Home

System Tour
  Building Characteristics
 Chillers
 Air Handlers
 Cooling Towers
 Pumps

Sensors
 Temperature
 Building Power
 Cooling Plant Power
 Water Flow
 Pressure

Hardware/Software
 Data Acquisition System
 Server/Networking
 Visualization Software
 Remote Web Access

IMDS Information
 Physical Points List
 Calculated Points List
 Point Name Reference
 Infrastructure Schematics
 Sample Plots




Go to:
 IMDS Project
 CBS Group
 BT Department
 EET Division
 LBNL Main

Chillers


Two 225-ton capacity centrifugal chillers.
Efficiency rated at 0.8kW/ton at full load.
Installed in 1965.

Sensors
Power
Flow
Temperature
Differential Pressure

Points Measured
Power (kW)
Physical Points (2) Chiller 1 Power, Chiller 2 Power
Calculated Points (1) Total Power
Flow (gpm)
Physical Points (5) Ch 1 Evaporator and Condenser, Ch 2 Condenser, Chilled Water Main, Second Floor Coil
Calculated Points (2) Chilled Water Total
Ch 2 Evaporator
Temperature (deg F)
Physical Points (8) Ch 1 Chilled Water Supply and Return, Ch 2 Chilled Water Supply and Return, Ch 1 Condenser Supply and Return, Ch 2 Condenser Supply & Return
Calculated Points(4) *Ch 1 Chilled Water Temperature Difference
*Ch 2 Chilled Water Temperature Difference
*Ch 1 Condenser Water Temperature Difference
*Ch 2 Condenser Water Temperature Difference
Differential Pressure  (psid)
Physical Points (4) Ch 1 Evaporator, Ch 2 Evaporator, Ch 1 Condenser, Ch 2 Condenser
Load (Tons)
Calculated Points (5) Ch 1 Load, Ch 2 Load, Ch 1 Condenser Load, Ch 2 Condenser Load, Total Tons
Efficiency (kW/ton)
Calculated Points (4) Ch 1 Evaporator Efficiency, Ch 2 Evaporator Efficiency, *Ch 1 Condenser Efficiency, *Ch 2 Condenser Efficiency


 Total Points: 19 physical; 16 calculated (6 not trended)

* Not trended