Coolant Distribution Unit Layout for Hot-Swap Liquid Cooling
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Solution Overview
Problem
The increasing demand for computing capacity in data centers leads to higher heat generation, which degrades performance and requires efficient cooling systems. Traditional air cooling methods are inadequate for high-power density electronic components.
Innovation Solution
A high-density liquid cooling system that includes a coolant distribution unit (CDU) with a liquid-to-liquid heat exchanger, allowing for efficient heat transfer from a secondary coolant loop to a primary loop, while enabling maintenance of components during active operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional air cooling methods are used, then device simplicity is maintained, but heat removal capability is insufficient for high-power density components
Solution Approach 1:
The patent implements liquid cooling by circulating coolant through channels formed in the substrate, replacing traditional air cooling methods. The coolant flow paths are integrated into the substrate structure, allowing efficient heat removal from high-power density components while maintaining relative system simplicity through the use of fluid dynamics rather than complex mechanical cooling systems
2Reliability
If coolant distribution unit components are maintained or replaced, then system reliability is improved, but operational continuity is interrupted
Solution Approach 1:
The coolant distribution unit is divided into modular components including replaceable flow distributors that can be independently accessed and replaced. The substrate with integrated coolant channels serves as a permanent base while only the distributor components need replacement, enabling maintenance without replacing the entire CDU or interrupting system operation
Solution Approach 2:
The design allows for pre-assembled flow distributor components to be prepared and ready for rapid replacement. The modular architecture enables maintenance personnel to quickly swap out worn distributors without complex disassembly procedures, minimizing downtime while ensuring reliable operation
3Ease of repair
If the coolant distribution unit is shut down for maintenance, then component access is improved, but cooling function is lost
Solution Approach 1:
The CDU is segmented into a permanent substrate with integrated coolant channels and removable flow distributor components. This segmentation allows the substrate to remain in place and continue functioning while only the distributor components are removed for maintenance, preserving cooling function during repair operations
Solution Approach 2:
The substrate with integrated coolant channels acts as an intermediary structure that maintains the cooling function independently of the distributor components. The substrate provides continuous coolant flow paths that remain operational even when distributors are removed or replaced, serving as a mediator that decouples maintenance activities from system functionality
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 heat in high-density data centers, maintaining performance and extending the lifespan of electrical components by continuously cooling them, even during maintenance of the cooling unit.
Implementation Method 1
CDUs typically include a liquid to liquid heat exchanger, which allows heat transfer from coolant in a secondary loop to a primary loop
Data Source
AI summary
Embodiments of the invention provide a system and method for housing electrical components of a high-density liquid cooling unit to liquid cool electrical components. The system includes a first electrical cabinet housing at least one electrical switch and a controller. The first electrical cabinet is swingable outward to open, and the first electrical cabinet opens while the high density liquid cooling system continues to operate to liquid cool electrical components. The system includes a second electrical cabinet housing a first motor drive and a second motor drive. The second electrical cabinet is accessible when the first electrical cabinet swings outward. One of the first motor drive and the second motor drive are replaceable while the high density liquid cooling unit continues to operate.