Influences of water temperature and connection mode of water chillers on energy consumption of chilled water storage systems

Compares and analyses with a project design example the energy consumption and operating costs of a chilled water storage system at different chilled water temperatures as well as in series or parallel connection modes of water chillers. The results show that the annual power consumption of parallel connection of water chillers is more than that of serial connection by 4.6%; when the supply/return chilled water temperature is set at 6 ℃/14 ℃, the annual power consumption and power rate are less than those in the 4 ℃/14 ℃ condition, and the annual power consumption is 7.4% less.