  We analyze thermodynamics of water samples confined in nanopores and prove
that although the freezing temperature can be dramatically lower, the
suppression of the ice nucleation leading to the freezing temperature
depression is a truly macroscopic effect rather than a consequence of
microscopic interactions. The freezing transition itself is a truly collective
phenomenon described by a macroscopic order parameter (the nearly homogeneous
density of the liquid within the pore away from the pores wall) exactly in the
same way as in the bulk liquid. The thermodynamics properties of the confined
and the bulk liquid can be described by macroscopic thermodynamics and be
readily related to each other simply by proper inclusion of the additional
Laplace pressure exerted by the solid-liquid boundary.
