Server Rack Cooling via Pressurized Air Injection Ducts
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Solution Overview
Problem
Server components in a rack configuration face thermal challenges due to inadequate cooling, as airflow generated by cooling fans becomes heated and ineffective for rear components, leading to insufficient cooling and potential overheating.
Innovation Solution
A cooling system comprising an air mover module, air delivery manifold, and injection ducts is implemented to inject pressurized cooling air directly into thermally challenged areas of servers, supplementing the airflow provided by existing cooling fans and enhancing cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If servers are densely packed in a rack configuration, then space utilization and productivity are improved, but cooling effectiveness deteriorates due to inadequate airflow reaching rear components
Solution Approach 1:
The cooling system is segmented into multiple independent airflow paths: a first airflow path for front components and a second airflow path for rear components. This segmentation allows each path to be optimized independently, ensuring that rear components receive dedicated cooling airflow separate from the front component airflow, thereby resolving the cooling ineffectiveness in densely packed configurations.
Solution Approach 2:
A plenum chamber is introduced as an intermediary component between the rear fan and the rear components. The plenum chamber receives airflow from the rear fan and redistributes it to the rear components, acting as a mediator that ensures adequate cooling airflow reaches the rear components even when densely packed in the rack configuration.
2Device complexity
If airflow is generated only by cooling fans, then device complexity is reduced, but cooling performance becomes insufficient for rear components
Solution Approach 1:
The cooling system merges multiple airflow sources and paths into a unified cooling architecture. The front fan airflow path and rear fan airflow path are combined within the server housing, with the plenum chamber serving as a common distribution point. This merging allows the system to achieve superior cooling performance for both front and rear components while maintaining a relatively simple overall structure.
3Ease of manufacture
If standard cooling airflow paths are used, then ease of manufacture is improved, but thermal management of rear components deteriorates
Solution Approach 1:
The plenum chamber is pre-configured within the server housing to receive airflow from the rear fan and redirect it to the rear components. This preliminary arrangement of the airflow path and plenum chamber structure allows for simplified manufacturing and assembly, as the cooling infrastructure is built into the housing design rather than requiring complex external modifications or assembly steps.
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 solution effectively cools thermally challenged areas by delivering fresh, pressurized air directly to server components, reducing temperatures and enabling higher power density and performance by ensuring adequate cooling, even in densely packed server systems.
Implementation Method 1
The air mover may be located in an air mover module positioned in the server rack and may generate a pressurized airflow
Implementation Method 2
The injection ducts may be used to inject the airflow of cooling air into the servers to provide cooling to the servers
Data Source
AI summary
A cooling system for a server rack may cool one or more servers and one or more components thereof. The cooling system may comprise an air mover, an air delivery manifold, and one or more injection ducts for the one or more servers. The air mover may be located in an air mover module positioned in the server rack and may generate a pressurized airflow. The air delivery manifold receives the pressurized airflow generated by the air mover, and may have delivery ports and provide a fluid path for airflow out of the delivery ports to the injection ducts. The injection ducts may be used to inject the airflow of cooling air into the servers to cool the servers and one or more components thereof.