Chilled Water
From Captain of Industry Wiki
Chilled Water is a crafted resource obtained by passing Water through a Water Chiller. Its sole purpose is cooling of Data Centers, which consume the Chilled Water at a rate of 0.5 / 60 per Basic Rack and output Water at the same rate. Currently, one Water Chiller provided with 6.0 extra Water per month will exactly match a full Data Center.
Much like Steam Hi, Chilled Water can NOT be stored in a Fluid Storage [II • III • IV]. Currently the best way to store Chilled Water would be in long pipe sections and pipe junctions.