Mathematical model to evaluate the performance prediction and influencing factors of solar chimney dust haze removal street light

To achieve the theoretical predictions of operational performance for a new type of solar chimney dust and haze removal streetlight, while optimizing the structural configuration of its chimney main flow passage, this paper is based on a physical model of the solar chimney dust and haze removal device. Energy transfer thermal balance equations and performance prediction mathematical models for the solar chimney dust and haze removal street light are established, exploring the impact of core parameters and optimizing structural configurations. The research results show that the established mathematical model is experimentally verified to be able to effectively predict the operating characteristics of the dust haze street light. The unpowered wind supercharged wheel enhances the upward effect of the chimney airflow, and the changes in the total height of the chimney, the width of the flow path and the chimney taper ratio have an important influence on the operating performance of the streetlight. By optimizing the design, the inlet airflow velocity increased by 56.2 %. The inlet flow velocity is positively correlated with solar irradiance and negatively correlated with ambient temperature and wind speed. When the solar irradiance decreased from 1000 W/m2 to 400 W/m2, or when the ambient temperature increased from 15 °C to 35 °C, or when the ambient wind speed increased from 0.5 m/s to 4.5 m/s, the inlet flow velocity decreased by 34.9 %, 5.0 %, and 16.3 %, respectively. These research results provide a theoretical basis and practical guidance for the design and optimization of solar chimney dust haze removal streetlights.