def thermalConductivity(T, tCP):
    """
    thermalConductivity(T, tCP)

    thermalConductivity (W/m/K) = A + B*T + C*T^2
    
    Parameters
      T, temperature in Kelvin
      tCP, A=tCP[0], B=tCP[1], C=tCP[2]
      A, B, and C are regression coefficients  

    Returns
      thermal conductivity in W/m/K at T
    """
    return tCP[0] + tCP[1]*T + tCP[2]*T**2