Interchangeable Air-Liquid Cooling for High-Density Data Centers
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Solution Overview
Problem
Existing cooling technologies struggle to address the increased processing power demands and resulting high densities in data centers, particularly for GPU and TPU clusters, requiring scalable and flexible cooling solutions that can seamlessly integrate with both air and liquid cooling systems.
Innovation Solution
A scalable and universal cooling architecture that integrates air and liquid cooling systems, allowing for seamless transitions between cooling modalities, including a coolant distribution unit (CDU) that supports both air-cooled and liquid-cooled servers, and a modular approach to liquid cooling, supporting vertical and horizontal density increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If liquid cooling systems are deployed to address high density processing demands, then cooling efficiency is improved, but device complexity and infrastructure requirements increase
Solution Approach 1:
The cooling system is designed to support multiple cooling modalities (air cooling and liquid cooling) within the same infrastructure. The CDU can operate in either mode, and the system can accommodate both air-cooled and liquid-cooled server racks simultaneously, providing universal cooling capability that adapts to different density requirements without requiring separate infrastructure systems.
2Productivity
If cooling infrastructure is upgraded to support higher densities, then processing power capacity is improved, but operational disruption and installation costs increase
Solution Approach 1:
The cooling system enables dynamic transitions between air cooling and liquid cooling modes based on the thermal density requirements of deployed servers. This dynamic adaptability allows the infrastructure to evolve with processing demands without requiring complete reconfiguration, minimizing operational disruption during upgrades.
Solution Approach 2:
The system is designed with pre-configured infrastructure elements (CDU, heat exchangers, fluid circuits) that can be activated in advance or transitioned to liquid cooling mode before high-density server deployments occur. This preliminary preparation reduces the complexity and disruption of subsequent upgrades.
3Ease of operation
If air cooling systems are used for existing server racks, then ease of operation is maintained, but cooling capacity is insufficient for high density processors
Solution Approach 1:
The CDU serves as an intermediary component that bridges air cooling and liquid cooling systems. It can receive thermal energy from either air-cooled or liquid-cooled server racks and dissipate it through heat exchangers, providing a unified interface that maintains operational simplicity while enabling high-capacity cooling when needed.
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
Enables efficient cooling of high-density data centers with flexible deployment options, reducing operational disruption and costs by integrating with existing infrastructure, supporting a range of server heat loads, and maintaining power delivery without the need for complete retrofitting.
Implementation Method 1
a heat exchanger configured to be fluidically coupled to a facility fluid cooling circuit
Implementation Method 2
a fluid pump fluidically coupled to the heat exchanger configured to pump cooling fluid to at least a portion of IT cabinets
Implementation Method 3
an array of fan and heat exchanger modules fluidically coupled to the facility cooling fluid circuit and disposed adjacent to the CDU. The array of fan and heat exchanger modules are configured to circulate (e.g., push) air through the hot aisle.
Data Source
AI summary
Data center assemblies include first and second arrays of information technology (IT) equipment cabinets defining a hot aisle. The data center assemblies also include an air containment assembly fluidly coupled to the hot aisle, at least one air-cooling unit fluidically coupled the air containment assembly, and/or at least one liquid-cooling system fluidically coupled to at least a portion of the IT equipment cabinets. The at least one fluid-cooling system includes a heat exchanger fluidically coupled to a cooling liquid loop and a fluid pump fluidly coupled to the heat exchanger and the at least a portion of the IT equipment cabinets. The air-cooling units and liquid-cooling systems may be designed to be interchangeable, allowing for seamless adaptation to changes in the number and types of IT equipment cabinets in a data center pod. The types of IT equipment cabinets may include air-cooled and liquid-cooled IT equipment cabinets.