Dual-duct Cooling for Memory Modules
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Solution Overview
Problem
Conventional cooling methods for computing devices, particularly those with multiple memory modules and CPUs, face inefficiencies in air flow directionality and thermal management, leading to excessive operating temperatures and increased power consumption due to the limitations of single air duct configurations and high air speed requirements.
Innovation Solution
The implementation of a dual-duct configuration within computing devices, where a first duct with high thermal conductivity surrounds heat-generating components and directs air flow, and a second duct surrounds the first duct, creating a confined air flow path that enhances convective heat dissipation, potentially incorporating a heat sink for conductive heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single air duct configuration is used to constrain air flow around memory modules, then the cooling effect is limited, but increasing air speed to improve cooling performance increases power consumption and noise
Solution Approach 1:
The cooling system is segmented into multiple functional zones using separate first and second air ducts. The first duct directs air along side surfaces of memory modules, while the second duct directs air along opposite side surfaces. This segmentation allows optimized airflow distribution without requiring excessive air speed, thereby reducing fan power consumption while effectively cooling memory modules.
Solution Approach 2:
The first air duct is positioned within the space defined by the second air duct, creating a nested configuration. This nested doll structure allows both ducts to operate simultaneously with complementary airflow patterns, maximizing cooling efficiency within the available space without increasing overall system size or requiring higher air speeds.
2Temperature
If a single air duct is used to direct airflow around memory modules, then airflow coverage is insufficient, but using multiple ducts increases device complexity
Solution Approach 1:
The cooling system is segmented into multiple functional zones using separate first and second air ducts. The first duct directs air along side surfaces of memory modules, while the second duct directs air along opposite side surfaces. This segmentation allows optimized airflow distribution without requiring excessive air speed, thereby reducing fan power consumption while effectively cooling memory modules.
Solution Approach 2:
Both the first and second air ducts serve the universal function of cooling memory modules, but they achieve this through different airflow paths. This multi-functionality approach allows the system to cover more surface area and improve overall cooling efficiency without requiring each duct to be overly complex, as each duct maintains a relatively simple structure.
3Temperature
If higher air speed is used to improve cooling performance in a single duct system, then thermal performance improves slightly, but the effect becomes negligible at speeds greater than 3 m/s while power consumption increases
Solution Approach 1:
The cooling system is segmented into multiple functional zones using separate first and second air ducts. The first duct directs air along side surfaces of memory modules, while the second duct directs air along opposite side surfaces. This segmentation allows optimized airflow distribution without requiring excessive air speed, thereby reducing fan power consumption while effectively cooling memory modules.
Solution Approach 2:
Instead of relying on increasing air speed in a single dimension, the system extends cooling coverage to additional spatial dimensions by introducing a second duct that covers opposite side surfaces. This dimensional expansion provides more cooling surface area and improves heat dissipation efficiency without requiring higher air speeds, thereby improving cooling productivity.
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 dual-duct configuration effectively reduces operating temperatures of memory devices by up to 20°C compared to single-walled duct systems, improving thermal management while minimizing the need for increased air speed and associated power consumption.
Implementation Method 1
a first duct (102) sized and shaped to surround the grouping of memory devices (116) proximate to the grouping of memory devices (116) on three sides and to direct air flow from the first fan (122A) around the grouping or memory devices (116)
Implementation Method 2
which may be formed from materials having high thermal conductivity, and may enable thermal coupling of a heat sink to the heat-generating component or components via the first duct
Implementation Method 3
a heat sink (120) supported on the upper surface (114) of the processor (118)
Data Source
AI summary
Kits for cooling computing devices may include at least one heat-generating component and a fan. A first duct may be sized and shaped to surround the at least one heat-generating component on three sides to direct a portion of air flow from the fan. A second duct may be sized and shaped to extend over the first duct and direct another portion of air flow between the first and second ducts. The at least one heat-generating component may comprise multiple vertically and longitudinally aligned memory modules Computing devices, electronic systems and methods of cooling are also disclosed.