Student Worksheet

Whole School Lighting Audit

In groups you will be auditing a number of rooms in the school to measure:

The light level using a lux metre.
The number and types of lights.

What is a lux meter? A lux meter is used to measure light so you can identify over-lit areas in your school where globes can be removed. This is called delamping.

Set your lux meter to 2000 lux as a measurement.
Measure lux levels at table or waist height.
Test a room with the lighting on and off.
Visit four or five different points in a room.
Compare your findings to the National Standards.

Lux levels - National Standards

AREA	LEVEL (LUX)
General purpose classrooms (at desks and whiteboard)	240
Physical education class area	240
Change rooms	80 - 100
Technical studies/computers	320
Science/home economics/music/art/trades	320
Assemble hall (auditorium areas)	100
Library reading areas	320
Library shelves	240
Office and administration	320
Corridors, foyers	80

Which light is which?

Lighting Audit Data tables

Room Name	Light level measured (LUX)	Light level standard (LUX)	Incandescent light	Energy efficient Light






TOTAL

Room Name	Fluorescent light	Halogen downlight	LED downlight






TOTAL

Analysing results

1. Compare the light level data you collected to the National Standards. Which rooms would you make recommendation to delamp?

2. Based on your results use the table below to calculate the money and greenhouse gas savings if your school switched all its halogens to LEDs.

Switching 1 halogen for 1 LED saves 800Kg C0₂e
Switching 1 halogen for 1 LED saves $25 per year

Calculate the tonnes of C0₂e saved:
Calculate the total amount of money saved:

Design your own energy-saving initiative

Working in small groups, your task is to design a community energy saving program that encourages your community to use LESS energy overall.

Each group should prepare a one or two slide presentation describing the core elements of their program and should present these to the class. Presentations should include:

How the program would work.
Resources required.
Timescale.
Potential problems.
Environmental and social benefits.

You will present your ideas to the class.

Take it home!

Download the Take It Home - Lighting Audit and complete it at home.

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