Rotated Wire-Mesh Porous Stack for Heat Transfer With Low Pressure Loss
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Solution Overview
Problem
Existing heat exchangers using wire mesh laminated porous materials face challenges in achieving high heat transfer capability while minimizing pressure loss, as the arrangement of wire meshes can lead to excessive frictional resistance or inadequate heat exchange due to position deviations.
Innovation Solution
The wire meshes are laminated with intervals and rotated relative to each other, with a projection area of wire mesh lines occupying 85% or more of the orthogonal projection surface, and aperture openings between 1.2 mm and 1.5 mm, ensuring efficient fluid collision and heat exchange while suppressing pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wire meshes are laminated with large gaps between them, then pressure loss of fluid flow is reduced, but heat transfer capability deteriorates
Solution Approach 1:
The patent optimizes the aperture opening size parameter to a specific range (1.0mm to 2.0mm) to achieve the best balance between pressure loss and heat transfer capability. This parameter optimization allows the wire mesh to provide sufficient flow passage while maintaining adequate surface area for heat exchange, resolving the contradiction between low pressure loss and high heat transfer capability
Solution Approach 2:
The patent creates a composite structure by laminating multiple wire meshes with different aperture sizes and wire diameters. This composite arrangement allows different layers to contribute differently to flow guidance and heat exchange, achieving both low pressure loss and high heat transfer capability through the synergistic effect of the composite structure
2Temperature
If wire meshes are laminated with small gaps between them, then heat transfer capability is improved, but pressure loss of fluid flow increases
Solution Approach 1:
The patent optimizes the aperture opening size parameter to a specific range (1.0mm to 2.0mm) to achieve the best balance between pressure loss and heat transfer capability. This parameter optimization allows the wire mesh to provide sufficient flow passage while maintaining adequate surface area for heat exchange, resolving the contradiction between low pressure loss and high heat transfer capability
Solution Approach 2:
The patent creates a composite structure by laminating multiple wire meshes with different aperture sizes and wire diameters. This composite arrangement allows different layers to contribute differently to flow guidance and heat exchange, achieving both low pressure loss and high heat transfer capability through the synergistic effect of the composite structure
3Ease of manufacture
If wire meshes are laminated without controlled arrangement, then manufacturing is simplified, but heat exchange performance becomes inconsistent due to position deviation
Solution Approach 1:
The patent specifies different local properties for different parts of the wire mesh structure: aperture opening size (1.0mm to 2.0mm), wire diameter (0.5mm to 1.5mm), and lamination interval (0.5mm to 2.0mm). These localized quality specifications ensure consistent heat exchange performance across the entire structure while maintaining manufacturability through clear design guidelines
Solution Approach 2:
The patent optimizes the aperture opening size parameter to a specific range (1.0mm to 2.0mm) to achieve the best balance between pressure loss and heat transfer capability. This parameter optimization allows the wire mesh to provide sufficient flow passage while maintaining adequate surface area for heat exchange, resolving the contradiction between low pressure loss and high heat transfer capability
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
This configuration enhances thermal performance by ensuring high heat exchange with minimal pressure loss, facilitating uniform fluid flow and reducing the size and weight of the material.
Implementation Method 1
heat resistance of a bonding part can be reduced by sufficient adherence by diffusion bonding by pressurization
Implementation Method 2
a high heat transfer capability can be expected by excellent heat exchange with wire mesh lines of the wire mesh when a working gas passes through
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A plurality of wire meshes (21, 21) are laminated with an interval in between, and the wire meshes (21, 21) adjacent to each other in a lamination direction are relatively rotated and laminated, when wire mesh lines of the wire meshes laminated (21 are projected onto a projection surface orthogonal to the lamination direction, a proportion of a projection area of the wire mesh lines of the wire meshes 21 occupying the projection surface is 85% or more, and an opening lengths of apertures of the wire mesh are set in a range of 1.2 mm or more and 1.5 mm or less.