Multi-Core Heat Exchanger Layout for Lower Wind Resistance
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Solution Overview
Problem
Conventional heat exchangers face inefficiencies in wind resistance and pressure drop, which affect their performance, particularly when comparing different configurations and components within the same system.
Innovation Solution
The design incorporates a heat exchanger with multiple secondary cores and a second core, where the heat exchange tubes and fins are configured to reduce wind resistance by varying their cross-sectional areas, fin densities, and barrier plate placement, ensuring a lower wind resistance ratio between different components at the same incoming wind speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the heat exchanger uses multiple rows of heat exchanger cores with uniform fin density and tube cross-sectional area, then the manufacturing is simplified, but the wind resistance and pressure drop increase, reducing heat exchange efficiency
Solution Approach 1:
The patent applies local quality by varying the fin density and heat exchange tube cross-sectional area at different positions within the heat exchanger core. Specifically, the fin density decreases from the front to the rear of the core, and the heat exchange tube cross-sectional area increases along the airflow direction. This non-uniform distribution optimizes wind resistance and pressure drop characteristics, improving heat exchange efficiency while maintaining manufacturing feasibility through standardized component modules.
2Productivity
If the heat exchanger uses higher fin density and smaller tube cross-sectional area to increase heat exchange surface area, then heat exchange capability improves, but wind resistance and pressure drop increase significantly
Solution Approach 1:
The patent applies parameter changes by systematically varying the fin density and heat exchange tube cross-sectional area as continuous parameters along the airflow direction. The fin density is reduced from front to rear, while the tube cross-sectional area increases, creating an optimized gradient that balances heat exchange surface area with wind resistance characteristics, thereby improving overall heat exchange capability without excessive pressure drop.
3Ease of manufacture
If the heat exchanger uses uniform heat exchange tube cross-sectional area throughout, then the manufacturing and assembly are simplified, but the wind resistance distribution is suboptimal, reducing overall performance
Solution Approach 1:
The patent applies segmentation by dividing the heat exchanger core into multiple sections along the airflow direction, with each section having heat exchange tubes of different cross-sectional areas. This segmentation allows optimization of wind resistance characteristics in different regions while maintaining manufacturing simplicity through modular component design and standardized connection interfaces between sections.
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 heat exchanger performance by optimizing wind resistance and pressure drop across different components, improving overall efficiency and heat exchange capabilities.
Implementation Method 1
A heat exchanger comprises a header and heat exchange tubes. The heat exchanger may comprise multiple rows of heat exchanger cores.
Implementation Method 2
at the same incoming wind speed, the ratio of the wind resistance presented by the heat exchanger to air passing through the first heat exchanger core to the wind resistance presented by the heat exchanger to air passing through the second heat exchanger core
Data Source
AI summary
A heat exchanger having: a first heat exchanger core including a first sub-heat exchanger core and a second sub-heat exchanger core, wherein the first sub-heat exchanger core and the second sub-heat exchanger core includes heat exchange tubes, the heat exchange tubes of the first sub-heat exchanger core and the second sub-heat exchanger core are connected to each other, and orthographic projections of the first sub-heat exchanger core and the second sub-heat exchanger core on a plane where the second sub-heat exchanger core is located at least overlap partially; and a second heat exchanger core including a heat exchange tube, wherein the heat exchange tube of the second heat exchanger core is connected to the heat exchange tubes of the first sub-heat exchanger core and the second sub-heat exchanger core is disclosed. At the same incoming wind speed, the ratio of the wind resistance of the heat exchanger to the air passing through the first heat exchanger core to the wind resistance of the heat exchanger to the air passing through the second heat exchanger core is less than a predetermined value. By using the heat exchanger according to the present invention, the performance of the heat exchanger can be improved.