Arcwing Guidance Unit Geometry for Urban Heat Transfer
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Solution Overview
Problem
The urban heat island effect leads to increased temperatures in city centers, causing discomfort and health risks due to heat stroke, and is predicted to worsen with more frequent and prolonged heat waves.
Innovation Solution
A guidance unit (MK-1) and an arcwing circulating power guidance system that transfers heat from city centers to suburbs using a network of pipes with varying diameters and angles, creating a pressure gradient to drive airflow and alleviate urban heat island effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a pipe system with varying diameters and angles is used to transfer heat, then heat transfer efficiency is improved, but device complexity increases
Solution Approach 1:
The pipe system is divided into multiple segments with different diameters (first pipe part with larger diameter, second pipe part with smaller diameter) and angles (first angle, second angle). This segmentation creates pressure gradients that drive airflow and enhance heat transfer efficiency while managing the complexity through modular design
Solution Approach 2:
The system changes physical parameters along the pipe length, specifically varying the diameter and angle of pipe sections. This creates pressure differences that drive fluid flow and improve heat transfer from high-temperature urban areas to low-temperature suburban areas
2Temperature
If pipe diameter is reduced to increase pressure gradient, then heat transfer capability is improved, but flow space is reduced
Solution Approach 1:
The pipe system uses segmented diameter changes rather than uniform reduction. The first pipe part maintains larger diameter for adequate flow space, while the second pipe part reduces diameter to create pressure gradient, balancing both flow capacity and heat transfer capability
Solution Approach 2:
The system introduces angular orientation as an additional dimension to the pipe design. By varying the angle of pipe sections (first angle, second angle), the system enhances pressure gradient and heat transfer capability without solely relying on diameter reduction, thereby preserving adequate flow space
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 system effectively transfers heat from high-temperature city centers to lower-temperature suburbs, reducing discomfort and health risks associated with heat islands, while also providing a cooling mechanism for urban areas.
Implementation Method 1
an inner space diameter of the second pipe part is smaller than an inner space diameter of the first pipe part, causing a cross-sectional area of the second flow space in a direction perpendicular to the pipe axis of the second pipe part smaller than a cross-sectional area of the first flow space in a direction perpendicular to the pipe axis of the first pipe part; one end of the pipe axis of the second pipe part and one end of the pipe axis of the first pipe part are connected in series with each other and spaced apart from each other by a first angle, so that the second flow space and the first flow space communicate with each other in series; thereby, a pressure of an external fluid located in the second flow space is greater than a pressure of the external fluid located in the first flow space to cause the external fluid to flow continuously from the second flow space to the first flow space
Implementation Method 2
a guidance unit (MK-1) and an arcwing circulating power guidance system with the guidance unit (MK-1) capable of transferring the heat trapped in a city caused by the heat island effect from the city center with a higher temperature to a suburb with a relatively lower temperature
Data Source
AI summary
A guidance unit comprises a first pipe part and a second pipe part, an inner space diameter of the second pipe part is smaller than an inner space diameter of the first pipe part, causing a cross-sectional area of a second flow space perpendicular to a pipe axis of the second pipe part smaller than that of a first flow space perpendicular to a pipe axis of the first pipe part; one end of the pipe axis of the second pipe part and one end of the pipe axis of the first pipe part are connected in series with each other and spaced apart from each other by a first angle, so that the second flow space communicates with the first flow space; thereby, a pressure of an external fluid in the second flow space is greater than a pressure of the external fluid in the first flow space.