Geography KS3/4: Efficient energy

Passive homes have no central heating and generate bills approximately half that of the Stonehaven residents.

House building expert Thomas Froehlich, explains why the passive houses are so energy efficient.

They are built to face the sun and use the solar energy for heating, and are super-insulated and draught-free.

People and household appliances generate heat (thermal energy) and this does not escape from the house.

There is no letter box or cat flap to allow the heat to escape in this airtight house.

Solar panels on the roof heat the water, and a log burner heats the home or the water when there is no sun.

A heat recovery system draws cool air from the outside in and heats it using energy from within the house.

This house focuses on conserving energy and not creating additional energy, which results in much smaller energy bills and less wastage overall.

This clip is from the series Save Your Energy.

Teacher Notes

Students could design their own ‘passive house’, using the ideas discussed to stimulate their own ideas.

This could be used to create a poster to encourage people to try and conserve energy and reduce energy wastage.

Students could be asked to work out how much their household energy bills are per year using numeracy skills.

Curriculum Notes

This clip will be relevant for teaching Geography at KS3 and GCSE in England and National 4/5 in Scotland. Appears in OCR, Edexcel, AQA, WJEC in England and Wales, CCEA GCSE in Northern Ireland and SQA.

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Wasting energy