Thermal Resistance for Material Layers
Combine layer thicknesses and heat conductivities to resistance for each unit area.
Your numbers
Thermal resistance normalized by area
Steady layers for one dimension with perfect contact. Surface films, thermal bridges and moisture effects no dey included.
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Formula
R=ΣLᵢ/kᵢ; U=1/R
Combine layer thicknesses and heat conductivities to resistance for each unit area.
Example wey show the calculation
- Thickness of each layer (m)
- 0.1, 0.2
- Heat conductivities for layers (W/m·K)
- 0.04, 0.2
- Thermal resistance normalized by area
- 3.5 m²·K/W
- Heat-transmittance U without surface films
- 0.285714285714 W/m²·K
Where e fit work and limits
Steady layers for one dimension with perfect contact. Surface films, thermal bridges and moisture effects no dey included.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: eff589740323 · Example don get check: