How do buffer tanks improve the performance of a chilled water system?
Having as much water volume as possible increases the thermal mass and flywheel effect within the system. Thermal mass can store and even out fluctuations in temperature. Buildings with a low thermal mass are very responsive to changes in internal temperature. They are often subject to wide variances. Water has a very high thermal capacity. Meeting or exceeding minimum system water volume recommendations will result in satisfactory water temperature control. Some small tonnage chillers have short water loops with less water. Adding buffer tanks to the system will increase the water volume, ensuring stable water temperature control and increasing reliability by reducing compressor cycling.
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