Energy efficiency
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Denne side er ikke tilgængelig på dansk i Xperimania II. Hvis du ønsker, at dette sprog skal være tilgængeligt i fremtiden, så send venligst en e-mail til xperimania@eun.org Vi beklager eventuelle gener, som dette måtte medføre. Holdet bag Xperimania |
| Property of Polyurethane foams | Uses |
| Lightweight | - Furniture, soles of shoes - Inside the walls of refrigerators - Insulation materials for roofs, walls |
Experiment:
- Get two small light cardboard or wood boxes.
- Spray polyurethane foam in one of them and let it dry.
- Place both boxes on top of a layer of ice-cubes.
- Get two small light cardboard or wood boxes.
- Spray polyurethane foam in one of them and let it dry.
- Place both boxes on top of a layer of ice-cubes.
Leading questions:
- Can you feel cold on the top side of the box?
- Can you explain what's happening?
- Can you set up other easy experiments that show energy efficiency in action?
- Can you find applications of this property in your house or city?
Click "Download" to get the full kit. - Can you feel cold on the top side of the box?
- Can you explain what's happening?
- Can you set up other easy experiments that show energy efficiency in action?
- Can you find applications of this property in your house or city?
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