CT30104-Lighting Systems in BuildingsLecture 01

Eng G R Madushan KumaraEng. G.R. Madushan Kumara(BSc. Eng.)

Light Architecture & Science point of view. Light Architecture & Science point of view. The visual process. Colour. The relationship between production of light

& eye sensitivity.Usage of day light. Artificial lighting. Standards for lighting. Lighting design. Selection of lighting system.

Optimization of lighting performance.Optimization of lighting performance. Control of lighting. Emergency lighting.g y g g Security system lighting.New trends.

40 % from continuous assessments 40 % from continuous assessments 60% from final exam.

The deliberate use of light to achieve a The deliberate use of light to achieve a practical or aesthetic effect.

Includes the use of both artificial light sources and Natural lights.

Natural illumination by capturing daylight.

Ensure the safety of people. Ensure the safety of people. Ensure the safety of properties (Security

Lighting). Provide the facility to performs visual tasks.Make a pleasant visual environment.

Natural and Artificial Lighting.Natural and Artificial Lighting. Indoor and Outdoor Lighting.

Major source is the Sun.Major source is the Sun.Optimizing of day light is important. Saves energy.gy 100% greener.Use windows, skylights, or light shelves., y g , g

Generate light using electrical energy.Generate light using electrical energy.Use lamps.Design according to purpose of area (Usage).g g p p ( g )

Lighting systems inside the buildings, Lighting systems inside the buildings, warehouses, factories etc

Lighting of outdoor areas such has roads, Lighting of outdoor areas such has roads, landscaping areas, sports arenas, grounds, gardens etc

Automobile lighting.

A replaceable component such as A replaceable component such as an incandescent light bulb, which is designed to produce light from electricity.

Usually have a base of ceramic, metal, glass or plastic, which makes an electrical connection in the socket of a light fixture connection in the socket of a light fixture.

May be made with a screw-thread base, two metal pins, two metal caps or a bayonet cap.metal pins, two metal caps or a bayonet cap.

Incandescent Lamp Incandescent Lamp Fluorescent Lamp Compact Fluorescent (CFL)Lamp p ( ) p Light Emitting Diode (LED) Lamp Sodium Vapor Lampp pMetal Halide LampHalogen Lamp Laser diode lamp

Occurs when part of an interior is much Occurs when part of an interior is much brighter than general brightness in the interior.

Have two effects. Can reduce the vision level (Disability glare).

C di f t th i i (Di f t gl ) Can discomfort the vision (Discomfort glare).

BS EN 12464-1:2011-Light and lighting, BS EN 12464 1:2011 Light and lighting, Lighting of work places. Indoor work places.

BS 5266 :2011 - Emergency lighting. BS 1376 :1974 - Specification for colours of

light signals. BS 5489-1 :2013 - Code of practice for the

design of road lighting. BS 8206 2 :2008 Lighting for buildings BS 8206-2 :2008 - Lighting for buildings.

Code of practice for day lighting.

Controlling the lights inside a building most Controlling the lights inside a building most efficient manner using a automatic controlling system.

Most Building Management Systems (BMS) has provided the facilities to do so.Offi ki L bb T il t Office working areas, Lobby areas, Toilet areas.

Mostly occupancy sensors are usedMostly occupancy sensors are used.

Design to minimize the energy usage.Design to minimize the energy usage.Give maximum energy efficacy.Most of the time try to capitalized the day y p y

light. Sometimes use BMS to control lighting of

selected areas.

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