A new ceiling tile installed in Wellington City Hall could reduce the cost of cooling. The tile, called passive thermal energy storage ceiling tile, is best described as a sponge, said Barry Dicker, president of Decent Energy Inc. and project leader. The ceiling tile absorbs heat. Then, after temperatures drop, the tiles release the stored heat. The new tile was placed above the existing tile and under the fiberglass insulation already in City Hall.
Source: Wichita Eagle
