Daylight lighting

Daylight is the (a)  

Sources of daylight lighting____

• light

• sunlight

• clear

• sky light

Consists of sunlight or daylight

• Artificial Lighting

• Fluorescent Light Bulbs

• Natural Lighting

• LED

State the factors influencing the quantity of daylight

• Type of glazing

• Brightness

• Obstruction

• Room Dismensions

• Fenestration

Identify conditions of the sky

• Combined with sun

• Overcast sky

• Partly Cloudy sky

• Cloudy sky

• Clear sky

Identify conditions of the sky

• Combined with sun

• Overcast sky

• Partly Cloudy sky

• Cloudy sky

• Clear sky

Identify conditions of the sky

• Combined with sun

• Overcast sky

• Clear sky

• Sunglight

• Partly Cloudy sky

Daylight factor is the summation of the three components (a)  

Identify components terms for A, B & C

• Internally reflected component (IRC)

• Natural light component (NLC)

• Externally reflected component (ERC)

• Harvest daylight component (HDC)

• Sky component (SC)

• Daylight factor components

• no-sky line’

• Direct sunlight is excluded from both values of illuminance.

• Average daylight factor