*3.3.2 Dynamic chilled water balancing*

Chilled water balancing is achieved by utilizing the micro-zones' weighted average return air temperature. When the weighted return air temperature falls above the set point, the Al algorithm detects that more cooling is required in the space. However, the steps for air balancing and AHUs speed adjustment are completed to accommodate the cooling requirement. Therefore, the controlled valve will be modulated to a wider position to provide more chilled water to maintain the temperature in micro-zones within the thermal comfort range defined by ASHRAE standard 55 [12]. Therefore, the differential temperature of the chilled water is maintained at the optimal range, while the chiller water pump's speed is adjusted to provide the required cooling in the space, resulting in energy savings without comprom*isi*ng the thermal comfort of the occupants in the space. The sequence of activating the opening of the chilled water modulating valve is shown in **Figure 14**.
