Several design variations have been used for chilled water systems, as listed in Table 1, but all work on the same principle: storing cool energy based on the heat capacity of water (1 Btu/ lb-°F). Stratified tanks are by far the most common design. . ceeding energy code minimum requirements. A comprehensive approach to system design can minimize the power draw of the entire system are inherently easier to control for highest eficiency, lower first costs and lower energy costs. TES tanks take advantage of off‐peak energy rates by cooling water during these hours (usually overnight) and using it during high‐rate hours (usually daytime). This allows the generation of energy at a time different from its use to optimize the varying cost of energy based. . Thermal energy storage (TES) technologies heat or cool a storage medium and, when needed, deliver the stored thermal energy to meet heating or cooling needs. Thermal energy storage has been around for decades and continues to prove an efficient and economical storage method.
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