Calculateur de Conductivité Thermique Gratuit

Calculez le flux thermique à travers un matériau. Déterminez la conductivité thermique et le taux de transfert de chaleur.

Thermal Conductivity (k)

W/(m·K)

Surface

m²

Temperature Difference

°C

Material Thickness

Heat Flow Rate

80.00 W

Heat Flow Rate vs Thermal Conductivity (k)

Formule

Fourier's law describes the rate of heat conduction through a material.

Q/t = k * A * DeltaT / d

where k is thermal conductivity, A is area, DeltaT is temperature difference, and d is thickness. Lower k means better insulation.

Heat loss through a 10 m² wall, 10 cm fiberglass insulation (k=0.04), 20°C temperature difference.

What materials have the highest thermal conductivity?

Silver (429), copper (401), and aluminum (237) in W/(m·K). Metals are generally excellent conductors.

What makes a good insulator?

Materials with very low thermal conductivity: fiberglass (~0.04), styrofoam (~0.03), aerogel (~0.015), and still air (~0.025 W/(m·K)).

How does wall thickness affect heat loss?

Heat loss is inversely proportional to thickness. Doubling the insulation thickness halves the heat loss rate.

Apprendre

Calculate thermal resistance of materials.

Calculate heat energy transferred.

Calculate radiative heat transfer.