Immersion Rack Leak Detection Using Float and Optical Indication
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Solution Overview
Problem
Existing liquid-cooled electronic devices in datacenters face challenges with leak detection systems that require numerous sensors and controllers, increasing costs and limiting rack utilization, necessitating a low-cost, independently-addressable solution.
Innovation Solution
A leak detection system using optical transmitters and receivers, combined with a lever mechanism and floating unit, provides visual and alert indications of leaks in immersion-cooled rack-mounted assemblies, eliminating the need for complex sensors and controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If numerous sensors and controllers are used for leak detection, then detection reliability is improved, but device complexity and operating costs increase
Solution Approach 1:
The system divides the monitoring function into multiple independently-addressable leak detection units, each capable of autonomous operation. Each unit contains its own indicator mechanism, eliminating the need for complex centralized control while maintaining comprehensive coverage across multiple rack positions.
Solution Approach 2:
Each leak detection unit is designed to be independently-addressable and self-contained, with integrated indicator mechanisms that automatically signal leaks without requiring external controller intervention. This self-service capability reduces system complexity while maintaining reliable detection across all monitoring points.
2Reliability
If numerous sensors and controllers are installed, then leak detection capability is improved, but rack utilization is limited
Solution Approach 1:
The monitoring system is segmented into compact, independently-addressable units that can be distributed throughout the rack structure. This segmentation allows multiple monitoring points without requiring extensive wiring or controller infrastructure, thereby preserving rack space for computing equipment while maintaining comprehensive leak detection coverage.
3Measurement precision
If complex sensors and controllers are used, then detection precision is improved, but operating costs increase
Solution Approach 1:
The system employs simple, low-cost indicator mechanisms in each leak detection unit that provide sufficient precision for leak detection without requiring expensive sensors or controllers. These simplified components reduce both manufacturing complexity and operating costs while maintaining adequate detection capability for the application.
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 detects and locates leaks in immersion-cooled rack-mounted assemblies, reducing operational costs and enhancing rack utilization by simplifying the detection process.
Implementation Method 1
a floating unit positioned within the immersion case and configured to float on the immersion cooling liquid
Implementation Method 2
an optical rack-mounted assembly locator beam originating from an optical transmitter and traveling to an optical receiver
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
Systems and methods for detecting a leak in a rack-mounted assembly are disclosed. The system includes a floating unit positioned so as to be in contact with a surface of immersive cooling liquid contained in the rack-mounted assembly and a lever assembly mounted on the rack-mounted assembly and operatively coupled to the floating unit. In response to a variation of a level of the immersive cooling liquid being above a level threshold, the floating unit actuates the lever assembly to provide visual indication that a leak is occurring.