Angled Heat Exchanger Layout for Uniform Airflow Distribution
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Solution Overview
Problem
Conventional heat-exchange devices experience non-uniform wind speed distribution across their surfaces, leading to inefficient heat-exchange performance due to the influence of surrounding structures, resulting in low wind speed at lower portions and high wind resistance at upper portions.
Innovation Solution
A heat-exchange device with a wind-guide member, such as a V-shaped wind-guide plate, is used to guide wind uniformly across the surface of the heat exchangers, improving the distribution uniformity of wind speed and enhancing heat-exchange performance by connecting the first and second heat exchangers at a predetermined angle and optimizing the placement and shape of the wind-guide member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heat-exchange device is placed in a box with air flowing from bottom to top, then the heat-exchange device can perform heat-exchange function, but the wind speed is not distributed uniformly across the entire surface, resulting in low wind speed at bottom portions and high wind resistance at upper portions
Solution Approach 1:
The heat-exchange device is divided into multiple heat-exchange portions (first heat-exchange portion and second heat-exchange portion) arranged at different angles. The wind-guide member is also segmented with multiple guide surfaces that correspond to different heat-exchange portions, allowing independent wind guidance for each segment to achieve uniform wind speed distribution across the entire device surface.
Solution Approach 2:
A wind-guide member is introduced as an intermediary component between the air source and the heat-exchange device. This wind-guide member includes multiple guide surfaces that actively direct and distribute wind flow to different heat-exchange portions, mediating the non-uniform wind distribution problem by redirecting airflow to achieve uniform wind speed across all heat-exchange surfaces.
2Device complexity
If a conventional flat-plate heat-exchange device is used, then the structure is simple, but the heat-exchange performance is insufficient due to non-uniform wind speed distribution
Solution Approach 1:
The heat-exchange device employs a dynamic angle configuration where the first and second heat-exchange portions are arranged at different angles (first angle and second angle respectively) relative to the horizontal direction. This dynamic angular arrangement, combined with the wind-guide member's multiple guide surfaces, optimizes wind capture and distribution across different portions, significantly improving heat-exchange performance while maintaining reasonable structural complexity.
3Speed
If the wind-guide member is added to guide wind uniformly, then the wind speed distribution uniformity is improved, but the device complexity increases
Solution Approach 1:
The wind-guide member is designed with multiple guide surfaces that serve multiple functions simultaneously: guiding wind to the first heat-exchange portion, guiding wind to the second heat-exchange portion, and distributing wind uniformly across all heat-exchange surfaces. This multi-functional design achieves uniform wind speed distribution without requiring separate guide components for each heat-exchange portion, thereby limiting the increase in device complexity.
Solution Approach 2:
The wind-guide member is integrated with the heat-exchange device structure, combining the wind guidance function with the heat-exchange structure. The guide surfaces are positioned to correspond with different heat-exchange portions, merging the wind guidance and heat exchange functions into a unified structure rather than separate components, thus reducing overall device complexity while achieving uniform wind distribution.
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 uniform wind speed distribution across the heat-exchange device surface significantly improves heat-exchange efficiency by reducing 'dead regions' and enhancing overall performance, as demonstrated by the comparison of wind speed curves before and after implementing the wind-guide member.
Implementation Method 1
a wind-guide member is disposed between the first heat exchanger and second heat exchanger for guiding wind toward the first heat exchanger and second heat exchanger
Implementation Method 2
wind flows upward from a lower surface of the heat-exchange device and exchanges heat with a refrigerant in the heat-exchange tubes when passing through the first and second heat-exchanger portions
Data Source
AI summary
A heat-exchange device comprises a first heat exchanger defining an upper end and a lower end. A second heat exchanger defines an upper end connected to the upper end of the first heat exchanger and a lower end spaced apart from the lower end of the first heat exchanger in a substantially longitudinal direction such that a predetermined angle between the first heat exchanger and second heat exchanger is between about 0 and 180°. A wind-guide member is disposed between the first heat exchanger and second heat exchanger for guiding wind toward the first heat exchanger and second heat exchanger.