ABSTRACT
The modules, tiles of about 12 mm (O·S in) depth, are applied to the ceilings or upper walls of rooms over various areas depending on the heating or cooling requirements of the particular room. To obtain a large thermal storage capacity, about half the weight of each tile is composed of materials which melt near room temperature with high latent heats of melting (50-60% of ice). The heat storage capacity is then equivalent to the specific heat stored in about 100 mm (4 in) of concrete cycled through urc, but the fluctuation in room temperature required for storage in the latent heat tiles is much smaller and can be kept within the comfort range (about 5°C), provided heat transfer to the tiles is sufficiently rapid at small temperature differences.
