ice energy storage tank window in Vienna

Dimensions: 1.3 x 0.7 m
Type: Liner Pool

Another Ice storage tank window from Hydrosight and this time, the surface of the tank is covered with liner.

Construction of an ice energy storage tank

An ice storage tank consists of a cistern. The cistern itself is usually made of concrete. Inside the cistern are large spirals of pipes in which a frost-proof liquid (brine) circulates. These spirals are divided into a withdrawal heat exchanger and a regeneration heat exchanger. Once all the pipes and outlets and inlets have been installed, the cistern is filled with water. This then serves as an energy supplier.
Source: Vissmann