Jet Cooling With Intermediate Mesh And Phase-Change Layer
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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 pores, and an encapsulated phase-change layer that enhances heat dissipation by optimizing cooling fluid flow and thermal energy absorption.
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 mesh layer with pores for fluid distribution, and a phase-change material layer for heat absorption. This segmentation allows each layer to perform its specific function optimally, achieving high 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 between solid and liquid states during heat absorption. This parameter change enables the cooling system to handle higher heat fluxes by utilizing latent heat of fusion, significantly improving the power handling capability beyond conventional single-phase cooling
2Temperature
If cooling fluid is directed to impinge on the heat-generating device surface, then heat removal is enhanced, but the operating temperature may still not reach acceptable levels for high-power devices
Solution Approach 1:
The invention utilizes phase transitions of the cooling fluid and phase-change material to enhance heat removal. As cooling fluid passes through the mesh layer, it absorbs heat from the heat-generating device, and the phase-change material layer undergoes solid-liquid phase transition, absorbing large amounts of latent heat. This dual phase-transition mechanism enables effective temperature control even for high-power devices generating excessive heat flux
Solution Approach 2:
The mesh layer acts as an intermediary between the cooling fluid and the heat-generating device surface. It distributes the cooling fluid uniformly across the surface, ensuring consistent heat removal and preventing localized overheating. This intermediary structure enables effective thermal coupling while maintaining fluid flow control
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 maximizes heat dissipation from heat-generating devices, maintaining them at acceptable operating temperatures by altering fluid flow patterns and utilizing phase-change materials to absorb thermal energy.
Implementation Method 1
Cooling fluid may be used to receive heat generated by the heat-generating device by convective and/or conductive thermal transfer
Implementation Method 2
Cooling fluid may be used to receive heat generated by the heat-generating device by convective and/or conductive thermal transfer
Implementation Method 3
an encapsulated phase-change layer positioned on the mesh
Implementation Method 4
heating the mesh, and changing a matter phase of an encapsulated phase-change material of a phase-change layer positioned on the mesh
Data Source
AI summary
An assembly includes a substrate defining 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, an encapsulated phase-change layer positioned on the mesh, 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.