Liquid Cooling Leak Isolation via Segmented Valve Control
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Solution Overview
Problem
Conventional liquid cooling systems for server racks are unreliable due to leaks, which lead to coolant accumulation and reduced efficiency, necessitating improved leak control methods to maintain desired temperatures.
Innovation Solution
A liquid cooling system incorporating a thermal contact structure, manifold system, leak detection sensors, and a control system with valves that automatically isolate leaks, allowing continuous operation of other servers while addressing the leak by shutting off power and closing valves to prevent coolant flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the pump operates continuously to minimize overheating, then the cooling efficiency is improved, but coolant leaks cause accumulation and system failure
Solution Approach 1:
The liquid cooling system is divided into multiple independent zones, each with its own pump and leak detection sensor. When a leak is detected in one zone, only that specific zone is isolated and shut down, while other zones continue to operate independently, maintaining partial cooling functionality and overall system reliability
Solution Approach 2:
Leak detection sensors continuously monitor for coolant leaks and provide real-time feedback to the control system. Upon detecting a leak, the system automatically responds by closing isolation valves and shutting down the affected pump, preventing further coolant loss and maintaining system reliability without requiring continuous operation of all components
2Measurement precision
If leak detection sensors are positioned below each server, then leak detection precision is improved, but the complexity of the system increases
Solution Approach 1:
The server rack is divided into multiple zones, each with dedicated leak detection sensors positioned below individual servers or server groups. This segmentation allows precise localization of leaks to specific zones while maintaining manageable system complexity through modular architecture
Solution Approach 2:
A control system acts as an intermediary between the distributed leak detection sensors and the isolation valves/pumps. The control system processes sensor signals, determines the location of leaks, and coordinates the appropriate response, simplifying the overall system architecture while maintaining high detection precision
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 solution effectively isolates leaks, preventing coolant accumulation and maintaining server rack efficiency by allowing other servers to continue operating while isolating the affected area, thus minimizing downtime and performance impact.
Implementation Method 1
a liquid leak detection sensor positioned at a first one of the plurality of heat-generating computer systems below the closed liquid conveyance system
Implementation Method 2
heat is transferred from a higher temperature heat-generating device to a lower temperature heat sink by contact with an intermediate thermal contact structure
Implementation Method 3
The heat is then transferred via the liquid loop and exhausted to ambient air by a heat exchanger
Data Source
AI summary
A method and system controls cooling system leaks in a rack. The method includes monitoring leak detection sensors positioned at computer systems and below sections of a liquid conveyance system. In response to determining if a signal was received from one of the leak detection sensors that is indicative of a leak, the leak detection sensor and the corresponding one of the plurality of computer systems associated the received signal is determined. Power is disconnected to the corresponding one of the computer systems and a signal is transmitted to implement moving first and second valves from open to closed positions. The first valve is positioned within the liquid conveyance system between a hot rack manifold and a thermal contact structure associated with the computer system associated with the received signal. The second valve is positioned within the liquid conveyance system between a cool rack manifold and the thermal contact structure.