  A simple vibrational model of heat transfer in two-dimensional (2D) fluids
relates the heat conductivity coefficient to the longitudinal and transverse
sound velocities, specific heat, and the mean interatomic separation. This
model is demonstrated not to contradict the available experimental and
numerical data on heat transfer in 2D complex plasma layers. Additionally, the
heat conductivity coefficient of a 2D one-component plasma with a logarithmic
interaction is evaluated.
