Evaporator Cooling Channel Layout for Uniform Heat Dissipation
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Solution Overview
Problem
Conventional direct air-cooling techniques are insufficient for dissipating heat from high heat flux generation devices, leading to issues like high evaporation, low water level, uneven heat dissipation, and reduced service life due to adverse conditions such as locally high temperatures and unstable pressure.
Innovation Solution
An evaporator structure with a heat exchange component divided into a steam region and an inflow water region by a partition wall, featuring parallel transverse channels, lengthwise steam channels, and strategically placed cooling fluid channels that prevent direct interconnection, ensuring uniform circulation and contact area for effective heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional direct air-cooling techniques are used, then device simplicity is maintained, but heat dissipation capacity is insufficient for high heat flux devices
Solution Approach 1:
The heat exchange component is segmented into multiple functional regions (steam generation region, steam collection region, water inlet region) with dedicated channels for each function. This segmentation allows each region to be optimized for its specific purpose, improving overall heat dissipation capacity while maintaining a relatively simple integrated structure.
Solution Approach 2:
The cooling fluid channels serve multiple functions: they distribute cooling fluid to the steam generation region, collect steam, and maintain pressure balance across different regions. This multi-functionality increases heat dissipation capacity without proportionally increasing system complexity.
2Power
If cooling fluid channels are interconnected to enable fluid circulation, then heat dissipation efficiency is improved, but local hotspots and uneven heat dissipation occur
Solution Approach 1:
Different regions of the heat exchange component have locally optimized channel configurations. The steam generation region has channels positioned to maximize cooling, while the steam collection region has channels designed for efficient steam removal. This local optimization ensures uniform temperature distribution while maintaining high heat dissipation efficiency.
Solution Approach 2:
The partition wall with its specific channel configuration creates pressure equilibrium between the steam generation region and water inlet region. This pressure balancing prevents uneven fluid distribution that would lead to local hotspots, ensuring uniform heat dissipation across all regions.
3Power
If cooling fluid channels are made longer to increase contact area, then heat dissipation capacity is improved, but fluid circulation stability deteriorates
Solution Approach 1:
The cooling fluid channels are segmented into multiple sections with different lengths and positions. Some channels are longer to maximize heat exchange contact area, while others are shorter to maintain circulation stability. This segmented approach allows the system to achieve high heat dissipation capacity without compromising fluid circulation stability.
Solution Approach 2:
The channel parameters (length, position, cross-section) are optimized based on local requirements. Channels in different regions have different lengths and configurations, allowing the system to maximize heat dissipation where needed while maintaining overall circulation stability through parameter variation rather than uniform channel design.
4Productivity
If thermal spreaders sustain high internal pressures for automatic cooling fluid return, then heat dissipation cycle efficiency is improved, but adverse conditions such as high evaporation and low water level occur
Solution Approach 1:
The partition wall creates pressure equilibrium between the steam generation region and water inlet region, eliminating the need for high internal pressures to drive cooling fluid circulation. This pressure balancing maintains heat dissipation cycle efficiency while preventing adverse conditions like high evaporation and low water level that would reduce service life.
Solution Approach 2:
The cooling fluid circulation is driven by natural convection and pressure differences created by the phase change process itself, rather than requiring high internal pressures. The system self-regulates the circulation, maintaining efficiency while avoiding the adverse conditions associated with high-pressure operation.
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 evaporator structure promotes uniform heat dissipation and stable operation by ensuring uniform fluid circulation and pressure, preventing local hotspots and extending the service life of heat generation devices.
Implementation Method 1
an alternative technique based on cooling fluids for air-liquid conversion and heat dissipation includes two groups of thermal spreaders with two sets of pipelines interconnected. One group of thermal spreaders are used in evaporation and removal of absorbed heat
Implementation Method 2
the other group of thermal spreaders are applicable in condensing/cooling hot air and returning cooling fluids for the heat dissipation cycle
Implementation Method 3
a heat exchange component, which is divided into a steam region and an inflow water region and comprises a partition wall between the steam region and the inflow water region
Data Source
AI summary
An evaporator structure with improved layout of cooling fluid channels includes a heat exchange component, a thermal conductive shell and a top cap. The heat exchange component is accommodated in the thermal conductive shell; the top cap mounted on the thermal conductive shell encloses the heat exchange component; the heat exchange component includes a plurality of transverse channels thereon, two first lengthwise cooling fluid channels near two side edges at the bottom respectively and a plurality of minor second lengthwise cooling fluid channels near the center. When the thermal conductive shell is heated, cooling fluids flowing to first lengthwise cooling fluid channels at both sides through transverse channels are guided into second lengthwise cooling fluid channels via the first lengthwise cooling fluid channels and the transverse channels and distributed throughout heat sources uniformly for full-area heat dissipation.