Dual Parallel Path Cooling for Dual Socket Systems
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Solution Overview
Problem
In dual socket information handling systems, the serial positioning of CPUs in a shared airflow path leads to reduced cooling capacity for the second CPU, as airflow heated by the first CPU raises its temperature, potentially exceeding maximum operating temperatures and necessitating power throttling to prevent damage.
Innovation Solution
A dual parallel path cooling system is implemented, dividing airflow into four paths to create distinct cooling paths for each CPU, where two paths bypass the first CPU to cool the second CPU and vice versa, maintaining airflow temperature near ambient levels for effective heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If CPUs are positioned serially in a shared airflow path, then device complexity is reduced, but cooling capacity for the second CPU deteriorates due to heated airflow from the first CPU
Solution Approach 1:
The single shared airflow path is segmented into multiple distinct cooling paths. The cooling system divides the airflow into at least two separate paths, with each path dedicated to cooling a specific CPU socket. This segmentation prevents heated airflow from one CPU from contaminating the cooling airflow for another CPU, thereby maintaining lower airflow temperatures for effective heat transfer.
2Device complexity
If airflow is shared between multiple CPUs, then device complexity is reduced, but cooling effectiveness deteriorates leading to power throttling
Solution Approach 1:
The cooling system segments the airflow into multiple independent paths, allowing each CPU to receive dedicated cool airflow. This enables both CPUs to operate at higher power levels without thermal throttling, as each processor has its own dedicated cooling channel that maintains optimal temperature conditions.
3Temperature
If fan speed is increased to cool the second CPU in serial positioning, then cooling capacity improves, but acoustic noise increases
Solution Approach 1:
By segmenting the airflow into multiple dedicated paths, the system achieves effective cooling of multiple CPUs without requiring excessive fan speed increases. Each CPU receives sufficient cool airflow through its dedicated path, allowing the system to maintain lower fan speeds and thereby reduce acoustic noise while still achieving effective cooling.
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 configuration allows both CPUs to operate at higher power levels without exceeding maximum temperatures, enabling increased processing capability while maintaining acoustic noise within acceptable limits, and reduces fan speeds for quieter operation.
Implementation Method 1
A cooling system for a pair of heat sources aligned axially in an airflow may utilize four distinct paths separating the airflow into dual parallel cooling paths comprising four airflow paths
Data Source
AI summary
An air duct for cooling dual socket information handling systems divides airflow into two parallel paths. Inner walls, a chassis divider and a top surface form a main channel. An intermediate divider and intermediate wall are positioned between the sockets, wherein airflow exiting the first socket is prevented from flowing through the second socket. Lower lateral channels and upper lateral channels are formed between each inner wall and a corresponding outer wall, wherein lower lateral channels allow airflow to bypass the first socket to cool the second socket and the upper lateral channels allow heated airflow exiting the first socket to bypass the second socket.