In Rack CDU for Data Center Liquid Cooling Systems
In Rack CDU for AI Data Centers | Intelligent Liquid Cooling Distribution Unit
High Efficiency In Rack CDU for AI, HPC and High Density Data Centers
As AI computing, GPU clusters, and high-density servers continue to increase power density, traditional air cooling is no longer sufficient. The In Rack CDU (Cooling Distribution Unit) is designed to deliver precise coolant flow, stable pressure, and intelligent temperature control directly inside the server rack.
Our In Rack CDU integrates pumps, plate heat exchangers, intelligent controllers, sensors, and safety protection into a compact 19-inch rack cabinet, providing reliable secondary coolant circulation for Direct-to-Chip Liquid Cooling and Rear Door Heat Exchanger (RDHx) applications.
Whether deployed in AI data centers, HPC clusters, cloud computing facilities, or enterprise server rooms, the system ensures maximum cooling efficiency while minimizing energy consumption and operating costs.
Why Choose Our In Rack CDU?
High Cooling Performance
Supports high-density server cooling up to 54 kW per rack while maintaining stable outlet temperature and flow.
Intelligent PLC Control
Integrated PLC controller with HMI touchscreen enables automatic operation, alarm management, and real-time monitoring.
Compact Rack Installation
Standard 19-inch rack cabinet design allows seamless deployment inside existing data center infrastructure.
Stable Flow Control
High-efficiency circulation pump ensures continuous coolant delivery with precise hydraulic balancing.
Energy Efficient
Plate heat exchanger design reduces cooling energy consumption while improving heat transfer efficiency.
Easy Maintenance
Modular internal layout simplifies maintenance, replacement, and future system upgrades.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | In Rack CDU |
| Cooling Capacity | 54 kW |
| Rated Flow Rate | 90 L/min |
| Maximum Working Pressure | ≤0.3 MPa |
| Maximum Operating Temperature | ≤40°C |
| Cooling Method | Liquid-to-Liquid Heat Exchange |
| Pump Type | Variable Speed Circulation Pump |
| Heat Exchanger | Brazed Plate Heat Exchanger |
| Pipe Connection | DN32 |
| Power Supply | 3 Phase, 230 VAC, 50/60 Hz |
| Rated Power | 0.9 kW |
| Rated Current | 1.8 A |
| Control System | PLC + HMI Touchscreen |
| Cabinet Type | 19" Rack Cabinet |
| Installation | Indoor Data Center |
| Weight | Approx. 60 kg |
Standard Components
| Component | Description |
|---|---|
| Rack Cabinet | Standard 19-inch Rack |
| Circulation Pump | High-efficiency Variable Speed Pump |
| Plate Heat Exchanger | Stainless Steel Brazed Plate Type |
| Temperature Sensors | Multiple PT100 Temperature Sensors |
| Pressure Sensors | High Accuracy Pressure Monitoring |
| Flow Sensor | Real-time Coolant Flow Detection |
| Automatic Fill Pump | Automatic Water Replenishment |
| Control Valve | Intelligent Flow Regulation |
| PLC Controller | Automatic Operation & Alarm |
| Touch Screen | Human Machine Interface (HMI) |
Key Features
Intelligent Monitoring
The CDU continuously monitors:
- Coolant Temperature
- Supply & Return Pressure
- Flow Rate
- Pump Status
- System Alarms
- Heat Exchange Performance
Real-time monitoring helps improve reliability and reduces unexpected downtime.
Reliable Cooling for AI Servers
Designed specifically for
- NVIDIA GPU Servers
- AI Training Clusters
- HPC Computing
- Enterprise Data Centers
- Cloud Computing Infrastructure
- Edge Data Centers
Compatible with:
- Direct-to-Chip Liquid Cooling
- Cold Plate Cooling
- Rear Door Heat Exchanger
- Liquid Cooling Manifold Systems
Energy Saving Design
Compared with conventional air cooling systems, the In Rack CDU offers:
- Higher cooling efficiency
- Lower PUE
- Reduced fan energy consumption
- Stable coolant temperature
- Improved server reliability
Ideal for next-generation AI infrastructure.
Optional Configurations
Available options include:
- Redundant Dual Pumps
- Dual Power Supply
- EC Variable Speed Pumps
- Modbus RTU / TCP Communication
- BACnet Integration
- Leak Detection System
- Water Quality Monitoring
- Automatic Pressure Control
- Remote Monitoring via Ethernet
Applications
The In Rack CDU is widely used in:
- AI Data Centers
- GPU Computing Centers
- Cloud Computing Facilities
- HPC Clusters
- Financial Data Centers
- Internet Service Providers
- Telecom Data Centers
- Government Computing Centers
- Research Institutes
Benefits
✔ High Cooling Capacity
✔ Intelligent PLC Control
✔ Compact Rack Design
✔ Easy Installation
✔ Low Operating Cost
✔ High Reliability
✔ Energy Efficient
✔ Low Maintenance
✔ OEM & ODM Supported
Frequently Asked Questions
What is an In Rack CDU?
An In Rack CDU (Cooling Distribution Unit) is a liquid cooling system installed inside a standard server rack. It transfers heat between the facility water loop and the secondary coolant loop while supplying temperature-controlled coolant to liquid-cooled servers.
What cooling technologies are supported?
The system supports Direct-to-Chip Cooling, Cold Plate Cooling, Rear Door Heat Exchangers (RDHx), and other liquid cooling solutions for high-density IT equipment.
Can the CDU be customized?
Yes. We provide customized cooling capacity, pump redundancy, communication protocols, power configurations, cabinet dimensions, and control software to meet project-specific requirements.
Request a Quote
Looking for a reliable In Rack CDU manufacturer for your AI or high-density data center project?
Our engineering team can provide:
- Custom cooling capacity design
- OEM & ODM manufacturing
- Project consultation
- Technical drawings
- Fast quotation
- Global delivery
- Professional after-sales support
Contact us today to get a customized In Rack CDU solution for your liquid cooling infrastructure.
