Introduction:
 
This is a large-sized integrated hydraulic and water resources environmental laboratory, comprising the following 15 subsystems:
① Low pressure chamber system ② Cryogenic simulation system ③ High-temperature simulation system ④ Humidity simulation system ⑤ Low pressure simulation system (altitude) simulation system ⑥ Solar radiation simulation system ⑦ Rainfall simulation system ⑧ Snowfall simulation system ⑨ Water supply and treatment system ⑩ Test item performance measurement system ⑪ Environmental simulation facility measurement and control system ⑫ Environmental simulation facility monitoring system ⑬ Data center ⑭ Power supply (power, signal) system ⑮ Auxiliary system
 
 
Design Parameters
 
This laboratory employs a large-sized low pressure chamber capable of simulating and reproducing seven natural environmental conditions: temperature, humidity, high altitude (low pressure), solar radiation, wind exposure, rainfall, and snowfall.It can also achieve coupled operating conditions of different natural environments.Specific technical specifications are as follows:
 
1) Lab module system: Internal experimental space dimensions are 30×30×30 m (length×width×height), with external dimensions of φ40×40 m. A vertical cylindrical vacuum chamber is adopted. The chamber head features an electrically operated opening mechanism for handling large experimental components. Transport rails are installed within the chamber.
2) Temperature range: -60°C to 60°C. A fully perforated top panel is utilized for air distribution. The cooling source employs a cascade water-cooled chiller unit. The chamber incorporates a heat sink-type radiant cooling plate and a circulating air system, achieving temperature control through radiation and dual-temperature air distribution.
3) Humidity Range: 10–95%, enabling simulation of varying natural environments including high-temperature arid conditions, tropical high humidity, and low pressure arid conditions; air dew point as low as -80°C.
4) Pressure Range: H=0~6000m (101.3kPa~40kPa), employing multiple large-sized parallel water ring pumps.
5) Solar Radiation: Solar radiation simulation is achieved by installing a full-area, full-spectrum radiation lamp rack on the top of the lab module. The radiation area of 30×30m covers the entire experimental space. The lamp rack employs an adjustable suspension system to regulate radiation distance, with a maximum light intensity of 1000W/m². Radiation intensity is adjusted through methods such as regulating the power of full-spectrum lamps, installing shading panels, and installing polarizers.
6) Wind Velocity: The side walls of the lab module employ a fan array configuration to achieve a wind velocity of 0.5–30 m/s across a coverage area of 30 × 10 m (width × height). Wind velocity regulation is accomplished through selective activation/deactivation and variable-frequency control of the fan array. A dedicated supply duct is designed, incorporating a flow-straightening system composed of honeycomb devices and damping screens to meet the design requirement of wind velocity uniformity ≤ 0.2 m/s.
7) Rainfall: A rainfall function with adjustable intensity ranging from 0 to 300 mm/h is achieved by installing full-area rain gutters and single-phase flow nozzles on the top of the lab module. The raindrop diameter can be adjusted across the full spectrum from 0 to 5 mm by replacing nozzles and regulating water pressure. The rainfall area of 30 × 30 m covers the entire experimental space.
8) Snowfall: A full-area snowfall pipe and air-water mixture nozzles installed on the top of the lab module enable adjustable snowfall intensity ranging from 1 to 10 mm/h. The intensity is regulated by adjusting the air-water pressure and flow rate, as well as by replacing nozzle types. The snowfall area of 30×30 m covers the entire experimental space.
9) Experimental coupling functions: Based on hydraulic and water resources research, the chamber enables wind-snow coupling, wind-rain coupling, and wind-rain-snow coupling. Additionally, the chamber supports dual-function coupling such as wind radiation and low pressure radiation, as well as multi-parameter coupling including high/low temperature wind blowing radiation and low pressure wind blowing radiation.
 
(All parameters above can be customized to meet specific user requirements.)