Sustainable Living: 3M FuturewiseTown PlanIntroductionGo BackGo Next: Convection currents3M

Front of school building

Back to front of school building

2. Wall

Reduce energy lost

Although cavity walls trap air and air is a good insulator of heat,
the gap between the walls is quite large and the temperature
difference between the two walls would set up convection currents
so heat loss still occurs.

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