Energy Efficient Buildings - GCSE Physics

It is important to reduce any unwanted energy losses from buildings. This video shows some of the main ways in which it achieved. These include insulated walls (cavity wall insulation), loft insulation and double glazed windows.

In order to make a building more energy efficient, we must reduce its thermal conductivity. The lower the thermal conductivity, the less energy that is transferred outside of the house. Hence less energy is wasted, making the building more efficient. The main way we reduce the thermal conductivity of an object is to insulate it.

Thanks for watching,

Lewis

Relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy)
Edexcel
CCEA (Physics only)
OCR A
OCR B
WJEC

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[saragarber]

I wanted to thank you for all the time and effort spent on every individual video! The visual dynamics using Lego and other objects really help me to understand concepts better!

[lewisbaker]

This is really gonna help me pass my GCSEs

[rubynewman]

Why is cavity wall insulation made of polystyrene balls, with air spaces, rather than just a solid block of an insulating material (with no air spaces)?

[shahzarbukhlaw]

gosh, I just realised why its called "cavity walls" as there is a gap between the exterior and interior wall. lol