Cooling Duct Shaped Baffle Airflow Pressure Drop
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Solution Overview
Problem
Conventional cooling ducts with uncontoured designs require high airflow velocities and large pressure drops to dissipate heat efficiently, leading to increased power costs and inefficiencies in cooling electronic components.
Innovation Solution
A cooling duct with a shaped baffle that constrains airflow to optimize cooling across electronic components, using a contoured design with adjustable vertices to tailor airflow speeds and reduce pressure drops, thereby minimizing power expenditure while ensuring all surfaces remain below a safe temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional uncontoured cooling ducts are used, then heat dissipation is achieved, but power consumption increases due to high pressure drops
Solution Approach 1:
The patent applies contoured surfaces with curved transitions instead of sharp angles in the cooling duct geometry. The contoured baffle and duct walls create smooth airflow paths that reduce turbulence and pressure losses, directly addressing the energy efficiency problem while maintaining cooling effectiveness
Solution Approach 2:
The patent modifies geometric parameters of the cooling duct including contour shapes, baffle angles, and cross-sectional areas. By optimizing these parameters, the duct achieves lower pressure drops and reduced power consumption while still achieving the required heat dissipation from electronic components
2Temperature
If high airflow velocities are used in uncontoured ducts, then cooling effectiveness improves, but pressure drops increase significantly
Solution Approach 1:
The contoured design with curved surfaces in the duct and baffle structures eliminates sharp transitions that cause flow separation and turbulence. This allows high airflow velocities to be maintained with significantly reduced pressure drops, resolving the contradiction between cooling effectiveness and pressure loss
Solution Approach 2:
The contoured baffle is positioned and shaped in advance to guide airflow smoothly around electronic components before turbulence can develop. The pre-shaped flow paths ensure that high velocities are maintained efficiently throughout the duct, reducing overall pressure drops while preserving cooling performance
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 shaped baffle design achieves uniform cooling of electronic components with significantly reduced pressure drops, resulting in a five- to tenfold increase in power efficiency compared to uncontoured ducts, while maintaining components within safe temperature limits.
Implementation Method 1
Airflow from a fan or bleed is directed onto and around the electronics module for convective cooling
Implementation Method 2
Components with limited thermal output or situated in cool environments may be cooled by passive convection or conduction to a cold plate or cooled structure
Data Source
Figure 1~3
Figure 4
AI summary
A cooling system, 10, comprises an electronics module, 14, and a duct, 12. The electronics module, 14, produces more heat at a first location than at a second location, and is rated to a safe operating temperature. The duct, 12, surrounds the electronics module, 14, and has a shaped baffle, 26, with a constricted region near the first location and an open region near the second location. The expanded region has greater cross-sectional flow area than the constricted region. Airflow through the duct, 12, cools both the first location and the second location to within an efficiency margin below the safe operating temperature.