Centennial Thermal Energy Storage Model

Project Name	Centennial Thermal Energy Storage Model	Last entry date	5-Apr
Maintained by
ID	Requirement Description	Reference	WBS delierables	Remarks

The model shall determine when and at what amounts chilled water should be discharged from the tank
The model should be described in such a way that it could be utilized by the plant automation system to dispatch the stored energy appropriately.

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Project’s sponsor Algorithm/procedure

CHW Demand forecast shall include provisions for future campus CHW load growth Project’s sponsor Demand forecast model

The model should take into account the weather forecast and typical chilled water needs. Project’s sponsor Demand forecast model

Demand forecast must factor in building occupancies during workdays and holidays Literature Demand forecast model ^{exact figure}

needs an update

TES tank charging: The water temperature should be lowered in intervals not to exceed (12F) differential temperature within a two-hour duration.
Prior to draining the tank, check the exterior groundwater elevation. The tank foundation has not been designed for uplift pressures.
The TES tank must be drained through the lower diffuser piping (CW line) until there is minimal water left on the tank floor less than (2 ft).
The TES tank is not under pressure and some of the water will evaporate into the atmosphere; therefore, requiring makeup water added to the system
The water level in the tank should be maintained at a minimum of (6″) above the upper diffuser piping

DN Tanks O&M record Tank model

DN Tanks O&M record Tank model exact figure needs an update

DN Tanks O&M record Tank model

Net storage capacity must account for tank’s freeboard, heel and thermocline volumes ASHARE Handbook-HVAC applications Tank model