Currently

increasingly serious haze pollution impairs power transmission and transformation equipment external insulation.In order to study the effect

we design a set of haze and fog simulation device based on airflow crushing system in the artificial climate chamber.The artificial climate chamber is 27.5 m high

has a diameter of 25 m

volume of 15 000 m

3

which can provide an open atmospheric environment for simulating haze and fog.The simulation device is composed of two parts.One is a hot fog system in the artificial climate chamber that can produces fog

the temperature and humidity of which can be controlled;The fog can produce an inversion layer for the simulation of haze

under that circumstances the haz

e can keep stable.Another is airflow crushing system that can produce haze particles and spray the haze into the climate chamber

the particle size of the haze particles is less than 10μm and its composition is controllable.Mixing the haze and fog produced by the device can simulate the haze and fog weather

and the weather can evenly spread and persist in the artificial climate chamber.The concentration of the haze

the aerosol size distribution

temperature

and relative humidity of the haze and fog all can match the actual haze.The fog-haze condition with the particulate matter concentration of 200

6

00 μg/m

3

the mainly particle size of 0.25

2

μm

the relative humidity of 80%

9

0% has successfully been simulated.The test results show that the device can generate steady fog and haze

and provide conditions for studying physical and chemical properties of fog and haze and the external insulation of insulator in fog and haze weather.The research and design of the device create an effective method for the formation of haze and fog systematically.