This image shows a CDU (Coolant Distribution Unit) Metrics & Control System diagram illustrating the overall structure. The system can be organized as follows:
System Structure
Upper Section: CDU Structure
- First Loop: CPU with Coolant Distribution Unit
- Second Main Loop: Row Manifold and Rack Manifold configuration
- Process Chill Water Supply/Return: Process chilled water circulation system
Lower Section: Data Collection & Control Devices
- Control Devices:
- Pump (Pump RPM, Rate of max speed)
- Valve (Valve Open %)
- Sensor Configuration:
- Temperature & Pressure Sensors on manifolds
- Supply System:
- Rack Water Supply/Return
Main Control Methods
1. Fixed Pressure Control (Fixed Pressure Drop)
- Primary Method: Maintaining fixed pressure drop between rack supply-return
- Alternatives: Fixed flow rate, fixed supply temperature, fixed return temperature, fixed speed control
2. Approach Temperature Control
- Primary Method: Maintaining constant approach temperature
- Alternatives: Fixed open, fixed secondary supply temperature control
Summary
This CDU system provides precise cooling control for data centers through dual management of pressure and temperature. The system integrates sensor feedback from manifolds with pump and valve control to maintain optimal cooling conditions across server racks.
#CDU #CoolantDistribution #DataCenterCooling #TemperatureControl #PressureControl #ThermalManagement
with Claude
Lechuck Park 