  Deconfined regions in relativistic heavy ion collisions are limited to small
volumes surrounded by a confined exterior. Using the geometry of a double
layered torus, we keep an outside temperature slightly lower than the inside
temperature, so that both regions are in the SU(3) scaling region. Deconfined
volume sizes are chosen to be in a range typical for such volumes created at
the BNL RHIC. Even with small temperature differences a dependence of the
(pseudo) deconfining temperature on a colder surrounding temperature is clearly
visible. For temporal lattice sizes Ntau=4, 6 and 8 we find consistency with
SU(3) scaling behavior for the measured transition temperature signals.
