BEST PRACTICE MANUAL
LIGHTING
Prepared for
Bureau of Energy Efficiency,
(under Ministry of Power, Government of India)
Hall no.4, 2
nd
Floor,
NBCC Tower,
Bhikaji Cama Place,
New Delhi – 110066.
Indian Renewable Energy Development Agency,
Core 4A, East Court,
1
st
Floor, India Habitat Centre,
Lodhi Road,
New Delhi – 110003.
By
Devki Energy Consultancy Pvt. Ltd.,
405, Ivory Terrace,
R.C. Dutt Road,
Vadodara – 390007.
2006
2
CONTENTS
1
INTRODUCTION ---------------------------------------------------------------------------------------------------------------------------------4
1.1
BACKGROUND -----------------------------------------------------------------------------------------------------------------------------4
2
LIGHTING FUNDAMENTALS----------------------------------------------------------------------------------------------------------------5
2.1
BASIC THEORY ----------------------------------------------------------------------------------------------------------------------------5
2.2
LUMINOUS INTENSITY AND FLUX:------------------------------------------------------------------------------------------------------6
2.3
THE INVERSE SQUARE LAW-------------------------------------------------------------------------------------------------------------7
2.4
COLOUR TEMPERATURE-----------------------------------------------------------------------------------------------------------------7
2.5
COLOUR RENDERING --------------------------------------------------------------------------------------------------------------------8
3
LIGHTING SYSTEM COMPONENTS------------------------------------------------------------------------------------------------------9
3.1
INCANDESCENT (GLS) LAMPS----------------------------------------------------------------------------------------------------------9
3.2
TUNGSTEN-HALOGEN LAMPS--------------------------------------------------------------------------------------------------------- 1