Hot-Humid Climate Wind Tunnel for Seven-Field Coupled Simulation
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Solution Overview
Problem
Existing environmental wind tunnels cannot simulate extreme hot-humid climates with high temperature, high humidity, high radiation, and high salt conditions, nor can they achieve dynamic coupling control of multiple environmental parameters, limiting their ability to study building materials under complex climate conditions.
Innovation Solution
A hot-humid climatic wind tunnel equipped with a fan, variable temperature and humidity devices, salt fog generator, sky background radiation board, solar radiation lamp array, and rain generator, along with a multi-field coupling control system that includes sensors and control units to dynamically adjust and control wind speed, temperature, humidity, solar radiation, sky effective temperature, rainfall, and salt fog concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing environmental wind tunnels are used, then basic wind tunnel testing can be performed, but they cannot simulate extreme hot-humid climates with high temperature, high humidity, high radiation, and high salt conditions
Solution Approach 1:
The patent integrates multiple environmental simulation systems (temperature control, humidity control, radiation simulation, salt fog generation, and rainfall systems) into a single wind tunnel platform. This merging of previously separate test facilities enables comprehensive extreme hot-humid climate simulation while sharing common infrastructure such as the wind tunnel body, control systems, and measurement equipment, thereby achieving enhanced adaptability without proportionally increasing overall system complexity.
Solution Approach 2:
The wind tunnel is designed with multi-functional capabilities to simulate various climate parameters simultaneously - temperature variation, humidity control, solar radiation, sky radiation, salt fog, and rainfall. This universal design allows a single facility to perform multiple environmental tests that previously required separate specialized facilities, significantly improving climate simulation versatility.
2Adaptability or versatility
If existing environmental wind tunnels are used, then partial simulation experiments can be conducted, but they cannot integrate multiple test sections into the same wind tunnel
Solution Approach 1:
The wind tunnel is divided into multiple functional test sections including a first test section for atmospheric boundary layer simulation and a second test section for hot climate simulation, each optimized for specific testing requirements. This segmentation allows different types of experiments to be conducted simultaneously in separate sections while maintaining a unified wind tunnel structure, enabling integrated multi-section testing without excessive structural complexity.
3Extent of automation
If existing environmental wind tunnels are used, then basic testing can be performed, but they cannot realize day-night periodic hourly adjustment and dynamic coupling control of multiple environmental parameters
Solution Approach 1:
The control system incorporates real-time feedback mechanisms that continuously monitor environmental parameters (temperature, humidity, radiation, wind speed) and automatically adjust the simulation systems to maintain target conditions. This feedback control enables dynamic coupling adjustment of multiple parameters and supports day-night periodic variations, achieving high-level automation through intelligent regulation rather than complex manual control.
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 wind tunnel can simulate complex outdoor climate conditions, enabling accurate testing of building materials under extreme salt-containing hot-humid environments and reducing the cost of establishing separate test facilities by integrating multiple test sections within the same tunnel.
Implementation Method 1
a sky background radiation board... The sky background radiation board includes heat conduction boards, stainless steel boards and copper tubes
Implementation Method 2
The sky background radiation board includes heat conduction boards, stainless steel boards and copper tubes. The plurality of heat conduction boards are divided into multiple rows and mounted on the stainless steel boards, and the S-shaped copper tubes are laid on each row of heat conduction boards
Implementation Method 3
a solar radiation lamp array... a hemispherical radiometer
Implementation Method 4
a fan... a wind speed sensor
Implementation Method 5
a variable temperature device... a temperature sensor
Implementation Method 6
a variable humidity device... a humidity sensor
Implementation Method 7
a salt fog generator... a salt fog concentration sensor
Data Source
AI summary
A hot-humid climatic wind tunnel and a multi-field coupling control system therefor. A fan (18), a variable temperature device, a variable humidity device, a salt fog generator (8), a sky background radiation board (11), a solar radiation lamp array (12) and a rain generator (13) are mounted in a wind tunnel body (29). A wind speed sensor, a temperature sensor, a humidity sensor, a salt fog concentration sensor, a background radiation temperature sensor, a hemispherical radiometer and a rain gauge are mounted in a test section; the sky background radiation board (11) is mounted on the top of the test section of the wind tunnel, and the solar radiation lamp array (12) and the rain generator (13) are mounted on the sky background radiation board (11); the sky background radiation board (11) comprises heat conduction boards (11-2), stainless steel boards (11-3) and copper tubes (11-1); and the plurality of heat conduction boards (11-2) are divided into multiple rows and mounted on the stainless steel boards (11-3), and the copper tubes (11-1) are laid on each row of heat conduction boards (11-2). The copper tubes (11-1) are connected to an external cold and hot water device. The present invention can achieve simulation of fields of seven parameters, i.e. wind speed, temperature, humidity, solar radiation illuminance, sky effective temperature, rainfall, and salt fog in outdoor natural climate.