U-Value Calculator
Introduction & Importance
U-value, or thermal transmittance, is a crucial factor in building physics and energy efficiency. It measures how well a building element prevents heat transfer…
How to Use This Calculator
- Enter the thickness of the material in millimeters.
- Enter the thermal conductivity of the material in W/mK.
- Click ‘Calculate’.
Formula & Methodology
The formula for calculating U-value is: U = 1 / (thickness / conductivity).
Real-World Examples
Data & Statistics
| Material | U-Value (W/m²K) |
|---|---|
| Brick | 0.6 – 0.8 |
Expert Tips
- Use high U-value materials for passive cooling.
- Use low U-value materials for passive heating.
Interactive FAQ
What is a good U-value for walls?
For walls, a U-value of 0.3 W/m²K or lower is recommended for energy-efficient buildings.