The lighting was still conventional Fluorescent, so due an upgrade.
Solution
All the lighting, mainly linear non-corrosive battens and bulkheads, was replaced with a Fagerhult LED luminaire. All luminaires are Mymesh connected, This generates a wireless digital backbone across the estate. Where appropriate microwave sensors were integrated.
A 3D model of the shopping centre was created to give each asset its own X,Y,Z coordinates. This will allow for future location based services.
Apart form controlling the lighting based on high-end trimming, the Mymesh system is also monitoring the emergency lighting. The Lumitel platform instantly gives a report if anything should fail.
Benefits
The energy savings are vast. Most corridors are sparsely used, especially at night. The general light level is calibrated and already generates a saving of 50%. By dimming for absence, there is a further 50% saving at least.
Furthermore, the Mymesh system gives a real-time insight in the usage of the site by giving an overview of areas in presence with an interval of 5 seconds. This will allow further optimisation of the site's energy usage.
SHARE
