Liquid-Cooled Rack Node With Leak Containment Barrier
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Solution Overview
Problem
Liquid cooling systems in information handling systems (IHS) face challenges in effectively managing and containing leaks, which can lead to catastrophic system failures due to potential electronic shorts and exothermal reactions, especially in rack-configured systems where heat-generating components are submerged in cooling liquids.
Innovation Solution
A Direct-Interface Liquid-Cooled (DL) Rack Information Handling System (RIHS) with a leak containment barrier and modular liquid distribution system, featuring conduits with a trough that forms a drain path to a drain port, and a Liquid Infrastructure Management Controller (LIMC) for leak detection and automatic shutoff to prevent damage from leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If liquid cooling is implemented to improve heat dissipation efficiency, then cooling performance is improved, but risk of catastrophic system failure from leaks increases
Solution Approach 1:
The system is divided into isolated liquid cooling circuits at different levels (rack-level manifolds, node-level conduits, component-level cold plates). Each segment has independent leak containment barriers, so a leak in one segment does not compromise the entire system. This segmentation allows liquid cooling to be implemented while limiting the potential damage scope of any leak.
Solution Approach 2:
Leak containment barriers and absorbent materials are introduced as intermediary elements between the cooling liquid and electronic components. These intermediaries detect and contain leaks before they can cause catastrophic damage, enabling the system to maintain both high cooling efficiency and reliability.
2Temperature
If liquid cooling conduits are installed to improve cooling capability, then temperature control is improved, but complexity of leak detection and containment increases
Solution Approach 1:
Leak containment barriers and absorbent materials are pre-installed in the system before operation begins. Liquid sensors are pre-positioned at strategic locations along the cooling conduits. This preliminary preparation ensures that when a leak occurs, the containment system is already in place and can immediately activate without requiring complex real-time decision-making or system reconfiguration.
Solution Approach 2:
The leak containment system is designed to automatically detect and respond to leaks without requiring external intervention. Liquid sensors automatically trigger shut-off valves and activate containment barriers when leakage is detected, allowing the system to self-manage the leak response and reducing the complexity of external monitoring and control systems.
3Quantity of substance
If storage drive carriers are added to increase data storage capacity, then storage capability is improved, but vibration affecting storage drive operation increases
Solution Approach 1:
Vibration damping materials are pre-installed in the storage drive carrier structure before storage drives are installed. These materials are positioned to absorb and dissipate vibrations generated by cooling pumps and liquid flow throughout the rack. By providing cushioning in advance, the system protects storage drives from vibration-induced operational issues while maintaining high storage capacity.
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 DL RIHS effectively regulates ambient temperatures of heat-generating components while preventing damage from leaks by detecting and containing liquid spills, ensuring continuous operation and protecting sensitive IT components.
Implementation Method 1
The cooling liquid regulates the ambient temperature of the LC node by absorbing and transferring heat from within the node via the cooling liquid
Implementation Method 2
absorbing and transferring heat from within the node via the cooling liquid
Implementation Method 3
The trough forms a drain path to a drain port of the chassis
Data Source
AI summary
A method of assembling a direct-contact, liquid-cooled (DL) Rack Information Handling System (RIHS) includes inserting a leak containment barrier in a node enclosure provisioned with heat-generating functional components. The method also includes attaching a system of conduits supplying cooling liquid through the node enclosure and including a supply conduit extending from a node inlet coupling and a return conduit terminating in a node outlet coupling. A trough of the leak containment barrier underlays a portion of the system of conduits of an LC node and forms a drain path to a drain port of the node enclosure. The method further includes mounting the LC node insertably received in one node-receiving slot having a rear section configured for blind mating of the node inlet and outlet ports to a node-receiving liquid inlet port and a node-receiving liquid outlet port positioned to be inwardly facing to the couplings of the LC node.