Expandable Tube Targeted Cooling for Overheating Servers
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Solution Overview
Problem
Rack-mounted servers in a chassis often experience overheating, which existing cooling systems address by increasing fan speed, leading to reduced cooling for other servers and inefficiencies.
Innovation Solution
A system comprising a chassis manager, thermal sensors, a cold air source, and expandable tubes of flexible memory material that direct cold air to specific overheating servers, allowing for targeted auxiliary cooling without increasing fan speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If fan speed is increased to cool overheating servers, then cooling effectiveness for the overheating server is improved, but cooling performance for adjacent servers deteriorates due to reduced static and dynamic pressure
Solution Approach 1:
The cooling system is segmented into server-specific zones with individual controllable outlets. Each rack-mounted server has its own dedicated cold air outlet positioned adjacent to it, allowing independent cooling control for each server without affecting others. This segmentation enables targeted cooling of overheating servers while maintaining stable cooling for adjacent servers.
Solution Approach 2:
The system implements local quality control by providing each server with a dedicated cold air outlet and using local thermal sensors to detect temperature conditions specific to each server. The expandable tube with directional holes delivers cold air precisely to the local area of the overheating server, ensuring that cooling adjustments are localized and do not compromise the cooling performance of adjacent servers.
2Temperature
If primary cooling air is increased to address overheating, then temperature control for the overheating server is improved, but static and dynamic pressure in the cooling system decreases, affecting other servers
Solution Approach 1:
The cooling system is divided into independent channels with dedicated cold air outlets for each server. Each outlet can be independently activated to deliver cold air directly to its adjacent server, allowing the system to address overheating in one server without increasing overall system air flow that would reduce static and dynamic pressure for other servers.
Solution Approach 2:
An expandable tube made of flexible memory material acts as an intermediary device between the cold air outlet and the server. When a server overheats, the tube expands and uses its memory material properties to create directional holes that channel cold air precisely to the overheating areas, delivering targeted cooling without requiring increased overall system pressure.
3Temperature
If auxiliary cooling is added to overheating servers, then temperature control is improved, but device complexity increases
Solution Approach 1:
The expandable tube is made of flexible memory material that automatically responds to temperature changes and cold air pressure. When cold air is delivered to the tube, it self-inflates and creates directional holes without requiring external actuators or complex control mechanisms. This self-service behavior reduces device complexity while providing effective targeted cooling.
Solution Approach 2:
The system changes the physical state and properties of the expandable tube by introducing cold air pressure and temperature differential. The tube transitions from a collapsed state to an expanded state with directional holes formed, utilizing the physical parameter changes of the flexible memory material to create the cooling pathway without mechanical actuators.
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
Effectively cools overheating servers without compromising primary cooling for other servers, maintaining efficient temperature regulation within the chassis.
Implementation Method 1
an expandable tube of flexible memory material coupled to each of the plurality of cold air valves, where the expandable tube inflates with cold air from the cold air source to expose directional holes
Data Source
AI summary
A system selectively cools a set of at least one rack-mounted server in a chassis. The system comprises: a chassis; a chassis manager; a set of at least one thermal sensor coupled to each rack-mounted server in the chassis; a cold air source; a cold air conduit coupled to the cold air source; a plurality of cold air valves coupled to the cold air conduit; and an expandable tube of flexible memory material coupled to each of the plurality of cold air valves, where the expandable tube inflates with cold air from the cold air source to expose directional holes, and thus cold air, across a specific predetermined sub-area of a particular overheating rack-mounted server in response to the chassis manager detecting that the particular overheating rack-mounted server is exceeding a predetermined temperature.