Recommends practical methods of achieving high chilled-water temperature differentials in variable-flow hydronic cooling systems. This will achieve more cooling per unit volume of chilled water distributed and pressure losses and pumping energy will decline considerably. In addition, water chiller capacities will no longer be limited by maximum evaporator flow rates and chilled water storage tanks will store many more ton-hours (megajoules) of cooling.

KEYWORDS: year 1996, Chilled water supply, temperature difference