Multi-Loop Cooling Architecture for Heterogeneous IT Environments
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Solution Overview
Problem
Heterogeneous IT environments often require a mix of air and liquid cooling, leading to custom solutions that are not optimized, requiring additional engineering for each deployment, and can result in inadequate cooling capacity or safety issues due to personnel presence.
Innovation Solution
A multi-loop cooling system that includes a primary cooling loop with a dry cooler and a liquid heat exchange device, and a secondary loop that integrates liquid heat exchange devices with IT units, along with an air cooling path using outside air, to provide scalable and efficient cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If custom liquid cooling solutions are developed per application load, then cooling capacity is optimized for specific applications, but device complexity and engineering requirements increase for each deployment
Solution Approach 1:
The patent applies universality by designing a liquid cooling system with standardized components (dry coolers, liquid-to-liquid heat exchangers, pumps, controllers) that can serve multiple IT cooling applications. The system uses a common liquid coolant (water or water-glycol mixture) circulating through standardized heat exchangers that can cool various IT equipment types, eliminating the need for custom engineering for each deployment while maintaining optimized cooling capacity
Solution Approach 2:
The patent segments the cooling system into modular components: dry coolers for outdoor air cooling, liquid-to-liquid heat exchangers for heat transfer, circulation pumps for fluid movement, and controllers for regulation. Each module can be independently sized and configured based on specific application loads, allowing standardized modules to be combined for different cooling requirements without custom engineering
2Adaptability or versatility
If mixed liquid and air cooling environments are used, then cooling flexibility is improved, but cooling optimization deteriorates due to unbalanced capacity allocation
Solution Approach 1:
The patent implements feedback through temperature sensors positioned in both liquid and air cooling paths, with a controller that receives temperature data and dynamically adjusts the operation of dry coolers, pumps, and heat exchangers. This closed-loop control optimizes the liquid-to-air cooling ratio in real-time based on actual IT heat loads and environmental conditions, preventing capacity imbalance while maintaining flexibility
Solution Approach 2:
The patent applies dynamics by making the cooling system adaptive rather than static. The controller continuously monitors temperatures and adjusts the liquid cooling capacity (via pump speed and heat exchanger operation) and air cooling capacity (via dry cooler operation and airflow control) to match varying IT loads and environmental conditions, optimizing the liquid-to-air ratio dynamically
3Reliability
If manual tuning of cooling systems is performed, then cooling performance is adjusted for IT refresh cycles, but time consumption and operational complexity increase
Solution Approach 1:
The patent implements self-service through an automated control system with temperature sensors, circulation pumps with variable speed control, and a controller that autonomously adjusts cooling parameters. The system automatically adapts to IT refresh cycles and changing loads without manual intervention, maintaining optimal cooling performance while eliminating the time and complexity of manual tuning
Solution Approach 2:
The patent uses feedback control where temperature sensors continuously monitor IT equipment temperatures and coolant temperatures, and the controller automatically adjusts pump speeds, heat exchanger operation, and dry cooler performance to maintain optimal cooling. This closed-loop system eliminates manual tuning by self-correcting based on real-time temperature data
4Ease of manufacture
If air cooling is used in mixed environments with personnel present, then cooling simplicity is maintained, but safety and temperature control deteriorate due to personnel presence
Solution Approach 1:
The patent segments the cooling approach by using liquid cooling for IT equipment that generates high heat densities, while reserving air cooling for personnel areas and lower-density equipment. The liquid cooling system uses closed-loop circulation to efficiently remove heat from IT equipment without exposing personnel to hot air exhaust, maintaining simplicity where appropriate while ensuring safety where needed
Solution Approach 2:
The patent extracts the heat removal function from the air cooling path for high-density IT equipment by implementing a separate liquid cooling system. The liquid cooling system captures and removes heat directly from IT equipment before it can affect personnel areas, while air cooling continues to serve personnel comfort and lower-density equipment, separating the harmful heat extraction function from the safe air circulation path
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 achieves efficient and scalable cooling for heterogeneous IT environments, optimizing the liquid-to-air cooling ratio and reducing the need for manual tuning, while ensuring safe operating temperatures for both IT equipment and personnel.
Implementation Method 1
a module comprising at least one dry cooler and at least one liquid heat exchange device
Implementation Method 2
at least one air intake from outside the facility that supplies air for cooling the one or more IT units
Implementation Method 3
a primary cooling loop with the at least one dry cooler and the at least one liquid heat exchange device. The system also includes a secondary loop that includes the at least one liquid heat exchange device and one or more IT units
Data Source
AI summary
Multiple systems and devices for providing liquid and air cooling for IT components is disclosed. The system includes a module comprising at least one dry cooler and at least one liquid heat exchange device. The module includes a primary cooling loop with the at least one dry cooler and the at least one liquid heat exchange device. The system also includes a secondary loop that includes the at least one liquid heat exchange device and one or more IT units in a facility. The system includes a path for air cooling the one or more IT units in the facility that includes at least one air intake from outside the facility that supplies air for cooling the one or more IT units.