  The energy dissipation and heat flows associated with the particle current in
a system with a molecular junction are considered. In this connection, we
determine the effective temperature of the molecular oscillator that is
compatible with the existence of a steady state. The calculations based on the
Kadanov-Baym nonequilibrium Green function formalism are carried out supposing
a strong coupling of the dot electrons with the molecular vibrations.
Accordingly, the representation given by the Lang-Firsov polaron transformation
is used and the dependence of results on the electron-phonon interaction
strength is investigated.
