TP77-13 Sidestream Softening as a Means...Reed, Klen & JohnsonThe use of water as a heat transfer medium has historically been practiced in a wide variety of industrial applications. In the past, the relative ease with which large amounts of good quality water could be obtained favored the installation and general acceptance of "once through" cooling water designs. The enactment of strict water pollution control legislation, along with a shortage of water for cooling purposes in many geographic areas, has