Thermal Conductivity Calculator

Calculate Heat Transfer Parameters

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Heat Transfer Rate Calculator

Calculate heat transfer rate using Fourier's law of heat conduction.

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Thermal Resistance Calculator

Calculate thermal resistance and composite wall properties.

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Understanding Thermal Conductivity

Basic Principles

Key concepts include:

  • Fourier's law
  • Heat flux
  • Temperature gradient
  • Steady-state conduction
  • Material properties

Applications

Common uses:

  • Building insulation
  • Heat exchangers
  • Electronic cooling
  • Material science
  • Process engineering

Advanced Concepts

Important considerations:

  • Transient conduction
  • Thermal contact resistance
  • Anisotropic materials
  • Phase changes
  • Composite systems

Material Properties

Factors affecting conductivity:

  • Temperature dependence
  • Material structure
  • Porosity
  • Moisture content
  • Phase composition

Essential Heat Transfer Formulas

Fourier's Law

q = -kA(dT/dx)

Q = kA(T1-T2)/L

Thermal Resistance

R = L/(kA)

Rtotal = R1 + R2 + ...

Heat Flux

q" = Q/A

q" = k(dT/dx)