1. Insulation Objectives
Understand how thermal energy transfer can be reduced
Know some examples of insulation methods in the home

2. Name the three ways in which energy is lost from the home.

3. Insulation
To keep things warm we need to stop CONVECTION, CONDUCTION & RADIATION.
The methods we use are types of INSULATION.

4. CONDUCTION
THROUGH SOLIDS
Walls
Windows
Roof
Floors

5. Air gaps between bricks
THROUGH GASES
CONVECTION
Loft Space
Chimney
Air gaps between bricks
Draughts

6. Between radiators and walls
FROM HOT SURFACES
RADIATION
Hot water tank
Between radiators and walls
Hot pipes

7. What can we do to prevent this energy loss?

8. Walls Floors Roof Window Foam in wall cavity to stop CONDUCTION
Carpets trap air to stop CONDUCTION
Floors
Layer of roof insulation stops CONDUCTION
Roof
Double glazing – air gap stops CONDUCTION
Window

9. Air gaps between bricks
Loft Space
Reducing loft space reduces CONVECTION
Air gaps between bricks
Using foam in the cavity reduces CONVECTION
Using draught excluders reduces CONVECTION
Draughts
Blocking unused chimneys reduces CONVECTION
Chimney

10. Hot water tank Hot pipes
Jackets lined with silvery material stop RADIATION
Silver foil at the back of the radiator stops RADIATION
Radiators
Hot pipes
Silvery pipe lagging stops RADIATION

11. STOPPING Conduction, Convection & Radiation
Convection and conduction - take away the particles (a vacuum).
Conduction – use insulating materials

12. Radiation - use shiny surfaces to REFLECT the heat back into the substance.

13. ACTIVITY
Produce a leaflet for B&Q explaining how customers can reduce their fuel bills this winter by using INSULATION around their home.