🔥 Heat Conduction Calculator
Fourier’s Law — flat wall and cylindrical pipe
Results
Heat Transfer Rate Q
—
W
Thermal Resistance R
—
K/W
Heat Flux q
—
W/m²
Q (kW)
—
kW
Formulas
Flat wall: Q = k × A × ΔT / L | R = L/(kA)
Cylinder: Q = 2πkLΔT / ln(r₂/r₁) | R = ln(r₂/r₁)/(2πkL)
📝 Worked Example
Carbon steel wall 100 mm thick, 10 m², T₁=200°C, T₂=25°C.
Q = 50 × 10 × 175 / 0.1 = 875,000 W = 875 kW
Q = 875 kW | R = 0.0002 K/W | q = 87,500 W/m²