Objective/Method/Outcome
Objective: Determines if condenser water supply temperature control is in error
Method: Compares the water supply temperature to the water supply temperature setpoint. If the difference exceeds the threshold, for more than the acceptable time, the cost per hour of the error is calculated.
Outcome: Generates an insight and calculates the potential savings.
Applicable System
CCWS
Description
Determine the error severity of a condenser water temperature control system in degree*hours.
This rule is part of the CopperTree Standard rule-set.
Calculate the severity metric based on the absolute difference between the water temperature and the water temperature setpoint deadband while the water temperature is outside of the deadband during scheduled hours.
Message
The condenser water supply temperature has deviated from the setpoint for more than 10 degree*hours per week while the system is enabled. Review controller tuning parameters.
Rule Template
Insight Type: Integrity KPI
Trigger Type: Active High
Default Priority
Medium
Logic
Inputs
| Input | Unit | Tags | Description |
|---|---|---|---|
| Condenser Water Supply Temperature | °C/ °F | Chiller Condenser Water Supply Temperature | The recorded water temperature |
| Condenser Water Supply Temperature Setpoint | °C/ °F | Chiller Condenser Water Supply Temperature Setpoint | The water temperature setpoint |
| Status | Chilled Water System Enabled, Chiller Status | To detect if CCWS is operational | |
| Const. – Temperature Threshold | °C/ °F | To minimum temperature deviation from setpoint beyond which an insight would be generated | |
| Const. – Acceptable Weekly Threshold | °*hr | ||
| Days of operation annually | Days per year the system is operational | ||
| Cost per Degree*Hour | $ |
Notes
CTL generated:
CWST Severity KPI
