Cooling Canister Airflow Coordination for Rack Thermal Management
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Solution Overview
Problem
Current computing systems face inefficiencies in cooling due to the use of numerous small fans, which lead to surplus airflow in some areas and inadequate cooling in others, and air leaks through rack systems, resulting in wasted energy and reduced cooling effectiveness.
Innovation Solution
The implementation of cooling canisters that couple with subsets of servers and include openings to form a 'super plenum' with adjacent canisters, allowing for supplemental airflow in case of fan failure, and coordinated control of fans and dampers to optimize airflow distribution based on thermal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If numerous small fans are mounted in individual computing systems, then each system can cool its components, but the overall cooling efficiency decreases due to airflow interference and energy waste
Solution Approach 1:
The patent consolidates multiple individual fan systems into a single shared fan system that serves multiple computing systems through a common airflow path. This merging eliminates airflow interference between individual fans and reduces total energy consumption while maintaining adequate cooling for all systems.
Solution Approach 2:
The shared fan system performs multiple cooling functions simultaneously, serving several computing systems with a single fan assembly. This multi-functional approach replaces numerous single-purpose fans, improving overall energy efficiency while providing universal cooling coverage.
2Ease of operation
If rack level fans are controlled at rack level to cool all computer systems, then a centralized cooling approach is achieved, but airflow distribution becomes inefficient with surplus cooling in some areas and inadequate cooling in others
Solution Approach 1:
The patent segments the rack into multiple zones, each with its own cooling canister that can be independently controlled. This segmentation allows each zone to receive customized airflow based on its specific thermal requirements, eliminating the surplus and deficiency problems of unified rack-level control.
Solution Approach 2:
The patent implements local cooling control where each cooling canister is independently managed according to the specific thermal conditions of its associated computing systems. This local quality approach ensures each area receives appropriate cooling without waste or deficiency.
3Adaptability or versatility
If air passages in rack are designed for wire access and mounting, then rack functionality is enabled, but air leaks occur that waste cooling airflow
Solution Approach 1:
The patent extracts the airflow path from the general rack environment and confines it within sealed cooling canisters. This separation removes the interference of rack air passages and leak paths from the cooling airflow, preventing energy loss while maintaining rack functionality for wire access and mounting.
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 enhances cooling efficiency by ensuring adequate airflow to all servers, reducing energy waste, and maintaining effective cooling even during fan failures, thereby improving the overall thermal management in computing systems.
Implementation Method 1
a fan coupled to the cooling canister and configured to move air through the cooling canister and the subset of servers
Implementation Method 2
a heat sink coupled to the cooling canister
Data Source
AI summary
A cooling controller of a cooling canister is configured to coordinate control of a set of fans coupled with the cooling canister with another set of fans coupled with an adjacent cooling canister. The cooling canister and the adjacent cooling canister include openings that are coupled together that permit air to flow between the cooling canister and the adjacent cooling canister. In some embodiments, the cooling control also coordinates control of a damper in at least one of the coupled openings of the coupled cooling canister and adjacent cooling canister.