The owner continues to connect new buildings to the CCWP.
As the efficiency of the CCWP was being evaluated, a need existed to determine if the site was experiencing low [DELTA]T syndrome.
Example loads and flows based on the site's plant system size will be used in this section to help explain the impact of low [DELTA]T on the primary/secondary system at the CCWP.
This is not what really happens at the CCWP, but it is what would happen if another chiller were not started.
Thus, starting the next chiller is how the CCWP deals with the effect of low [DELTA]T syndrome at this primary/secondary chiller plant.
Is there a controls logic change that could be implemented at the CCWP that would enable the chillers to control the secondary temperature setpoint and load to 100% despite the impact of low [DELTA]T syndrome?
4% is a true improvement in the starting sequence for the chillers at this CCWP.
As previously stated, the site added a Loop B to the CCWP in the summer of 2005, which means that even with an increased load, the new code operated with fewer chillers.
Starting a chiller at the CCWP requires a 75 hp (56 kW) primary pump and 100 hp (74.
Using the example figures, which are not the real system but represent generally what is happening for this CCWP, the following simplified, single-point, winter season evaluation is presented:
During the summer of 2005, Loop B was connected to the CCWP and placed into operation, which means that a full year of operation of the increased site load is not in the pre-change energy use.