Fourier's Law of heat conduction:
Derive the unit of k from Fourier's law of conduction equation:
Q = kA(delta T)/(delta x)
where:
Q = conduction heat transfer rate (watts)
k = thermal conductivity (unit-?)
A = cross-sectional area (m^2)
delta T = change in temperature (Celsius or Kelvin)
delta x = distance (meters)