Rack-mounted / air-to-liquid
Rack-mounted Air-to-Liquid CDU
The rack-mounted air-to-liquid CDU is a high-density liquid cooling server heat dissipation solution developed specifically for the data center industry, addressing the sensitivity of server CPU and GPU heat generation to ambient temperature. It consists of water pumps, heat exchangers, fans, filters, expansion tanks and control modules. The built-in circulating pump provides power for water circulation, carrying away heat from liquid-cooled servers, which is then dissipated into the environment by the fans.
Discuss this productFeatures & technical specifications1 specification table
Product features
- Standard 10U rack-mount chassis
- All stainless steel piping
- High-efficiency centrifugal pumps with automatic flow adjustment
- Redundant pump drivers with 1+1 cold standby
- Active anti-condensation function
- 4.3-inch LCD control screen
- Built-in leakage detection and automatic liquid replenishment
- Constant differential-pressure or constant-flow output
- Integrated monitoring
- Dual power supply
- Modbus RTU and TCP/IP support
| MODEL | CDU-35LJ | CDU-80LJ | CDU-100LJ |
|---|---|---|---|
| Heat exchange capacity (kW) | 35 | 80 | 100 |
| Primary supply/return fluid temperature (°C) | 35/45 | 35/45 | 35/45 |
| Primary working fluid | Softened water | Softened water | Softened water |
| Secondary supply/return fluid temperature (°C) | 40/50 | 40/50 | 40/50 |
| Secondary working fluid | PG25 | PG25 | PG25 |
| Secondary side filtration precision | 100μm | 100μm | 100μm |
| Primary side connection type | 1.5" tri-clamp | 1.5" tri-clamp | 1.5" tri-clamp |
| Secondary side connection type | 1.5" tri-clamp | 1.5" tri-clamp | 1.5" tri-clamp |
| Circulating pump quantity | Dual pumps | Dual pumps | Dual pumps |
| Dimensions W × L × H (mm) | 481*950*171.5 | 481*851*174 | 481*851*174 |
| Power supply specifications | 220VAC | 48VDC | 48VDC |
Applications
High-density data centers · Retrofit and new-build data centers · Intelligent computing centers · Large-scale computer rooms · AI training clusters · High-power industrial equipment cooling · Scientific research laboratories
Reference conditions & selection notes
- Slide 4 labels the product Air-to-Liquid, but its CDU-35LJ / CDU-80LJ / CDU-100LJ reference table specifies both primary and secondary liquid circuits, while the description specifies fan heat rejection. These values are transcribed as reference data and are not verified air-to-liquid product ratings. Confirm the model, thermal interface and dimensions before selection.
- The air-to-liquid description specifies a standard 10U chassis, a 4.3-inch LCD and fan heat rejection. These differ from the 171.5–174 mm heights in the reference table.
- The source table labels dimensions W × L × H; that dimension order is retained. PG25 is retained as the source fluid designation.
Liquid Cooling Manual, p. 4