Jet Cooling With Intermediate Mesh For High Heat Flux
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cooling devices are inadequate for effectively lowering the operating temperature of high-power heat-generating devices due to insufficient heat flux removal.
Innovation Solution
A cooling assembly featuring a substrate with orifices forming jet paths, a mesh with aligned apertures, and a heat-generating device oriented transverse to the jet paths, where cooling fluid is passed through to impinge on the device, optimizing thermal energy dissipation through flow pattern and velocity changes, and optionally incorporating an intermediate layer with phase-change material and an electrically-insulating layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional cooling devices are used, then the structure is simple, but the heat flux removal capability is insufficient for high-power devices
Solution Approach 1:
The cooling device is segmented into multiple functional layers: a substrate with cooling channels, a phase-change material layer for heat absorption, and an intermediate mesh layer for flow distribution. This segmentation allows each layer to specialize in specific heat removal mechanisms, significantly enhancing overall heat flux removal capability while maintaining manageable structural complexity through modular design
Solution Approach 2:
The invention changes the physical state parameter of the cooling fluid by incorporating phase-change material that transitions from solid to liquid at the operating temperature range. This parameter change enables latent heat absorption, dramatically increasing the heat flux removal capability beyond what conventional single-phase cooling systems can achieve
2Power
If cooling fluid flow is increased to remove more heat, then heat dissipation improves, but flow uniformity and velocity distribution deteriorate
Solution Approach 1:
An intermediate mesh layer is introduced as a mediator between the cooling fluid source and the heat-generating device. This mesh distributes the cooling fluid flow uniformly across the surface, preventing flow concentration and velocity hotspots while maintaining high overall flow rates for effective heat dissipation
Solution Approach 2:
The invention utilizes hydraulic principles by designing the substrate with integrated cooling channels that guide fluid flow, combined with the mesh layer to create uniform pressure distribution. This hydraulic design ensures stable and uniform flow patterns across the entire cooling surface, improving heat dissipation efficiency without compromising flow stability
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
Enhances heat dissipation from high-power heat-generating devices by optimizing cooling fluid flow and incorporating phase-change materials to absorb thermal energy, effectively maintaining the device within acceptable temperature ranges.
Implementation Method 1
incorporating an intermediate layer with phase-change material and an electrically-insulating layer
Implementation Method 2
phase-change materials to absorb thermal energy
Implementation Method 3
Cooling fluid may be used to receive heat generated by the heat-generating device by convective and/or conductive thermal transfer
Implementation Method 4
Cooling fluid may be used to receive heat generated by the heat-generating device by convective and/or conductive thermal transfer
Data Source
AI summary
An assembly includes a substrate including a base portion defining a plurality of orifices that extend through the base portion, the plurality of orifices defining a plurality of jet paths extending along and outward from the plurality of orifices, a mesh coupled to the base portion, the mesh defining a plurality of pores aligned with the plurality of jet paths, and a heat-generating device coupled to the mesh opposite the base portion, the heat-generating device defining a bottom surface that is oriented transverse to the plurality of jet paths.