Views: 0 Author: Site Editor Publish Time: 2026-06-26 Origin: Site
Adapted to two mainstream cooling methods for 800G/1.6T/3.2T high-power optical modules: liquid cooling with cold plates and fluorinated liquid immersion. Iterates in six key areas: high density, low PUE, refrigerant compatibility, intelligent temperature control, standardization, and long lifespan with corrosion resistance:
I. Extremely efficient and low-resistance flow channel plates to match the dynamic heat fluctuations of optical modules.
New composite corrugated plates.
Optimized herringbone corrugation + micro-turbulence structure enhances turbulence intensity, reducing the heat exchange difference between hot and cold ends to 0.5~1℃, ensuring optical module temperature fluctuations ≤±0.5℃, eliminating wavelength drift and increased bit error rate;
Simultaneously reducing flow channel pressure drop, decreasing CDU water pump power consumption, and lowering the PUE of the data center to 1.05~1.15, meeting the stringent energy efficiency requirements of domestic IDCs.
Dual-path differentiated flow channel design:
Cold plate type optical module liquid cooling (ethylene glycol deionized water): Narrow flow channel, high heat transfer density standard brazed plate heat exchanger;
Immersed in fluorinated liquid with CDU plate heat exchanger: Widened flow channel, low flow resistance plate, suitable for high viscosity fluorinated liquid media, avoiding overheating of 3.2T optical modules due to insufficient flow.
Multi-plate heat exchanger parallel modular expansion:
Single rack 200kW ultra-high density computing cluster uses multiple small plate heat exchangers in parallel. Single-plate failure can be isolated for maintenance without entire rack downtime, suitable for long-term continuous operation of AI switches with fully configured high-power optical modules.
II. Material and Welding Process Upgrades to Solve the Pain Points of Fluorinated Liquid and Ethylene Glycol Corrosion and Leakage
Substrate Layering Upgrade Roadmap
Existing Cold Plate Compartment: 304 Stainless Steel Brazed Plates, Compatible with Ethylene Glycol Aqueous Solutions;
Fluorinated Liquid/CPO Immersed Optical Engine Compartment: 316L and Titanium Alloy Composite Plates, Resistant to Long-Term Fluorinated Liquid Immersion Corrosion, Preventing Ion Emissions and Blockage of Micro-Cold Plate Channels in Optical Modules;
High-End Supercomputing: Stainless Steel + Graphene Nanocoated Plates, Improving Heat Transfer Coefficient, Preventing Scaling, and Reducing Media Adhesion.
Welding Process Replacement of Traditional Copper Brazing
Vacuum laser welding and all-stainless steel hard welding are gradually becoming widespread, increasing pressure resistance to 1.6~2.5MPa, suitable for high-lift CDU long pipeline transportation; eliminating the risk of copper brazing layer corrosion and leakage by fluorinated liquid, suitable for 24/7 uninterrupted operation of optical modules.
Specialized Sealing Components for Resistant Media
Equipped with fluororubber and perfluorinated gaskets, compatible with two mainstream secondary refrigerants: ethylene glycol and fluorinated liquids. No swelling or leakage during long-term use.
III. Miniaturization and Integration: Rack-Mounted CDU Micro-Panel Heat Exchangers Become Mainstream
Miniature high-density brazed plate heat exchangers reduce volume by over 40% for the same heat exchange capacity. Suitable for rack-mounted distributed CDUs (independent CDUs in a single cabinet), eliminating reliance on centralized large CDUs; suitable for the limited space of TOR/Spine switch cabinets, and compatible with rack-mounted optical module cooling.
Integrated Water System for Plate Heat Exchanger and CDU
Eliminates external flange piping; the plate heat exchanger's water inlet is directly integrated into the CDU's water distribution and collection chamber, reducing leakage points at joints, lowering maintenance risks in the data center, and preventing leakage from burning out optical modules.
Lightweight Thin Plates
Ultra-thin precision stamped plates reduce overall weight, facilitating internal cabinet assembly, disassembly, and maintenance.
IV. Universal and Compatible Design for Both Hot and Cold Circuits: One plate heat exchanger adapts to both cold plate and immersion liquid cooling solutions for optical modules.
Industry-wide trend: The same CDU plate heat exchanger can be switched between cold plate and immersion type data center retrofits, reducing customer inventory and customization costs.
Bidirectional Adjustable Water Circuit: Compatible with low-flow glycol cold plate circuits and high-flow fluorinated liquid immersion circuits;
Wide Range of Flow Rate and Differential Pressure: 5~60m³/h flow rate adaptive;
Standardized Interface: Unified ODCC/OCP liquid cooling water circuit quick-connect specifications, compatible with different brands of switches, optical module cold plates, and immersion tank piping.
V. Integrated Sensing Heat Exchange + AI Dynamic Temperature Control: Precisely Matches Dynamic Power Consumption of Optical Modules. The plate heat exchanger has a built-in micro-sensor array. Temperature, differential pressure, and flow sensors are integrated at the plate inlet and outlet to collect the secondary side return water temperature in real time (corresponding to the overall heating of the optical module) and link it to the CDU electronic control system.
AI-Adaptive Load Adjustment: Dynamically adjusts primary-side chilled water flow based on the real-time online number of optical modules and service load. Reduces flow during off-peak hours for energy saving, and increases heat exchange power when fully loaded with 1.6T/3.2T optical modules, balancing stable heat dissipation and low energy consumption.
Predictive Maintenance: Predicts scaling and blockage in heat exchangers using pressure differential and temperature curves, providing early warnings to prevent mass overheating and frequency throttling of optical modules, significantly reducing data center downtime losses.
VI. Adaptation to Next-Generation Technologies: Iteration of Dedicated Heat Exchangers for Two-Phase Liquid Cooling and CPO Co-packaged Optical Engines
Dedicated High-Pressure Heat Exchangers for Two-Phase Phase Change Liquid Cooling: Develops special brazed heat exchangers resistant to pressure fluctuations for long-term two-phase immersion/two-phase cold plate optical module heat dissipation, adapting to changes in refrigerant evaporation and condensation pressure, increasing heat exchange capacity by more than 2 times compared to single-phase solutions.
CPO Co-packaged Optical Engine Ultra-High Power Plate Heat Exchanger
CPO immersion racks achieve a single-rack power consumption exceeding 200kW, featuring a high-capacity, wide-channel, corrosion-resistant plate heat exchanger adapted for high-density integrated optical engines with full-area constant temperature cooling.
Low GWP Environmentally Friendly Refrigerant Compatibility
Panel and sealing structures are compatible with next-generation low global warming potential refrigerants, aligning with green and low-carbon data center policies.
