GD-Type Hybrid Minimal Surface Heat Exchanger
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Solution Overview
Problem
Existing heat exchangers in the aviation field have a low heat exchange capacity due to insufficient disturbance, which limits their ability to efficiently remove or recycle waste heat.
Innovation Solution
A heat exchanger based on a GD-type hybrid minimal surface-based disturbance structure is designed, which incorporates a GD-type hybrid minimal surface into the hot fluid channel to increase disturbance, heat transfer area, and vortex generation, thereby enhancing convective heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional disturbance structures (rectangular fins, serrated fins, herringbone wavy fins) are used, then the structure is simple to fabricate and highly compatible with conventional heat exchangers, but the heat exchange capacity is low due to insufficient disturbance
Solution Approach 1:
The patent combines G-type minimal surface and D-type minimal surface into a hybrid GD-type structure. This composite approach integrates the advantages of both minimal surface types to create a disturbance structure that generates more vortexes and enhances heat transfer efficiency while maintaining manufacturing feasibility through established 3D printing technologies
Solution Approach 2:
The patent optimizes key parameters of the GD-type hybrid minimal surface including porosity (40-80%), lattice size (5-20mm), and structural thickness (5-15mm). By adjusting these parameters, the disturbance effect and heat transfer area are optimized to maximize heat exchange capacity while considering manufacturing constraints
2Productivity
If a more complex structure is designed to increase heat exchange capacity, then the heat transfer area and disturbance effect are improved, but the manufacturing complexity and fabrication difficulty increase
Solution Approach 1:
The patent employs porous GD-type hybrid minimal surface structures with controlled porosity ratios (40-80%). The porous architecture increases the heat transfer area and enhances fluid disturbance without requiring excessively complex external geometries. The regular lattice-based porous structure can be efficiently manufactured using 3D printing technologies
Solution Approach 2:
The patent utilizes the inherent curved minimal surface geometry of both G-type and D-type surfaces. The curved, continuous surfaces create effective fluid disturbance and vortex generation while maintaining structural integrity. The mathematical definitions of minimal surfaces provide elegant curved geometries that are more manufacturable than arbitrary complex shapes
3Temperature
If G-type minimal surface is used as disturbance structure, then good thermal properties are achieved, but there is no sufficient vortex generation and disturbance effect compared to hybrid GD-type structure
Solution Approach 1:
The patent merges G-type minimal surface and D-type minimal surface into a hybrid GD-type structure. The G-type component provides baseline thermal performance and structural stability, while the D-type component contributes enhanced vortex generation capability. The hybrid structure achieves synergistic effects that surpass the performance of either minimal surface type alone
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 GD-type hybrid minimal surface-based disturbance structure significantly increases the heat transfer area and improves heat transfer efficiency, achieving a higher Nusselt number compared to conventional G-type minimal surfaces, making it suitable for efficient waste heat recovery and fuel preheating in aviation aircraft.
Implementation Method 1
When the fluid flows through the disturbance structure, the disturbance is increased, the heat transfer area is increased, and more vortexes are generated, thereby enhancing the convective heat transfer effect
Implementation Method 2
more vortexes are generated, thereby enhancing the convective heat transfer effect
Data Source
AI summary
The present disclosure belongs to the technical field of heat exchangers, and provides a heat exchanger based on a Gyroid/Diamond (GD-type) hybrid minimal surface-based disturbance structure. The heat exchanger includes a core, headers, and flanges. The core includes a cold fluid channel and a hot fluid channel, the cold fluid channel and the hot fluid channel are separated by a parting sheet. An inlet and an outlet of the cold fluid channel are separated from an inlet and an outlet of the hot fluid channel by sealing bars. A GD-type hybrid minimal surface-based disturbance structure is inserted into the hot fluid channel. A cold fluid and a hot fluid are distributed in a cross-flow manner.