Good lighting designs are essential to ensure that these technologies are able to reach their maximum potential. An effective and efficient design takes into consideration the available efficient lighting technologies, design constraints imposed by the base building; and most importantly meets user needs and preferences.
Colour of walls and ceilings: The colour of the walls, ceilings and furnishings should be kept light so that it reflects more light to the workspace areas Lighting layouts should be developed taking in consideration the different lighting zones within the workspace.
Daylighting is the most easily available, renewable source of energy. Harvesting daylight for outside lighting, atria lighting can help save considerable amount of energy and also uplift the mood of the workers. Sky lights, full length windows and light shelves can be used to maximise light penetration.
Window glazing is useful in controlling the glare of sunlight as well as in controlling the excessive heat.
Blinds can be used to deflect and control the amount of natural light.
Task Specific Lighting:
Lighting efficiency can be increased by maintaining background lighting levels of 160-220W throughout the office area. This can be supplemented by using localised desk lighting to provide the required illuminance for specific tasks. Eg. work stations near the windows require less artificial lighting as compared to stations in the centre.
Occupancy sensor controls:
Energy consumption can also be reduced through sophisticated lighting control systems.
Motion detectors can be installed in rooms, supplying light only when required.
Choose sensors which meet the requirements of the area to be monitored Eg sedimentary sensors are more suited to monitor occupancy near work desks since these are sensitive to even the slight finger movements of a person.
Sensors also need to be positioned accurately to avoid significant blind spots
Integrated Lighting systems:
These are intelligent lighting systems which consist of sensors which communicate directly with the ballasts to dim or switch off light lamps. These sensors include motion detectors as well as light sensors to analyse the level of natural light available. The more sophisticated systems integrate the lighting, air conditioning and indoor air quality controls.