Multi-Rack Cooling Unit Sharing Coolant for Data Centers
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Solution Overview
Problem
The increasing power dissipation in integrated circuit chips poses a cooling challenge, particularly in data centers where traditional air-cooling methods are insufficient, leading to elevated temperatures and inefficient use of air conditioning resources.
Innovation Solution
A multi-rack assembly system is introduced, comprising a first liquid-cooled electronics rack and a second air-cooled or liquid-cooled rack, with a controller managing the flow of cooled coolant between them to optimize cooling based on the cooling requirements of each rack, utilizing a primary and secondary coolant loop to efficiently distribute heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air-cooling methods are used to cool high-powered modules, then the cooling system is simple to implement, but the cooling effectiveness is insufficient and temperature control is poor
Solution Approach 1:
The patent transitions from air-cooling to liquid-cooling systems, using coolant circulation through primary and secondary loops to efficiently remove heat from high-powered electronic modules. The liquid cooling system provides superior temperature control compared to air-cooling while managing the increased complexity through modular rack-level implementations.
Solution Approach 2:
The cooling system is segmented into rack-level liquid cooling units that can be independently implemented and scaled. Each rack contains its own coolant circulation system with pumps, heat exchangers, and control mechanisms, allowing the cooling capability to be divided into manageable segments rather than requiring a centralized complex system.
2Temperature
If liquid-cooling is implemented in each rack independently, then cooling effectiveness is improved, but the system complexity and cost increase
Solution Approach 1:
The liquid cooling system is designed with universal components that can serve multiple racks simultaneously. The secondary coolant loop can distribute cooled coolant to multiple racks, and the heat exchangers can handle thermal loads from multiple sources, reducing the need for completely independent cooling systems in each rack.
Solution Approach 2:
Adjacent racks are merged into a multi-rack assembly where cooling resources are shared. The first rack's cooling unit provides cooled coolant to both its own primary loop and the second rack's secondary loop, combining cooling capabilities across multiple racks to reduce overall system complexity and cost.
3Use of energy by moving object
If excess cooling capacity is not utilized, then the cooling system is simple to operate, but energy efficiency is poor
Solution Approach 1:
The system incorporates controllers that monitor cooling requirements and dynamically adjust coolant flow distribution. The controller receives feedback on thermal loads from various racks and automatically optimizes the allocation of cooling capacity, ensuring energy efficiency while maintaining simple operation through automated control.
Solution Approach 2:
The cooling system automatically balances its own operation by utilizing excess cooling capacity from racks with lower thermal loads to assist racks with higher loads. The system self-regulates the coolant distribution without requiring manual intervention, improving energy efficiency while maintaining ease of operation.
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
This system effectively reduces the heat load on air-conditioning units, maintains uniform temperatures across data center racks, and enhances the reliability and performance of electronic components by leveraging excess cooling capacity from one rack to assist another, thereby improving overall data center cooling efficiency.
Implementation Method 1
at least one cooling unit disposed within the first electronics rack and coupled in fluid communication with a primary coolant loop of the first electronics rack to, at least in part, facilitate cooling of the at least one first rack electronic component
Implementation Method 2
The second electronics rack includes a secondary coolant loop coupled in fluid communication with the at least one cooling unit disposed within the first electronics rack, wherein the at least one cooling unit disposed within the first electronics rack provides cooled coolant to the secondary coolant loop
Implementation Method 3
The liquid absorbs the heat dissipated by the components/modules in an efficient manner
Data Source
AI summary
A multi-rack assembly is provided which includes first and second electronics racks. The first electronics rack includes one or more cooling units disposed within the first electronics rack, which are coupled in fluid communication with a primary coolant loop of the first electronics rack to, at least in part, provide cooled coolant to the primary coolant loop and facilitate cooling one or more first rack electronic components. The second electronics rack includes a secondary coolant loop coupled in fluid communication with the cooling unit(s) disposed within the first electronics rack. The multi-rack assembly further includes a controller to automatically provide cooled coolant to the secondary coolant loop, and wherein the controller controls flow of cooled coolant from the cooling unit(s) to the secondary coolant loop depending, at least in part, on cooling requirements of the first electronics rack.