Modular Coolant Distribution Units for Low-Loss Data Rack Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High power computing systems generate significant heat, requiring efficient liquid cooling systems that maintain optimal operating conditions while minimizing energy waste due to pressure drops and friction in connectors.
Innovation Solution
A modular coolant distribution unit (CDU) with independent facility and rack cooling loops, featuring modular CDUs (mCDUs) for enhanced control and redundancy, allowing for independent operation and adjustment of fluid flow to optimize heat exchange and maintain system functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid cooling systems are used to remove heat from high power computing systems, then thermal management effectiveness is improved, but pressure drops and friction in connectors increase energy consumption
Solution Approach 1:
The cooling system is divided into modular coolant distribution units (mCDUs) that can be independently configured and optimized. Each mCDU serves specific rack groups, allowing localized optimization of fluid flow paths to minimize pressure drops while maintaining effective heat removal from high power computing systems.
Solution Approach 2:
The system incorporates dynamically adjustable flow control valves within each mCDU that can be programmed to optimize fluid flow rates based on real-time thermal loads and pressure conditions. This dynamic adjustment minimizes energy consumption by matching cooling capacity to actual demand while maintaining optimal pressure levels.
2Adaptability or versatility
If modular coolant distribution units with independent control are implemented, then control precision and system flexibility are improved, but device complexity increases
Solution Approach 1:
The CDU is segmented into multiple independent mCDU modules, each capable of autonomous operation with its own flow control valve and heat exchanger. This modular architecture provides system flexibility and adaptability while managing complexity through standardized, replaceable units rather than a single complex system.
Solution Approach 2:
Each mCDU module is designed as a universal unit that can serve multiple functions: cooling different rack configurations, operating in various flow rates, and providing redundancy. This multi-functionality reduces overall system complexity by using standardized components rather than specialized parts for each function.
3Measurement precision
If facility cooling fluid and rack cooling fluid are isolated in separate loops, then thermal management precision is improved, but device complexity increases
Solution Approach 1:
The cooling system is divided into separate facility and rack cooling loops within each mCDU, allowing independent temperature control and optimization for each thermal management zone. This segmentation enables precise thermal management while containing complexity within modular boundaries.
Solution Approach 2:
A heat exchanger acts as an intermediary between the facility cooling loop and the rack cooling loop, enabling thermal transfer while maintaining fluid isolation. This allows precise thermal management of rack cooling fluid without contaminating the facility loop, while the heat exchanger handles the complexity of thermal exchange.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively manages thermal loads by reducing pressure drops and energy consumption, ensuring reliable cooling with redundancy and flexibility for system reconfiguration and maintenance.
Implementation Method 1
a heat exchanger. The heat exchanger configured to transfer heat from the rack cooling fluid flowing through a portion of the second rack cooling loop within the mCDU
Data Source
AI summary
The technology is directed to a modular liquid-cooling information technology (“IT”) system and method for cooling and thermal management of IT equipment in a data center. An improved coolant distribution unit (CDU) provides cooling fluid to data racks in a data center and includes a plurality of modular CDUs (“mCDUs”). The mCDUs provide for modularity of the liquid-cooling system and greater control over fluid flow through the CDU and to the data racks. Additionally, methods are disclosed for controlling components within each mCDU to allow for continual modifications to fluid flow through the system to provide optimal cooling of data racks.