Composite Heat Absorption Device with Multi-Temperature Phase Change Cells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing heat absorption devices are inadequate for managing non-uniform hot sources with components having different operating temperature ranges, as they are primarily designed for uniform thermal sources and struggle with transient high heat flows in compact electronic devices.
Innovation Solution
A heat absorption device featuring a network of cells filled with a first phase change material and passages filled with a second phase change material, both distributed in a plane parallel to the hot source, allowing for thermal management of components with different operating temperatures through phase change enthalpy at multiple temperatures, with carbon nanotubes providing enhanced thermal conductivity and mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single phase change material is used in heat absorption devices, then the device structure is simple, but it cannot effectively manage non-uniform hot sources with different operating temperature ranges
Solution Approach 1:
The device is segmented into multiple cells, each containing a different phase change material with specific melting temperatures. This segmentation allows each cell to target specific temperature ranges of different electronic components, enabling effective thermal management of non-uniform hot sources while maintaining a modular and organized structure.
Solution Approach 2:
Different regions of the device are assigned different phase change materials based on the thermal requirements of underlying electronic components. Each cell's phase change material is selected to match the operating temperature range of the specific component it serves, creating local thermal optimization throughout the device structure.
2Adaptability or versatility
If multiple phase change materials are used to manage different temperature ranges, then thermal management effectiveness is improved, but the device structure becomes more complex
Solution Approach 1:
The device employs a nested structure where cells containing phase change materials are arranged in a network with interconnecting passages. The passages are positioned between cells, creating a compact nested arrangement that integrates multiple functional elements (cells and passages) into a unified structure, reducing overall device complexity despite incorporating multiple phase change materials.
Solution Approach 2:
Multiple cells containing different phase change materials are merged into a single integrated device structure with shared passages and common support framework. This merging approach allows the device to manage multiple temperature ranges simultaneously while avoiding the need for separate independent thermal management systems for each component.
3Quantity of substance
If phase change materials are used for transient heat absorption, then significant heat quantities can be stored, but the device may not respond quickly enough to rapid heat flows
Solution Approach 1:
The device utilizes phase transitions of multiple phase change materials with different melting temperatures to absorb transient heat loads. When electronic components generate sudden heat, the corresponding phase change material undergoes phase transition, rapidly absorbing large quantities of heat energy and preventing temperature spikes, thus providing both high heat storage capacity and fast response to transient thermal conditions.
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 device effectively manages heat dissipation from non-uniform hot sources by utilizing phase change materials with different melting temperatures, achieving better thermal clipping and mechanical strength, thereby reducing maximum temperature values and improving heat management in electronic devices with diverse heat dissipation profiles.
Implementation Method 1
A heat absorption device comprising cells containing a first solid/liquid phase change material, as well as a passage between cells containing a second solid/liquid phase change material, the first and the second phase change materials being distributed in a same plane parallel to a face of the heat absorption device intended to be placed in thermal contact with the hot source
Implementation Method 2
These materials make it possible to store significant quantities of heat on account of their phase transition, typically from a solid state to a liquid state
Implementation Method 3
the first and the second lateral walls are formed of carbon nanotubes. Thanks to their good thermal conductivity, the nanotubes ensure an evacuation of the heat in nominal regime by conduction
Data Source
AI summary
Production of a heat absorption device comprising a first face intended to be in contact with a hot source and a second face opposite to the first face, a network of cells filled with a first phase change material being arranged between the first face, a passage between cells being filled with at least one second phase change material different from the first phase change material.