Heat-Exchanging Plate Inlet Geometry for 3D Turbulent Flow
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Solution Overview
Problem
Conventional dimple heat exchangers have limited turbulence intensity due to 2-dimensional fluid flow, making it difficult to regulate pressure drop, heat exchanging performance, and volume effectively.
Innovation Solution
The heat exchanging plate features adjustable inlets and outlets with varying cross-sections and transitional curved surfaces, allowing for 3-dimensional fluid flow and adjustable parameters like Ha and Hb to enhance turbulence and fluid distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional dimple heat exchanging plate is used with 2-dimensional fluid flow, then the structure is simple, but the turbulence intensity is limited and heat exchanging performance is insufficient
Solution Approach 1:
The patent introduces a third dimension to the fluid flow by creating asymmetric inlet/outlet cross-sections and varying depths of depressions and protrusions. This transforms the conventional 2-dimensional flow into a 3-dimensional flow pattern, significantly increasing turbulence intensity and heat exchanging performance while maintaining the basic plate structure
Solution Approach 2:
The patent applies local quality by making different regions of the heat exchanging plate have different characteristics - specifically, different inlet/outlet cross-sections and varying depths of depressions and protrusions in different areas. This allows optimization of fluid distribution and turbulence generation in specific regions without changing the overall plate structure
2Adaptability or versatility
If the inlet and outlet cross-sections are made adjustable with varying depths, then the heat exchanging performance and pressure drop can be regulated, but the manufacturing complexity increases
Solution Approach 1:
The patent employs parameter changes by varying the depths of depressions and protrusions (Ha and Hb parameters) and the cross-sectional dimensions of inlets and outlets. These parameter variations allow regulation of heat exchanging performance and pressure drop while still using standard plate manufacturing processes
Solution Approach 2:
The patent adds depth variation as a new dimension to the conventional plate design. By creating depressions and protrusions with different depths (Ha and Hb) and asymmetric cross-sections, the design achieves adjustability in heat exchanging performance without requiring complex assembly or multiple components
3Productivity
If the transitional curved surface between adjacent depressions and protrusions is restricted, then the fluid distribution is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses curved transitional surfaces between depressions and protrusions to improve fluid distribution. The curved geometry naturally guides fluid flow and enhances mixing, while the specific curvature parameters are optimized to balance performance improvement with manufacturing feasibility
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 design improves heat exchanging efficiency by promoting fluid turbulence, optimizing pressure drop, and volume while maintaining the layout and welding spot profile unchanged, thus enhancing overall performance.
Implementation Method 1
increasing the turbulence intensity to enhance heat exchanging
Implementation Method 2
heat exchanging plate comprises depressions and/or protrusions
Data Source
Figure 1~2
Figure 3a~4
Figure 5a~6
AI summary
A heat-exchanging plate (20), and a plate heat exchanger (100) using same. The heat-exchanging plate (20) comprises concave locations (22) and/or convex locations (23), and is provided with multiple heat-exchanging units thereon. At least one inlet and/or at least one outlet of at least one of the heat-exchanging units is controllable.