Improving Thermal Performance of Chilled Water Storage Tank-A Numerical Study

This study investigated the effect of geometrical parameters on the ability of a storage to maintain the stratification by preventing distortion of thermocline during charging and discharging cycles.Existing methods and empirical relations have been applied to design a chilled water storage tank for a hypothetical case of emergency cooling requirement ofa data science center for 12 minutes. The effect of diffuser diameter, inlet height and Reynolds number have been studied. The idea of using perforated dampers to damp the turbulenceoccurring at high Reynolds number is introduced and empirical relations for the dampers are suggested. The validation of storage tank design with perforated dampers is carried out at various mass flow rates in the range of Reynolds number 792 to 6072 for storage tank of differentdiameters.