Moldable Thermally Conductive Polymer Composite Heat Exchanger
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Solution Overview
Problem
Conventional heat exchangers, particularly those using metallic materials, are not suitable for low Global Warming Potential (GWP) refrigerants due to size and pressure drop constraints, and they are heavy, making them unsuitable for transport and aerospace applications. Additionally, metallic heat exchangers are limited in shape and have low thermal conductivity, which affects their efficiency in heat transfer.
Innovation Solution
A heat exchanger made from a polymer composite material with a filler content between 50% and 95% by weight, where the filler particles are no larger than 500 micrometers, providing thermal conductivity of at least 20 W/mK in one direction, allowing for lightweight, moldable, and thermally conductive components that can be shaped for specific heat transfer needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If metallic materials are used for heat exchangers, then thermal conductivity is improved, but weight increases
Solution Approach 1:
The patent uses polymer composite materials containing thermally conductive fillers (such as metal particles, ceramic particles, or carbon-based materials) to create heat exchanger components that combine the low weight of polymers with the high thermal conductivity of metallic or ceramic fillers, thereby resolving the contradiction between weight reduction and thermal conductivity enhancement
2Weight of moving object
If polymer materials are used for heat exchangers, then weight is reduced, but thermal conductivity decreases
Solution Approach 1:
The patent employs polymer composites with thermally conductive fillers to overcome the inherent low thermal conductivity of pure polymers, maintaining the weight advantage while achieving sufficient thermal conductivity for heat exchanger applications
3Strength
If metallic heat exchangers are used, then structural strength is improved, but adaptability in shape is reduced
Solution Approach 1:
The patent utilizes the molding capabilities of polymer composite materials to create heat exchanger components with complex geometries and customized shapes that would be difficult or expensive to manufacture using traditional metallic materials, thereby improving shape adaptability while maintaining structural integrity through optimized composite formulation
4Ease of manufacture
If conventional heat exchanger designs are used, then manufacturing simplicity is maintained, but heat transfer efficiency is reduced
Solution Approach 1:
The patent uses polymer composite materials with enhanced thermal conductivity to manufacture heat exchanger components using conventional molding processes, achieving improved heat transfer efficiency without sacrificing manufacturing simplicity or increasing production complexity
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 polymer composite heat exchanger achieves higher thermal conductivity compared to traditional materials, is lightweight, corrosion-resistant, and can be molded into complex shapes, enhancing heat transfer efficiency while being suitable for various HVAC and aerospace applications.
Implementation Method 1
the thermal conductivity of each of the plurality of middle plates is at least 20 W/mK in one direction
Data Source
AI summary
A method of making a heat exchanger with a net shape moldable highly thermally conductive polymer composite includes mixing a polymer and a thermally conductive filler material and molding the polymer composite into heat exchanger components. The heat exchanger can be tailored to varying heating and cooling needs with moldable geometries.